- test-drb@ccmp.vtda.org - classiccmp.org

Mountain View - was UK VCF or equivalent

by Billy.Pettit＠wdc.com

Marvin Johnston writes: And that said, how many people will be attending this years VCF at the Computer History Museum in Mountain View? I have very much enjoyed being able to put faces with names, and it is a great social event as well as being educational! Since I have a great deal of stuff to sell, I plan on bringing as much as I can with me :). It will be *wonderful* when I get the workbenches cleared off and I have enough time and room to work with this stuff again. -------------------- I thought you were making progress with the TRW and Livermore swap meets. That's a couple of loads a month! Yes, I will be at Mountain View. And have already lined up a couple of people who want to see some of the old CDC machines I have. They are too heavy for the VCF, but can have visitors out to the house. Won't have much to sell. What is the VCF policy anyway? Can you do some dealing during the show? Or is it strictly show with the dealing outside or offline some where? If you can sell, what is the cost for a booth or table? Billy

19 years

1
0
0 0

A single-board Amiga 500 clone on an FPGA

by lproven＠gmail.com

The Minimig: http://home.hetnet.nl/~weeren001/minimig.html I've read about this before but it all appears to be working now. Impressive achievement, I feel. -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

19 years

6
5
0 0

8085 vs 8085A

by ajp166＠bellatlantic.net

> >Subject: Re: 8085 vs 8085A > From: "Steven Canning" <cannings at earthlink.net> > Date: Tue, 07 Aug 2007 01:11:07 -0700 > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > > >> Hi, >> >> I was looking through my collection yesterday and was testing out an old >> Intel SDK85 system. I noticed the main processor is stamped 8085, which >> means this chip is either an 8085 or the "A" was not printed properly and >> the chip is really an 8085A. >> >> I have a few 8085 systems and a box of 8085 CPUs. I checked them all and >> every one of them is an 8085A. I don't think I have ever seen an 8085, >> they've all been 8085A types. >> >> Other than the stamp on the chip, is there anyway I can tell the >difference >> between an 8085 and an 8085A? Furthermore, is the 8085 rare, and I should >> put the chip away, or is it nothing special? >> >> Why did Intel bring out the 8085A? Were there issues with the 8085? >> >> Seeyuzz >> River > > >There were multiple versions of 8085 microprocessors. The original version >of the 8085 microprocessor without suffix "A" was manufactured by Intel >only, and was very quickly replaced with 8085A containing bug fixes. A few >years after that, around 1980, Intel introduced 8085AH - HMOS version of >8085A. There was also 80C85A - CMOS version of the 8085A. It's not clear if >80C85 was ever manufactured by Intel or not, but it was produced by at least It was. Supposededly the 8085 was used to proto the intel CMOS process for the 80C48 and 80C188 and later parts. >two second source manufacturers - OKI and Tundra Semiconductor. Tundra >Semiconductor manufactured the fastest 8085 microprocessor running at 8 MHz. I have a few 8mhz intel 8085AH-2s (16mhz clock crystal) HMOSII, those are scarce but do exist. Intel did make the 8085AH (HMOSII) at 6mhz as well. >Second source manufacturers: AMD, Mitsubishi, NEC, OKI, Siemens, Toshiba. I have parts from all of them. I find the 8085 and Z80 to be good workhorse 8 bitters. Both enjoyed long sales lives. Allison >Best regards, Steven C. > >

19 years

3
2
0 0

8085 vs 8085A

by ajp166＠bellatlantic.net

> >Subject: 8085 vs 8085A > From: "river" <river at zip.com.au> > Date: Mon, 06 Aug 2007 20:48:21 +1000 > To: <cctalk at classiccmp.org> > >Hi, > >I was looking through my collection yesterday and was testing out an old >Intel SDK85 system. I noticed the main processor is stamped 8085, which >means this chip is either an 8085 or the "A" was not printed properly and >the chip is really an 8085A. > >I have a few 8085 systems and a box of 8085 CPUs. I checked them all and >every one of them is an 8085A. I don't think I have ever seen an 8085, >they've all been 8085A types. > >Other than the stamp on the chip, is there anyway I can tell the difference >between an 8085 and an 8085A? Furthermore, is the 8085 rare, and I should >put the chip away, or is it nothing special? 8085 (non A) is not rare but I have no data in my library for intel to suggest any differnce between the non-A and the A part. >Why did Intel bring out the 8085A? Were there issues with the 8085? 8085 was 1977 and the 8085A from what I have was soon before! Date codes suggest late 1977 (week 52 1977) for one 8085A. I suspect the differnces are processing only and they are interchangeable. I should note that I only have a few intel 8085s in ceramic and 8085As in both ceramic and plastic. So there may be insignificant process differnces. Also only the 8085A appears elsewhere (NEC, AMD) so the upgrade may be a license issue. Allison > >Seeyuzz >River >

19 years

2
1
0 0

Mystery tape drive

by aek＠bitsavers.org

> Can anyone here identify the tape drives in this picture? Ampex TM-2

19 years

3
3
0 0

UK retro show thoughts

by jfoust＠threedee.com

At 07:01 AM 8/9/2007, Liam Proven wrote: >I've tried to make a couple of points which seem to have sunk unnoticed. >While you're all happily arguing about the comparative virtues of >various models of generator, I have pointed out that there are already >very large-scale computer shows happening in the UK on a regular >basis: the commercial LAN parties. Yes, you're right - classic computers can tag along at many sorts of events. I recently attended the Midwest Gaming Classic: http://www.midwestgamingclassic.com/ Most of the place was jammed with delightful old pinball and stand-up arcade machines, and exhibitors selling parts to rebuild the same, but they also had a side event with a display of many 70s and 80s PCs and gaming consoles. It was quite well done. There were many models I hadn't seen in person before. Some were running, some under glass. The web site reminds me that at least And both the young kids and the old-timers seemed to be enjoying that part of the exhibit. (I was baffled to see my own boys (9, 10, 12) to spend a half hour cheerfully playing Doom on a network of old G3 Macs.) It was held in several ballrooms of a hotel / conference center. Loading docks were available and apparently they handled the power concerns. For the non-USAians, Oconomowoc (pop. 12,000, my old home town) is about 30 minutes from Milwaukee (pop. ~1.7M region) in the Midwest. Exhibitors and attendees drew from Chicago as well, roughly two hours away. Gaming is huge, and there's always a game or two you can run on a classic machine, so there's historical overlap and I'm sure the gamers would be very receptive. Retro is cool and you guys are holding the keys. - John

19 years

1
0
0 0

UK VCF or equivalent

by RodSmallwood＠mail.ediconsulting.co.uk

This is getting boring! American law stops at the twelve mile limit anyway. Unless somebody has a trademark registered in the UK then this whole thing is nonsense. If somebody wants to organize shall we say an 'Elderly Electronics Expo' in the UK then good. Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Liam Proven Sent: 09 August 2007 12:47 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: UK VCF or equivalent On 07/08/07, Gordon JC Pearce <gordon at gjcp.net> wrote: > On Mon, 2007-08-06 at 16:28 -0700, Sellam Ismail wrote: > > Incidentally: > > > *IF* you put on an event of your own and choose to call it the > > "Vintage Computer Festival", *THEN* I will bury your event. Do what > > you like, but find your own name. > > This is why I wouldn't call it VCF or have anything to do with the US > VCFs in any case. The mere fact that someone has enough ego to go > "It's > *MY* name and if you use it I'll *crush* you, muahahahaha" puts me off > any further involvement. Actually, you have my pretty much complete agreement on that point. Saying "look, it's my name, I run a business, please talk to me about using it", fine, no problem. Saying "it's mine, you want to steal it, I will hunt you down" - well, that bespeaks some very poor things about the person making the statement. -- Liam Proven * Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk * GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 * Cell: +44 7939-087884 * Fax: + 44 870-9151419 AOL/AIM/iChat: liamproven at aol.com * MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk * Skype: liamproven * ICQ: 73187508

19 years

1
0
0 0

Looking for manual for IME 86s desktop calculator

by derschjo＠msu.edu

Hi all -- My dad's had an IME 86s calculator in his office for years, since he rescued it from his school's surplus sale a dozen years back. Cool old desktop unit: 16 nixie tubes for the display, and a square root function! :) He's interested in finding a copy of the manual for it -- anyone out there have a lead? Thanks in advance... Josh

19 years

2
1
0 0

UK VCF or equivalent

by sellam＠vintagetech.com

Ok, back again to clear up some misperceptions. 1) Yes, I am subscribed to the list, but I have message delivery turned off. I still just don't have time to plow through the dozens of messages a day this list generates. I really would like to re-join the discussion as a regular but time prevents this. 2) I do scan the archives regularly to see what people are discussing. >From time to time I chime in. Invariably, someone (willfully or otherwise) misinterprets what I say, and chaos ensues. Sigh. 3) Gordon Pearce: > I would call it something completely different if I was going to run > one. If people are going to get all precious about their valuable > trademarks then sod 'em. I'm not getting "precious". I've put a lot of time, energy and MONEY into developing the Vintage Computer Festival. If someone wants to put on an event that celebrates vintage computers, fine! More power to you!!! Just don't use the name "Vintage Computer Festival" unless it's actually organized under the tutelage of the VCF. *IF* you put on an event of your own and choose to call it the "Vintage Computer Festival", *THEN* I will bury your event. Do what you like, but find your own name. > Sellam, if you're so enthusiastic as to set up a "rival" VCF to spite > someone setting up a VCF-a-like, why not just set up a VCF in the UK? I would love to, Gordon. Perhaps you'd like to offer to be the local coordinator? As I've said numerous times previously (why do some people seem to miss this part?) I am always happy to expand the VCF to locations throughout the world, where ever there is enough interest to have an event where enough people will attend to justify the enormous commitment of time and money that is involved. I will share with you my hard won experience and secrets in pulling off a successful event, share my large list of contacts to help book speakers, help attract and organize exhibitors and vendors, get the word out through the VCF mailing list, help with advertising, and even help with financing. 4) Jules Richardson: > I suspect a lot of people will underestimate the time, money and effort > needed to organise and promote something like this. Anything making that > a little easier seems invaluable. Indeed. Between the first two events I lost something like US$5,000. Aside from some occasional monetary sponsorship throughout the years (totalling maybe US$3,000) the event is completely financed by me and/or the local coordinators. The key is to find a venue sponsor: i.e. someone that would be willing to give you a space to hold the event for free or for very cheap. Otherwise, the admission you have to charge regular attendees and the fees you would have to charge exhibitors and vendors would be too high. Even in the early days I didn't believe charging too much for admission because I want as many people to attend as possible. Admission to the VCF has always been cheap (I think the most ever charged was $15 per person per day). The matter of TIME is the bigger expense. People don't realize how many little things need to get done, and how all those little things add up to hours and days and sometimes weeks of time. As an aside, I've had numerous discussions with Jules and Adrian Graham over the years regarding a VCF UK, but so far the stars have not aligned properly due to various issues and constraints (usually those dealing with TIME). All it takes is one person to say, "I will do it". Once that happens, the ball starts rolling: a date is selected, an announcement is made, and then it's just a matter of filling the blanks. So, again, if anyone is interested, just say the magic phrase ;) -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years

9
9
0 0

Trivia

by wbblair3＠yahoo.com

According to a book I just read, the model of the fuse used on the German WWII V-1 Flying Bombs was the "Z80A." ____________________________________________________________________________________ Got a little couch potato? Check out fun summer activities for kids. http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&…

19 years

2
1
0 0

Looking for S-100 board documentation

by lynch610＠sbcglobal.net

Hi, I am restoring some S-100 boards and am looking for documentation. Specifically, for these S-100 boards: Bob Mullen TB-1 (bus extender with logic probe) Morrow's Microstuff MMSP2 (serial/parallel ports) Measurement Systems and Controls Inc, Model DMB-6400 (64K DRAM) Matrox ALT 512-AS (video graphics) VectorGraphics Flash-Writer (video text, *not* the Flash-Writer II) If anyone has documentation, especially schematics, for any or all of the above, please contact me. I think Herb as one of them which I will be ordering soon but the rest appear to be unavailable on the internet as best I can tell. I am able to scan documentation so if you have paper copies and could either make a copy or send me the original and I will return it as you request. I will pay for shipping, handling fees, as appropriate etc. Your help is much appreciated. Thank you in advance. Andrew Lynch PS, I posted this on comp.os.cpm but no responses yet. I will send any copies I get to the usual S-100 archives assuming I get sender's permission to do so.

19 years

1
0
0 0

UK Classic Computer event (Was VCF UK)

by roger.holmes＠microspot.co.uk

> > If Bletchley Park might be able to do a VCF in two or three years >> time, maybe we could do something much simpler in the mean time, >> without using the VCF name. Just a get together of anyone in the UK >> with an interest in old computers and hopefully a few who would want >> to exhibit theirs. Who would be interested and about how much space, >> if any would they want? > > > My thoughts were developing along the same lines, the key question > surely is > numbers. 7 replies so far from the UK. > How many do we think would attend, and could some core events be > lined up to to ensure a worthwhile experience? I'm thinking here of > the > datacentre visits that (I think) were run from VCF Europe last year I see. Probably the biggest concentration of these in the UK is still central London, though I'm out of touch with that side of things. > and the involvement of industry alumni that the US events have > enjoyed. Many of the real pioneers (who are still alive) are in the Computer Conservation Society. Maybe we could involve them, I am a member but I don't attend meetings (except one as a speaker). > It's not like we don't have a few home-grown pioneers - Clive > Sinclair and various Acorn people spring to mind. Ah, you're talking more modern pioneers, ones of the microprocessor era. Yes indeed. Alan Sugar's probably free now :-) Just kidding. Do we have any contacts or ideas on how to contact them? Isn't it Sir Clive now by the way, we don't want to put anyone's nose out of joint >from the first contact. Roger.

19 years

7
7
0 0

Classic-to-USB interface

by Hollandia＠ccountry.net

Does anyone make an interface card that will permit a "thumb drive" to be addressed by the classic machines? Some time ago, I had a sound card on my Packard-Bell 486SX20 machine. It plugged into the motherboard. There was no specific provision for it in the BIOS, but the CD-ROM connected to it acted like a "D" drive from Windows 3.1. I don't remember ever trying to access it from DOS, though. Perhaps, instead of being plugged into the motherboard, this interface could have the hard drive's ribbon cable plugged into it. Does anyone make such a beast?

19 years

11
12
0 0

Semi-OT: Interesting or unusual PC Compatibles?

by jbmcb1＠gmail.com

OK, branching off another thread. There probably aren't many, but there are a few clones that I'd consider "interesting." I'd say the PCjr counts, it was a pretty strange system - the unsuccessful IIgs of the PC world. Sidecar expansion slots, IR keyboard and cartridges... The last of the PS/2's had some strange designs. The 95 was really strange - a fold-out power supply design with a spring loaded plunger power supply connector. C2 level hardware, which meant if you forgot the BIOS password you're SOL. I'd count the whole MCA based PS/2 line as a string of oddities in the PC world. There were some really odd Japanese designs as well. My favorite is the FM Townes, which was a hybrid PC and game console. It ran a proprietary OS, but could run language-localized Windows. It also had an oddball graphics system that could overlay multiple screen modes over each other, so you could play full-motion video games with text overlay.

19 years

21
69
0 0

Help with PDP-11 Unibus Map Hardware / Software under RT-11

by bqt＠softjar.se

"Jerome H. Fine" <jhfinedp3k at compsys.to> skrev: > Hopefully, this request is clear enough to be understood. Both the > software and the hardware portion of the questions are independently > important, so please answer one aspect even if you can't help with > the other. > > Over the past 30 years of using PDP-11 software (RT-11 over 95%) > and hardware, I have never had occasion to use a Unibus system with > more than 256 KB of memory (such as a PDP-11/34). > > I would appreciate help in understanding the Unibus Map hardware which > (if I understand its purpose correctly) is to convert 18 bit addresses given > to a Unibus controller into 22 bit addresses for real physical memory for > systems like a PDP-11/84 and perform DMA from / to the hard drive. > > Also helpful would be an explanation of the related software used under > RT-11 along with exactly where the Unibus Map hardware is located > on a real DEC system (on the CPU board I presume) since the identical > CPU board is used for both the Qbus and the Unibus with both the > PDP-11/84 and the PDP-11/94. I can't answer how RT-11 do things, but I can explain the hardware side of it. First of all, the Unibus map is not in the CPU board of the 11/84 and 11/94. It's on the Unibus adapter. KT-whatever. The whole thing works in a rather simple way, actually. All Unibus devices do DMA to an 18-bit address. That can never change, so think of this 256 K of memory as a separate memory area, that don't correspond to your actual physical memory. It's all fake. Then divide this whole 256K into 32 equal sized pieces. That will give you 32 pieces of 8K memory ranges. The same as a page on a PDP-11, but that's not that relevant. :-) Now, when a device will do DMA, it will do DMA to one, or several of these 32 pages. So you'll have an 18-bit address, of which the high 5 bits tells you which "page" it will go to. The Unibus Map have 32 registers. One for each of these "pages". So the high 5 bits of the 18-bit DMA address will select a register in the Unibus map. The Unibus map will in turn give you a 16-bit value >from this. This will be the high 16 bits of a 22-bit memory address. The 13 low bits of the DMA address is added to this 22-bit address to give the final physical address to do DMA to. So, in essence, what a driver will do when a Unibus map is present, is to find some free Unibus map registers (free in the meaning that no other driver is using them, so you need to keep track of these, as a resource). Or you could statically allocate some map registers for your driver, if you prefer, and if all drivers combined don't need more than 31 map registers (I think that the last register might not be usable, but I'm not sure. It basically gives a mapping for what otherwise is the I/O page). Once a driver have decided which map register to use, that will decide what 18-bit address range to use for the DMA. So the 18-bit address is calculated >from the physical address truncated, and the address for the range covered by the map register. The map register is loaded with the corresponding physical address high bits, and then you fire the I/O. Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

19 years

1
0
0 0

IBM "Type 0667" ESDI disk information?

by RodSmallwood＠mail.ediconsulting.co.uk

I remember the Havant IBM Disk plant. I went on a visit there once. It was one enormous clean room. The drives they made had a name - something like Eagle, Sparrow or Wren Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Sridhar Ayengar Sent: 08 August 2007 04:05 To: On-Topic and Off-Topic Posts Subject: Re: IBM "Type 0667" ESDI disk information? jim wrote: > Sridhar Ayengar wrote: > >> Mr Ian Primus wrote: >> > Is there any country of origin on the 667? There was a division in > Havant that manufactured drives in this time frame, that IBM sold to > the plant managers, that is now Xyratex. If memory serves, those series were made in several different places, including California and Mexico. Probably one or two other places too. Peace... Sridhar

19 years

1
0
0 0

IBM "Type 0667" ESDI disk information?

by ian_primus＠yahoo.com

Well, I did some checking, and my one vax does _not_ have an Emulex ESDI controller - it's a Dilog. I downloaded the manual from Bitsavers. I'm going to start playing with it and see if I can get it to format some of these spare ESDI disks. One disk I have a couple of is this IBM drive. It's labeled as "P/N 90X8528 70MB ESDI", and on the side as "Type: 0667". Googleing has turned up little, although I found some info on cyls/heads/sectors. There is a block of dip switches on the drive, and it would be nice to figure out what they do... -Ian

19 years

5
10
0 0

Weird IBMs

by wdonzelli＠gmail.com

OK, folks, - IBM 580 and 581 tape units. Any ideas? From the description I received, they sound like they are 60s era. That is all I know. -- Will

19 years

8
21
0 0

IBM Card punch on ebay

by silent700＠gmail.com

Not mine, just spotted it in a search: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150149167422

19 years

1
0
0 0

dead nicd charger

by brad＠heeltoe.com

I'm going to risk the rath, but I just know someone on this list has delt with this. After replacing my Ryobi 14.4v nicd charger 2 times (yes 2), I discovered I have a dead battery and it's killing the charger(s). Apparently it can do this rather quickly, as I only left it on the charger for about an hour. (one web site says it only takes a matter of minutes - apparently the cheapo charger does not protect itself) So, ok. Since I have 2 dead ones I might as well try to fix it. It just as a simple circuit board with a rectifier, 4 devices, 3 leds and bunch of discretes. Q1 A1015 PNP transistor (2SA1015) Q2 2N3904 NPN transistor Q3 XL08 ST 40 .8A SCRS Q4 X0403DE ST SCR Anyone ever fix one? what fails? I'm going to guess the big to-225 style SCR failef, since I'll bet that modulates the current to the battery. -brad

19 years

1
0
0 0

What's a Heath controller board 85-2222-1

by tpeters＠mixcom.com

I have a Heath controller board, 85-2222-1. I think that's an RX01 or RX02 controller for DEC. I was using it with my Shugart 801. Anyone know what it actually is and if it has any value? -T ----- 205. [Philosophy] Life: a sexually transmitted disease that is fatal. --... ...-- -.. . -. ----. --.- --.- -... tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio) "HEY YOU" (loud shouting) WEB: http://www.mixweb.com/tpeters 43? 7' 17.2" N by 88? 6' 28.9" W, Elevation 815', Grid Square EN53wc WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531

19 years

1
0
0 0

[personal] cctalk Digest, Vol 48, Issue 14, message 11

by mike＠brickfieldspark.org

> Message: 11 > From: Adrian Burgess <classiccmp at discordance.org.uk> > Subject: Re: UK Classic Computer event (Was VCF UK) > To: "General Discussion: On-Topic and Off-Topic Posts" >> Can we have a quick poll to see who lives where? > > Half way between Nottingham and Lincoln. > UK, Aldershot, Hampshire Mike.

19 years

6
6
0 0

DOuble-stepping BBC drives

by ard＠p850ug1.demon.co.uk

I should know this, but I can't easily find the answer... I have a BBC B+ with (1770)DFS (V2.x)( and ADFS (V3.5x) (or at least I think those version numbers are right). It is cabled up to a single 80 cylinder double-sided disk drive. I wish to read some files of a 40 cylinder (DFS) disk. I seem to remember there was a command that would cause the drive to double-step, but only allow reading. What is it? -tony

19 years

3
4
0 0

8085 vs 8085A

by river＠zip.com.au

Hi, I was looking through my collection yesterday and was testing out an old Intel SDK85 system. I noticed the main processor is stamped 8085, which means this chip is either an 8085 or the "A" was not printed properly and the chip is really an 8085A. I have a few 8085 systems and a box of 8085 CPUs. I checked them all and every one of them is an 8085A. I don't think I have ever seen an 8085, they've all been 8085A types. Other than the stamp on the chip, is there anyway I can tell the difference between an 8085 and an 8085A? Furthermore, is the 8085 rare, and I should put the chip away, or is it nothing special? Why did Intel bring out the 8085A? Were there issues with the 8085? Seeyuzz River

19 years

3
2
0 0

Oscilloscope demo fresh from Assembly

by trixter＠oldskool.org

Thought you'd get a kick out of this: http://www.pouet.net/prod.php?which=31592 It's an entire demoscene-style demo done on an oscilloscope. -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

19 years

3
4
0 0

newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, > IMHO, more important than the EPROM programmer is an >EPROM emulator.... Good point, and the exact reason I picked up a "Softy S3" about 10 years back (which is in SERIOUS need of TLC unfortunately). Great little unit, it's an EPROM programmer/emulator in a package about the size of a large pocket calculator. Dump your code into it via a serial port and enter emulation mode for testing, when you're done just drop in a blank EPROM and hit the "burn" button. :-) I really should get this thing working again.... TTFN - Pete.

19 years

2
1
0 0

Looking for an 8" drive

by silvercreekvalley＠yahoo.com

Anyone with a 8 inch drive available. I'd prefer DS/DD but frankly anything considered. I'm trying to put together an external 8" drive for a PC to allow archiving of 8" disks. Reply of list. Many thanks. Ian. ____________________________________________________________________________________ Need a vacation? Get great deals to amazing places on Yahoo! Travel. http://travel.yahoo.com/

19 years

2
1
0 0

Seattle cctalk'ers

by legalize＠xmission.com

I'm going to be up in Seattle next week on Sun/Mon/Tue for the Microsoft GameFest developer event. I think there's some time on one of the evenings where there isn't a party scheduled :-). Anyone care to meet for a beer or something? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

19 years

1
0
0 0

UK VCF?

by tim.walls＠snowgoons.com

Pete Turnbull said: > On 05/08/2007 21:10, Tony Duell wrote: >>> Hire a genny. >> >> How stable is the frequency of such a unit? Remember many larger disk >> drives have their spindle speed set by mains freqeucy. > > To say nothing of the fact that the output is often nothing like a sine > wave, and many devices don't take kindly to that. Thanks to Yorkshire Electricity Distribution Ltd. being bloody useless, I am considerably more intimate with my building's generator than I was a few short weeks ago, so this is a subject close to my heart! Anyway, the long and the short is that gennys certainly can produce reliable power - more reliable than YEDL, anyway. Our unit is an Iveco 6l 4-stroke diseasel driving a MarelliMotori genset, generating 150Kva of 440v 3phase. Output voltage and frequency are programmable, and frequency stability calibration is documented in the manual. Modern gennies would be more than capable of doing the job, and should be readily available for short-term lease. You'd be surprised how quiet and clean-running they are as well. Fuel isn't cheap though; IIRC running it at ~75% load it uses something in the order of 200 litres/day of diesel; it should be OK to use red diesel in a genny I think (for non-UKers - red diesel is diesel on which fuel tax hasn't been paid,) but you're still looking at a fair old cost. Oh, and to answer the original question - I'm up noorf in Yorkshire, although I'd actually prefer such an event to be in London. I'd be interested in going if it does happen, anyway. Cheers, Tim. PS. Word of advice - check the fuel controller pump relay. Nothing more annoying than being woken up at 3am because a poxy 5 quid relay has stuck and caused the header tank to run dry. Voice of bitter experience there ;-). (On the bright side, if that does happen I can now show you how to hand-prime a dry diesel engine :^).) -- Tim Walls at home in Leeds EMail & MSN: tim.walls at snowgoons.com

19 years

1
0
0 0

PCjr bus to 8 bit ISA bus adapter

by mbbrutman-cctalk＠brutman.com

I finally got around to reverse engineering and understanding my PCjr bus to 8 bit ISA bus adapter. The details are here: http://www.brutman.com/PCjr/pcjr_isa_adapter.html If you are interested give it a read and send me your comments; I'm kind of interested in making sure that I've not written something blatantly wrong. In the interest in keeping the noise level here low please consider whether a comment should be public or off-list ... Thanks, Mike

19 years

1
0
0 0

newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: Dave McGuire <mcguire at neurotica.com> > Date: Sun, 05 Aug 2007 14:54:42 -0400 > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > >On Aug 5, 2007, at 4:16 AM, Gordon JC Pearce wrote: >>> Not the best choice, IMHO, a better one you might find at >>> www.willem.org. >>> There are commercial clones as well, like the one from >>> www.silvotronic.de >>> (board, kit available through ePay for instance). I have bought a >>> kit from >>> them and they work fine. >> >> One caveat with the willem programmers is that there really is only >> Windows software available for them. It works well under Wine with a >> bit of messing about. > > That in itself is a good reason to avoid them, in my opinion. I >have two or three useless PC-based EPROM programmers sitting in >various boxes in the garage. They're useless because the >manufacturer has orphaned them (or just plain gone out of business) >and I either lost the software, or it only runs under some release of >Windows that isn't easily available anymore. (and I'll be damned if >I'm going to have a Windows machine here just to run an EPROM >programmer!) > > Anything worth doing is worth doing right. Get a standalone >device programmer, not one that pretends to be a computer >peripheral...or worse yet, a "Windows PC peripheral". With a real >device programmer, you won't get locked into the whims of the >manufacturer (at least not as easily), or worse yet, the whims of >Microsoft. Having an important tool depend on an unreliably, >proprietary operating system from one manufacturer who is well-known >for sleazy business practices sure doesn't sound to me like a smart >way to run. > > I used a Data I/O 2900 for many years, and I absolutely loved it. >I recently replaced it with a Data I/O Unisite...a big beefy one with >a hard drive. It's Good Stuff(tm) and can program pretty much >anything. When designing or repairing something, I never have to >stop and worry about whether or not I can program a particular >device. These machines have floppy drives, and can deal with DOS- >formatted disks (which most anything can write) and understand >literally dozens of different file formats. They can also be >remotely controlled via a *STANDARD* serial port, and the protocol is >simple and openly documented. > > Like I said...anything worth doing is worth doing right. DataIO is nice but if you don't have one the next best is anything that has an interface that is easily coded for or the code is available. I use a S100 Prommer and have the sources so the end result was a SBC880, RAM-17 and an old 4slot mother using a PC power supply to make a dedicated programmer with a serial port to any host. The nice part about Eproms is they are standardized. Allison

19 years

1
0
0 0

newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Sun, 05 Aug 2007 21:21:07 +0100 (BST) > To: cctalk at classiccmp.org > >[EPROM emulatoros] > >> *) Maybe your and my programming strategy differs; now with SW emulators >> for almost any old CPU being available ona PC, I tend to test my code in > >It does. Remember I don't have anything that will run such an emulator at >anything like a reasonable speed. For test reasons often not a requirement to run at near real speeds. Sometimes slower is good for testing, most sims can do things even a hardware front pannel would envy. Usually I use a spare 486dx/66, certainly not lightining fast but enough to test to see if the code even runs and usually decently fast. the P1mmx/166 I use for email and stuff runs Myz80 and Dunfields NS* Horizon (4mhz z80) and CUBIX (6809) SIMs all run close to or better than real speeds. Thats good enough considering the tools they provide as an offset if any. >Anyway, I like to write little test programs to run on the target >hardware (maybe just outputing a message through the serial port, or >blinking some LEDs, or...). Just to make sure the target is doing >something sensbile. I prefer to run on hardware too but, there are times when a my 486/75 laptop is at hand and I'm way from my bench so why not? Allison

19 years

1
0
0 0

The late, great TRS-80

by theresa＠explainamation.com

The True Story of Microcomputer Pioneers 2007 is the 30th Anniversary of the TRS-80! Only $19.95 348 pages, with full Index 121 illustrations Priming the Pump: How TRS-80 Microcomputer Enthusiasts Helped Spark the PC Revolution takes you back to the largely unknown origins of personal computing. We wrote this book from personal experience, since we were part of the community of small software entrepreneurs from those days. The First Off-the-Shelf Microcomputer We tell the story of how Steve Leininger, working alone in an old saddle factory in Fort Worth, built the first TRS-80; its total development costs were less than $150,000. He had to make a product that could be sold for a price Radio Shack customers could afford. Yet no one had ever sold a complete off-the-shelf mass market personal computer before. The TRS-80 took the microcomputer from an expensive device built by electronic hobbyists to something anyone could buy and operate. Introduced in August 1977, the TRS-80 Model I from Tandy Corporation was sold in Radio Shack's 3500 stores across the nation for the modest price of $599.95. It all began in the late 1970s when a computer hobbyist at Tandy Corporation, Don French, suggested to his bosses that they should build and sell a computer. The Tandy managers were dubious that anyone would buy it, but they paid a visit to Silicon Valley and finally hired a young engineer, Steve Leininger, to come to Ford Worth and build a computer. Leininger siezed an opportunity to do hands-on work with the new microchips that hobbyists were using to build their own computers. The result of his efforts was the revolutionary TRS-80 Model I, a product so successful that Tandy Corporation found itself overwhelmed with orders it was not ready to fill. But as eager customers finally got their hands on their very own computer, for the first time, they could experiment with software. Now anyone could affordably use word processing, spreadsheets, accounting, database and other kinds of software... as soon as someone wrote programs to perform those functions and made them available. And enterprising individuals working in basements and garages did create those programs. By the early 1980s, as the first wave of software entrepreneurs sold their wares through the bulging pages of 80 Micro magazine, customers had a big choice of software. The Real Story, From the People Who Lived It In our case, I (David Welsh) was one of those self-taught programmers. My word processor, Lazy Writer, was sold worldwide to enthusiastic fans who were eager to dump their typewriters. My wife, Theresa, created our product literature, dealt with dealers and customers and managed our office. These were extraordinary years, when software was new and everyone was learning. It was before Microsoft was a household word, and when software generally had only one author. Programmers were proud of fitting useful features into limited memory, and some became stars. Incredible Stories, All True! a.. John Roach, Tandy's product manager, got an agreement from Charles Tandy to build 3500 units after Leininger demonstrated the prototype; this was exactly the number of stores they had -- Roach figured if no one bought the computers, at least the stores could use them. Don French, a true believer, predicted they'd sell 50,000 the first year and urged the company to gear up the factory for mass production. Tandy managers, thinking they could never sell that many, were surprised when, in the weeks after the introduction, the Tandy switchboard was paralyzed with over 15,000 calls from people wanting to order a TRS-80. In the first year, over 250,000 people went on waiting lists to buy a TRS-80! b.. Tandy contracted with Randy Cook to create a Disk Operating System (TRSDOS) for its next generation TRS-80, which would come with floppy disk drives. The company agreed Cook would retain ownership of the code. But Cook, believing Tandy violated the agreement, created a rival DOS which he sold through his own company. Clueless Tandy managers found Cooks' name embedded in the TRSDOS code. c.. TRSDOS replacements appeared - five of them - and programmers made up their own homespun magazine ads touting their products great features and attacking their rivals' products in the pages of magazines like 80 Micro, the most popular of many publications devoted to the TRS-80. d.. Wayne Green, publisher of popular computer magazines, promised to "editorially break" Radio Shack because they would not carry his 80 Micro magazine in their stores; his vitriolic column often lambasted Radio Shack CEO John Roach. e.. Bill Schroeder, a successful businessman, bankrolled Logical Systems, Inc. and sold Tandy on LDOS as the company-sponsored TRSDOS replacement. A state-of-the-art headquarters and a pile of money followed the lucrative contract, but once he sensed the coming demise of the TRS-80, Schroeder simply shut down his company, a move he came to regret. f.. Scott Adams created popular Adventure games for the TRS-80 and other early microcomputers, became a celebrity in the magazines, but went broke when he produced too many game cartridges for a computer that died in the marketplace. g.. Along with microcomputers, robots were also hot. Meet the robots of the 1980s - and the man who said we were all going to have mechanical men in our homes by the year 2000. Unlike the PC revolution, the robot revolution fizzled. h.. A notorious scam artist preyed on the gullibility of microcomputer enthusiasts, destroying the Southern California Computer Society with a Ponzi scheme, then bilking TRS-80 owners out of thousands of dollars with magazine ads from a bogus company called World Power Systems showing phony products. Get the real story, based on interviews with microcomputer pioneers like Steve Leininger, Don French, Randy Cook, Mark Lautenschlauger, Bill Schroeder, Ed Juge and others. They tell their story for the first time, captured by the authors, who lived through it all. Visit www.microcomputerpioneers.com to read excerpts and order your copy. NOTES: You can get the book from us or from amazon.com. We thank all the people who emailed us about the book. We really appreciate your interest and your comments. Please forward this note to anyone who might be interested in Priming the PUmp.

19 years

28
95
0 0

Semi-OT: Interesting or unusual PC Compatibles?

by wbblair3＠yahoo.com

> > They're made of copper, but they're also plated with iron, and once that > > plating is gone the copper doesn't last -- it gets pitted, etc. On really > > old stuff I used to file tips, but not any more... > > Back in the old days, we used to coat the copper tips with silver > (hard) solder (56% silver) to extend the life. But you need a torch > to do that--silver solder melts at about 1100F and requires a special > flux. For what I believe was a short time back in the mid-late-70's, Weller came out with gold-flashed soldering iron tips. They seemed to last forever and kept a tin like a dream which might have been one of the reasons they discontinued them (i.e. tip sales reduced). Mine might still be usable today if they hadn't been lost in one of my trans-national moves (along with a large collection of soldering equipment and aids). ____________________________________________________________________________________ Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games. http://sims.yahoo.com/

19 years

1
0
0 0

Semi-OT: Interesting or unusual PC Compatibles?

by marvin＠west.net

Chris M wrote: > > though). Soldering iron tips are made of copper, so I > don't see any reason why I couldn't chisel one down > for a specific task. Any thoughts? Am I courting > disaster? Depends on the tip. The better soldering tips are coated/plated with another metal, and filing removes that coating. It will still work, but will also require more maintenance to keep the tip working properly.

19 years

1
0
0 0

Semi-OT: Interesting or unusual PC Compatibles?

by marvin＠west.net

> From: davis <davis at saw.net> > > > would a decent eye loupe do the trick, as far as > > determining where the problem lay? Truthfully I've had > > problem power supplies in the past, and nailed each > > solder junction (on the underside of the board) w/a > > hot iron, and it always seemed to work like a charm > > > > From what I understand about the problem, just remelting the junctions and not applying solder will do the trick. Remelting the junctions IF you apply flux to the joint will work fine (if the joint is not too badly oxidized.) Not applying flux is just playing the lottery as to the quality of the resoldered joint. A badly oxidized joint probably needs to go through the solder sucker routine before applying new solder w/flux.

19 years

1
0
0 0

DEC PDP-11/84 H7200 repair advice

by ian_primus＠yahoo.com

Well, I tried today to bring up my 11/84 - initial tests are showing me that there is something wrong with the power supply, an H7200. While the fans run, there doesn't appear to be any +5v. There is a faint ticking sound heard from the supply, and when I drop the power, there is a soft squeaking. So, before I take the this thing apart, are there any suggestions where I can look, common failures, etc? Thanks! -Ian

19 years

2
1
0 0

newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: "Holger Veit" <holger.veit at iais.fraunhofer.de> > Date: Sun, 05 Aug 2007 12:23:15 +0200 (CEST) > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > > >Tony Duell said: >> IMHO, more important than the EPROM programmer is an EPROM emulator. This >> is a box of RAM that connectes to the EPROM socket of the target system >> (the board you'be just made) and also to a host machine (PC, parallel >> port, serial port, USB?). YOu can quickly download perogams into the >> emulator, which then appears exactly as the EPROM does ot the target, and >> the latter can therefroe run said programs. >> >> The advantage over using EPROMs is that you can re-write the RAM as many >> times as you like (EPROMS have a limited number of program cycles) and >> rewrite it quickly. Unless your programming is a lot better than mine, >> you will go mad if you have to wait 20 minutes for an EPROM to be erased >> and reprogammed. each time you want to make a change! > >I haven't so far reached the maximum # of programming cycles for EPROMs in >any experiment. *) As I recommended you might use EEPROMs instead of >EPROMs mainly because of their moderate capacity (you won't need PC FLASH >ROMs with 1MB or more for an 8 bit system) and because they don't need >erasing in the UV coffin. Neither have I. I have 2716s, 2732s dating back to early 1980s that have seen many cycles in many many projects and they are still good. The thing that seems to kill Eproms is excessive erase times and reverse polarity. Allison > >*) Maybe your and my programming strategy differs; now with SW emulators >for almost any old CPU being available ona PC, I tend to test my code in >an emulator, often with single stepping first before I make a HEX file to >burn it; even with EEPROMs - the old turnaround cycle of change a byte, >program, insert and test how far it works is still too long even with RAM >boxes. Admittedly, in the old times, without PC emulation, I did a lot of >paper testing work first before burning the stuff into an EPROM; this >discipline meanwhile degraded... > >-- >Holger

19 years

1
0
0 0

Ampro LittleBoard/286

by rcini＠optonline.net

All: I just got my hands on an Ampro LittleBoard/286. It appears to be in good condition but comes with no manuals or software of any kind. The power connector is obvious but I would like to get a manual and do some reading before getting deep into the board. Googling produces very limited info and no manuals. Does anyone have a copy of the manual they?d be willing to scan or copy for me? Of course, I?ll put an information page on my Web site once I?ve collected a bunch of info on it. Thanks! Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years

1
0
0 0

Xerox 820-II docs

by dgriffi＠cs.csubak.edu

Does anyone here know of an online archive of docs for the Xerox 820-II. I have a few binders for it and I'm wondering how much of this I need to run through a scanner. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

19 years

1
0
0 0

newbie building a scratch-built computer

by river＠zip.com.au

Hi, There's plenty of free x-assemblers you can find on the net. I run x-assemblers for 8080/85, 8086/88, 6800, 6809, Z80, 2650, SC/MP and 68000. They all run on a Windows box. I use two old PCs for my development, one is a 166Mhz Pentium running Win98 and the other is a 486SX (25Mhz) running Win3.1. Those machines can run all the x-assemblers and editors necessary for developing code for most old 8-bit processors. If I need to get serious and require some ICE then I have an Intel MDS220 and an Intel MDS IV, which can do 8080 and 8085 ICE, respectively. You can find basic processor schematics on the net and do your initial build on some breadboard. Depending on the complexity, my final build is usually wire-wrapped or soldered on veroboard. Most of the x-assemblers will create an Intel Hex object code file, and you program your home-brew system to be able to download these files and that's how you load code into your system. Of course, unless you have a front panel, you'll need to create a boot EPROM, so access to an EPROM burner is required. I use an old Microprofessor MFP-1P, which has the EPROM burning board connected and it burns 2516, 2716, 2532, 2732, 2732A and 2764 chips - which is all I use on my home-brew systems. One of the projects I am intending to do is to build a dedicated EPROM burner, using some old 8-bit processor that can program the above chips as well as the 2708. Seeyuzz River

19 years

2
1
0 0

UK Classic Computer event (Was VCF UK)

by Billy.Pettit＠wdc.com

Andrew Burton wrote: Well, I'm south-east UK (East Anglia) a few miles from Cambridge. Regards, Andrew B ------------------------ When I'm in England (4-5 months a year) I live in Colchester. Maybe we can get together next time I'm over - mid 2008. Billy

19 years

2
1
0 0

P112 supplies are exhausted

by dgriffi＠cs.csubak.edu

As of now, my two remaining P112 kits are spoken for (you know who you are). Plans to make more will depend on getting at least 30 units preordered. This brings me to VCF West. I've been asked to do a workshop on the P112 at VCF West . I don't really know what I'd talk about, but at the very least I guess it would be a bunch of people soldering together their P112 kits. So far, my schedule looks good for that. So, please email me at this address or my yahoo account (cupricus) and let me know what you want. -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

19 years

1
0
0 0

newbie building a scratch-built computer (River)

by river＠zip.com.au

Hi, I would have thought "scratch-built" implied designing and building your own home brewed system. Building a kit like the Micro-KIM is not a scratch build exercise. All it will do is give you more practise in soldering. If the whole purpose of this exercise is to have an old 8-bit system so you can program in hex and/or assembler, then you can download an emulator and play around with it from there. If you mainly want to run things off the various serial and parallel ports then something like the Micro-KIM would be useful. If you want to do the whole lot yourself, then the best way to get "dirty" is to design your own system, build it yourself (either via wire-wrap or soldering) and develop your own small debug/monitor program. There's plenty of information on the Internet to find some small designs that you can use, and also hints and ideas on debug/monitor code. I design and build my own systems - not for anything really purposeful, but mainly for fun. I like to see how many different processor systems I can build. I also like expanding on old systems, such as the AIM65 or wire-wrap extra memory/IO boards for Multibus-I, etc. The easiest oldish 8bit processors to use for a homebrew system would be the 6502, 6802, Z80 and 8085. When you've built one... say a 6502... then the next fun thing is to build (say) and 8085 system, with similar functionality and using the Intel family peripheral chips. Then you can get onto the less common processors like the 2650, 9980... or even the SC/MP. In any event, whatever path you take, have fun, learn and enjoy yourself. Seeyuzz River

19 years

9
14
0 0

UK Classic Computer event (Was VCF UK)

by silvercreekvalley＠yahoo.com

I'm in Yorkshire, but would travel anywhere in the UK for a vintage show :) Outside London would be a lot cheaper I would guess, also travelling into London is not cheap these days - especially if you want to exibit and need to bring a car/van. Manchester would seem a good place - as it has some interesting exibits at the Science Museum too - including the SSEM (Manchester Baby) of course - a working recreation of the original - now that's vintage! Ian. ____________________________________________________________________________________Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV. http://tv.yahoo.com/

19 years

4
3
0 0

MMI 6701 bit slice?

by cclist＠sydex.com

There's been a lot of chatter about the AMD 2901 series bit-slice. Does anyone recall any system that employed the MMI 6701 series? Cheers, Chuck

19 years

5
5
0 0

UK VCF?

by mark＠wickensonline.co.uk

Just a curious question for the folks in the UK... Has there ever been a VCF UK? Do you think there would be much interest in one? Mark.

19 years

12
12
0 0

"Whimper" newsletter

by rcini＠optonline.net

All: Does anyone know if scans of the Tandy newsletter ?The Whimper? exists on-line? I did some Googling tonight and came up mostly with stuff on Jessica Tandy whimpering :-) I?ve been told these newsletters had some good T2k info in them but I don?t see them on-line anywhere. Specifically, I?m fishing for information on getting MFM hard drives working on Tandy 2000 machines. I have two machines with to seemingly bad Tandon TM502 drives. I saw another thread from last month that complained about the poor quality of the Tandon drives, so it?s probably bad drives. I have an ST225 drive that I want to run externally as a test but I haven?t been able to locate a manual on the T2k HD controller nor the external drive (25-1025 I think). I don?t want to connect it blindly before I?m confident the controller is setup properly. Irrational fear maybe but I want to proceed methodically. Any info appreciated. Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

19 years

3
3
0 0

Victor V286C

by RodSmallwood＠mail.ediconsulting.co.uk

Hi I have the system unit for a Victor V286C PC manufactured in 1991. Its in really nice condition. Keyboard and mouse are no problem. However the display is a different matter. It has a nine pin display connector which would make it a CGA ,MGA or Hercules output. Anybody any ideas as to where I might find a matching monitor? Rod Smallwood

19 years

2
1
0 0

Victor Sirius/9000 Monitor

by classiccmp＠memory-alpha.org.uk

Hi, >> there is static on the crt's face when you power up? >>If there's no provision for an AC plug, then you have >>your answer as to where the power comes from. Didn't > > Indeed. As an aside to this, the Sirius' monitor (like that of the later Apricots) has a thin sheet of fabric stretched across the front of it (secured by the front bezel) so there is no noticable static charge on the screen when it's powered up. Kinda puts paid to the quick and easy method of determining if it's getting power.... :-( TTFN - Pete.

19 years

3
4
0 0

RiscOS hardware in the US?

by aek＠bitsavers.org

> I know the Acorn > Archimedes runs RiscOS, but what else? I'm not sure > that the Acorn was ever even sold in the US. As far as I know it was not. My first exposure to the Acorn machines were those brought over in '87 for Apple's first attempt at a RISC Apple II (Moebius). I never saw a RISCOS machine sold here. I've found a few of them on eBay for CHM. Shipping from the UK is painful. I've also had an unusually high percentage of them never arrive.

19 years

2
1
0 0

newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: Re: newbie building a scratch-built computer > From: "Chuck Guzis" <cclist at sydex.com> > Date: Fri, 03 Aug 2007 20:41:57 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 4 Aug 2007 at 4:18, Ensor wrote: > >> <GRIN> What, like a logic probe...? > >I figured if the OP was using an LED as a logic probe, then he might >not want to throw his filthy lucre after a commercial probe. It's >easy enough to toss one together out of hellbox detritus. > >> I don't actually have a logic analyser myself (annoyingly), and tend to >> reach for my logic probe long before I resort to digging out my 'scope. I >> find mine indispensible. > >Same here; rather than set up a scope just to see if a line is >wiggling, a logic probe is much easier. on my bench I have a several multimeters [digital and analog], scope, a pc based logic analyser and a logic proble. the onder they are used generally puts the logic analyser last right after the scope. >> If the OP is in the UK, then Maplins do a nice one for ?15 (which is less >> than I paid for mine back in 1980). > >Radio Shack used to offer one for a reasonable price, but no >longer... I have one of those and it works ok, I also have one that responds to really fast pulses. Allison

19 years

1
0
0 0

UK VCF?

by sellam＠vintagetech.com

RE: trademarks I stand corrected: Hans Franke acquired EU trademarks on "Vintage Computer Festival" some time ago. I imagine these would extend into the UK in some fashion, but then I'm not an international lawyer (or otherwise). -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years, 1 month

14
15
0 0

Help needed...VAX 7000 mop booting problems

by pat＠computer-refuge.org

So, I've been trying for a few days to get my VAX 7000/640 (currently with only one processor, so a 610 I guess) to MOP boot into a VMS cluster. I'm running OpenVMS hosted off SIMH, and have tried both 7.2 and 7.3, and have successfully booted my VAX 4000/100 off the setup. I've also successfully booted the firmware update utility (LFU) and the file "ISL_LVAX_073.SYS" that comes on the install CD, through MOP. However, when I try to do a mop boot, the system just halts and says boot failure: --------------------------------------------------------------------- >>> b -fl 0,0,0 exa0 Initializing... F E D C B A 9 8 7 6 5 4 3 2 1 0 NODE # A M . . . . . . P TYP o + . . . . . . + ST1 . . . . . . . . B BPD o + . . . . . . + ST2 . . . . . . . . B BPD + + . . . . . . + ST3 . . . . . . . . B BPD + . . . . . + . . + . . . + C0 XMI + . . . . . . . . . . . . . . . . C1 . . . . . . . . . . . . . . . . C2 . . . . . . . . . . . . . . . . C3 . A0 . . . . . . . ILV . 512 . . . . . . . 512MB Firmware Rev = V4.3-4842 SROM Rev = V3.1-0 SYS SN = AB25002CX0 Booting... Connecting to boot device exa0 Created device: exa0.0.0.1.0 Attempting MOP boot. Requesting MOP Assistance Volunteer. MOP Assistance Volunteer found. Loading... ... Load complete! Image size: 133241 Host name: SIMV73 Host address: aa-00-04-00-06-04 bootstrap code read in base = 154000, start = 0 boot device name = exa0.0.0.1.0 boot flags 0,0,0 boot device type = 69 controller ID = a unit number = 0 node ID = 0 channel = 0 slot = 1 hose = 0 jumping to bootstrap at 154000 CPU:0 Console entry reason: HALT instruction in kernel mode Entry PC: 006B6368 Entry PSL:041F0600 >>> boot failure --------------------------------------------------------------------- I've tried it omitting the -flags part, and with -fl 1, but they all give the same error. Anyone have any useful hints? Or, another VAX 7000 to try repeating my (failing) experiment on? Thanks, Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

19 years, 1 month

4
6
0 0

UK Classic Computer event (Was VCF UK)

by classiccmp＠memory-alpha.org.uk

Hi, > Can we have a quick poll to see who lives where? I'm located in Birmingham. TTFN - Pete.

19 years, 1 month

1
0
0 0

UK Classic Computer event (Was VCF UK)

by RodSmallwood＠mail.ediconsulting.co.uk

UK Pioneers? If it were not for the fact that they are in permanent off line storage. Alan Turing and Tommy Flowers. Or some of the LEO people - (5000 valves and 33kW of heat to get rid of) -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Roger Holmes Sent: 03 August 2007 10:42 To: cctalk at classiccmp.org Subject: UK Classic Computer event (Was VCF UK) > > If Bletchley Park might be able to do a VCF in two or three years >> time, maybe we could do something much simpler in the mean time, >> without using the VCF name. Just a get together of anyone in the UK >> with an interest in old computers and hopefully a few who would want >> to exhibit theirs. Who would be interested and about how much space, >> if any would they want? > > > My thoughts were developing along the same lines, the key question > surely is numbers. 7 replies so far from the UK. > How many do we think would attend, and could some core events be lined > up to to ensure a worthwhile experience? I'm thinking here of the > datacentre visits that (I think) were run from VCF Europe last year I see. Probably the biggest concentration of these in the UK is still central London, though I'm out of touch with that side of things. > and the involvement of industry alumni that the US events have > enjoyed. Many of the real pioneers (who are still alive) are in the Computer Conservation Society. Maybe we could involve them, I am a member but I don't attend meetings (except one as a speaker). > It's not like we don't have a few home-grown pioneers - Clive Sinclair > and various Acorn people spring to mind. Ah, you're talking more modern pioneers, ones of the microprocessor era. Yes indeed. Alan Sugar's probably free now :-) Just kidding. Do we have any contacts or ideas on how to contact them? Isn't it Sir Clive now by the way, we don't want to put anyone's nose out of joint from the first contact. Roger.

19 years, 1 month

1
0
0 0

UK Classic Computer event (Was VCF UK)

by RodSmallwood＠mail.ediconsulting.co.uk

I'm located about 50 miles west of London (near the (in)famous Greenham Common.) Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Gordon JC Pearce Sent: 03 August 2007 11:32 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: UK Classic Computer event (Was VCF UK) On Fri, 2007-08-03 at 10:42 +0100, Roger Holmes wrote: > I see. Probably the biggest concentration of these in the UK is still > central London, though I'm out of touch with that side of things. I got the impression that the bulk of the UK classic computing community was around the Midlands and north, with a few exceptions. Can we have a quick poll to see who lives where? I'm about half-way up Scotland on the left-hand side. Gordon

19 years, 1 month

1
0
0 0

ST-412 Jumpers

by silvercreekvalley＠yahoo.com

I'm just trying to figure out the jumper settings on a ST-412 drive. I've read the manual and it sort of helps, but its somewhat obtuse in style. I have two drives which are taken from working PDP 11/23's - they both have the same setting on the jumper block. The jumper block is a 16 pin DIL socket, with a 14 pin DIL plug inserted. The plug has 7 metal bars, 3 of which are open circuit, the rest are closed. Working from the connector end of the PCB, the first bar - open second bar - open third bar - closed fourth bar - open fifth bar - closed sixth bar - closed seventh bar - closed Looking in the manual the first bar would persumably be written as 8-9, the second as 7-10 etc? Anyway, I'm trying to use this in a PERQ just to test the EIO is working, and I can boot of floppy. So I need to set this as drive 1. What bars would I need to open and close? Thanks Ian. ____________________________________________________________________________________ Yahoo! oneSearch: Finally, mobile search that gives answers, not web links. http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC

19 years, 1 month

5
5
0 0

newbie building a scratch-built computer (River)

by Billy.Pettit＠wdc.com

Chuck Guzis wrote: At one time or another, cross-assemblers in FORTRAN were coded up for most of the early 8-bit chips. I believe that Intel even offered one as a standard product at one time. GI certainly did--I have it mentioned in their product brochure. The real problem would be locating one of these. In all likelihood, one last saw existence as a stretch of 9-track 1/2" tape. Cheers, Chuck --------------------- That was a standard practice back in the 1960's. I still have paper listings of a FORTRAN program to cross assemble CDC 160-A code on a 3300. And I think (been a few years) that I have the same cross assemblers for the 1604 and 924 machines. Later, there were 6600 FORTRAN cross assemblers for all the 3000 machines. My copies of these are on a 7 track tape which now resembles a solid disk of celluloid, sadly. The card decks went into the dumpster on the last move. But you are correct about 8 bit support using FORTRAN. I know I had paper listings for the 6502, 8080 and Z80 processors. And I think I still have the BASIC cross assembler for the 6502. Thinking about it, I also gave Al a paper tape for a 6502 assembler that I used on an Apple II with a teletype. I'll have to ask Al if he has had any luck archiving it. There were definitely FORTRAN cross assemblers for the Motorola chips (6800 &6809) floating around for years. But I don't think I ever saved any. Must look and see. Billy

19 years, 1 month

1
0
0 0

Linus 1000 Write-Top computer

by tosteve＠yahoo.com

I just received my Linus 1000 computer - it's nice, interesting to use. But it has no stylus (writing pen), just the wire - still useful, just have to be careful to not scratch the screen. Does anyone have any interesting information, manuals, or a stylus? Thanks! Steve. --------------------------------- Sick sense of humor? Visit Yahoo! TV's Comedy with an Edge to see what's on, when.

19 years, 1 month

1
0
0 0

Acquired - IBM portable / IBM Model 5155

by mark.seeberger＠argis.com

Do you still have this machine available? Mark Seeberger ====================================================== Hello, all: A friend of my sister-in-law gave me the original IBM portable (well, lugable) Model 5155 and RGB monitor. It's the dual drive model. There's a 37-pin DB connector on the back. External floppy?? I have to say, this equipment is in the best condition of any classic item I have ever acquired. Not a scratch, dent or cabinet fade. No dust either...anywhere. I know that the owner was anal retentive, but oh boy. I haven't tried yet, but it was just taken out of service after many years of use. Rich [ Rich Cini [ ClubWin!/CW1 [ MCP Windows 95/Windows Networking [ Collector of "classic" computers [ <http://highgate.comm.sfu.ca/~rcini/classiccmp/> <================ reply separator =================>

19 years, 1 month

1
0
0 0

UK VCF?

by marvin＠rain.org

> > Sellam, if you're so enthusiastic as to set up a "rival" VCF to spite > > someone setting up a VCF-a-like, why not just set up a VCF in the UK? > Now, we could all type about this, discuss the finer points of > international trademark law and call each other names, or we could > push ahead, think of a rough location and discuss some of the > logistics and what would be needed to undertake VCF-UK. > > Simon Great comment!!! And as to what's in a name, try "recognition" since VCF has been going on for some 10 years. I would expect both Sellam and Hans to be *very* interested in getting a VCF UK going. Instead of putting up straw men to argue about, try working together ... it is a lot more effective!

19 years, 1 month

1
0
0 0

More on CUBIX - Was: newbie building a scratch-built computer

by ajp166＠bellatlantic.net

> >Subject: More on CUBIX - Was: newbie building a scratch-built computer > From: "Dave Dunfield" <dave06a at dunfield.com> > Date: Fri, 03 Aug 2007 07:29:17 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >>> If the whole purpose of this exercise is to have an old 8-bit system so you >>> can program in hex and/or assembler, then you can download an emulator and >>> play around with it from there. If you mainly want to run things off the >>> various serial and parallel ports then something like the Micro-KIM would be >>> useful. > >There's an experience gained by building it yourself that simply can't be obtained >by playing with an emulator. Building a real/physical computer is a worthwhile >excercise and beneficial learning experience. Besides, friends and family are much >less impressed by a wave of the hand at a PC running an emulator with the statement >"I downloaded that!" then they are by a rats nest of wires, circuit boards, cables >and such and "I built it myself!" > There is magic in building it yourself however it's constructed be it emulator or hardware. The magic is that you have to understand it to build it. Simply assembling "it" does not provide it beyond the mechanical accomplishment though if you study the result there will be knowledge gained. <<<snippage>>> >Another plug for my CUBIX system: > >The system comes with the following resident (runs on CUBIX itself) development >tools: > > 6809 Assembler > ASP - A simple high-level language/preprocessor for the assembler. > Debugger (breakpoints, single-step, disassembler, all the usual commands etc.) > Basic > Forth > Micro-APL > C compiler > 8080 simulator > Text editors / utilities / etc. > - Source is posted for all of the above except for the C compiler. > >I can also provide PC based cross development tools for the 6809 including: > > Hardware Debug Monitor (RAMless - needs only ROM to run) > Full-up ROMable 6809 monitor (Quite powerful) > 6809 Assembler > 6809 Disassembler (Does symbols, memory block types, comments etc.) > 6809 C compiler > 6809/CUBIX simulator/emulator - Lets you run 6809 code on your PC with ICE > type debugging capabilities - Also boots CUBIX, provides access to all > the resident tools etc. He may appear biased but those are powerful tools and unlike back when I built my Altair or the 8008 before that they are available! >I'm obviously biased, but I think it's a worthwhile system to build. Depending >on your skill/experience/time available, it should take anywhere from a day or >two to a few weeks to build it. What you get from the excercise is a unique >system that can actually do useful things, and the experience and satisfaction >of having created it with your own two hands. Having built it yourself, along >with the fact that I have released the source code means that you have the >opportunity to fully understand EVERYTHING about this system - down to the >tiniest wire, and the last byte of code - this is something that rarely happens >with modern computers. This system is simple enough that you shouldn't have >trouble following the design, yet powerful enough to be considered a "real" >computer. MY $0.02, great teaching tool, good for understanding hardware, excellent for a look at a straightforward OS example that is very usable. For an old hand PDP8/11, NS*DOS and CP/M style OSs CUBIX OS was a real eye opener to different ways files can be orgainized. <<<<snippage>>>> >I should also point out that unlike most home-grown designs, the CUBIX system >is very well documented. Two of the three 360k diskettes that normally accompany >the system are filled with documentation. Over a dozen documents containing >more than 300 pages. Therein lies the greatest value. Even if you didn't build it there is a wealth of information that applies to any CPU/system. >What else can I say - all of the CUBIX material is available free on my site. >If people are interested, I could organize it into a separate "building a >CUBIX system" page with more information, additional PC tools and other related >material. Let me know if there is any interest. Having built one and meaning to spend more time with it it's a good project and in some respects less painful than doing a Z80 CP/M machine from the ground up. The key thing is that when operational like CP/M systems there is enough software to be useful. This is unlike the microKIM, CosmacELF style minimal systems where hand entered programs of a a few hundred bytes are it. The other feature is there is a CUBIX SIM and while building you can become familiar, read docs, look inside the code and develop software or other projects. Allison

19 years, 1 month

1
0
0 0

Fwd: [sdiy] Wanted: Multibus (late 70s microprocessor bus) extender card

by aek＠bitsavers.org

> Does anyone happen to have spare, or can anyone point me in the direction of > an inexpensive source for, an extender card for Multibus Halted Electronics has dozens of them in their 1/2 off bin

19 years, 1 month

3
2
0 0

UK VCF?

by RodSmallwood＠mail.ediconsulting.co.uk

Hi As much as I would like to see something along these lines. It would be best to sort out the funding first. Perhaps a small group of interested parties could meet to see if such an event is feasible in the UK. Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Andrew Burton Sent: 02 August 2007 23:16 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: UK VCF? Roger Holmes <roger.holmes at microspot.co.uk> wrote:> First a simple question, how many readers of > this list are in the UK? I am one of (hopefully) many :) > If Bletchley Park might be able to do a VCF in > two or three years > time, maybe we could do something much simpler in the mean time, > without using the VCF name. Just a get together of anyone in the UK > with an interest in old computers and hopefully > a few who would want > to exhibit theirs. Who would be interested and > about how much space, > if any would they want? Not much. Just enough to have a table for my laptop & opened up Amiga. I could bring a few issues of 80 Microcomputing aswell, which would be the ones I have duplicates of. The duplicates aren't in particularly good condition so it doesn't matter too much if they were to get accidentally damaged :) All the other issues of 80 Microcomputing I have are pretty much in mint condition and I wouldn't risk bringing to the event (is that bad? Would anyone else feel the same way?). > I guess we would need to double that up to allow for aisles etc. Then > we'll know the size of venues to look for. By the way, I was really > thrown by the mention of the planet Venus, it took me a while to work > out it was a typo for venues :-) > > Then there's the question of vehicle parking. > How many and are we > talking only cars and small vans or big vans and articulated lorries? I'd just bring my car. > Roger, > who is planning a 1300 sq ft extension to his computer room, and who > lives on a farm in Kent. Probably too small and > not central enough, > but who knows. Regards, Andrew B aliensrcooluk at yahoo.co.uk

19 years, 1 month

1
0
0 0

As is test equipment

by phat＠mountaincable.net

Hello there: I realize this is a bit of stretch since 2002 but do you still have the General Radio 1217/1201C combo still for sale? Regards, Paul

19 years, 1 month

1
0
0 0

newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, > What is wrong with C?! :( Don't get me started.... ;-) > Yes it is not assembly, but it is also much closer to the >hardware then most of the other structured programming languages >out there! I've always regarded "C" as more of a "high level macro assembler", I personally don't regard it as a high level language as such - sort of a halfway house. Now, if you understand how C "works" (read K&R a few times as a start) and the intimate details of your target hardware then you can do a passable job. The problem is, most programmers nowadays simply don't have that level of knowledge, which inevitably leads to large, slow, buggy firmware which is nigh on impossible to fully debug. And then there's the issue of readibility. I don't care what anyone says, I find assembly language listings VASTLY easier to understand than someone elses' "C" code no matter how well commented/documented (even when I've never encountered that particular processor before). I'll give you a personal example. I was once tasked with converting a real time OS from Z8 assembly language (yes, Z8) to V50 (x86) assembly language; we're talking a lot of code here, the assembled code filled almost an entire 32K EPROM. Took me about three and a half weeks, at the end of which I had a well structured, fully documented and FULLY DEBUGGED (I took a LOT of pride in never releasing code which was less than 100%) product which was cleared for production. Unknown to me at the time, initially at least, my boss also tasked our "C" programmer to do the same job. He did the conversion in about two weeks....and then spent the next TWO MONTHS trying (and failing) to track down the bugs in his code, about a third of which were caused by compiler bugs rather than something he'd done wrong. I was eventually brought in to help him, at which point I learnt rather a lot about how bloated and inefficient the output from "C" compilers can be. Needless to say, it was impossible for us to fully debug his code (or fit it into a 32K EPROM for that matter) and so it was dropped in favour of mine. "C" certainly has it's uses (I'm sure), but in my opinion, embedded systems/device drivers isn't one of them.... TTFN - Pete.

19 years, 1 month

9
11
0 0

C history / was Re: newbie building a scratch-built computer

by aek＠bitsavers.org

> I recall a conversation with a fellow at Xerox R&D on Coyote Hill > Road (not PARC) around 1983 or so. He remarked that much of the > Xerox document management code was in 'B' and not C. Unlikely. 'B' was a BCPL derivative which predated 'C' at Bell Labs. BCPL was used at PARC as the basic high level language for the Alto. During this same time period, a strongly typed language called Mesa was developed, which was used on the Alto, and later on the machines which evolved into the Xerox Star. Variations of Mesa were the primary Xerox development languages up through Globalview, which caused Xerox huge problems with hiring programmers, since no one outside of this world had any experience with the language. They eventually developed a Mesa to C translator called Memosa.

19 years, 1 month

2
1
0 0

PERQ T2

by ajp166＠bellatlantic.net

> >Subject: Re: PERQ T2 > From: ard at p850ug1.demon.co.uk (Tony Duell) > Date: Thu, 02 Aug 2007 19:54:44 +0100 (BST) > To: cctalk at classiccmp.org > >> >> Hi Tony, >> >> Thanks for the reply. >> >> The drive is a Micropolis 1303, and I think it has >> failed. The >> drive does spin down after a minute or so. > >You know, it's really hard debuggin a machine when you're not told all >the symptoms :-) > >More seriously, this does sound like the standard Micropolis 1300-series >problem, when that rubber bumper goes sticky and prevents head movelemt. >The bad news is that all Micropolis 1300s (and their ESDI equivalent?) >suffer from it, or at least if they don't they will soon. > >Finding a replacement 1300-seires is probably not the wisest thing to do, >therefore. > >I've never tried it, but I have heard that people have had some success >in openign up the HDA *yes, outside a clean room), removing the bumper, >shutting the whole thing up and using the drive as normal. How long it'll >keep working is anohter matter. I've done it three times and two are still running over 8 years and many thousands of hours later. I'ts been done by others. Allison >> >> I noticed the PERQ manuals do state that the hard disk >> must >> be able to perform a "locate disk heads" operation, >> even >> for a floppy boot - which I assume means find track 0. > >I beleive the hard disk must og 'Ready' Quite what that means I will have >to check -- the boot ROMs check for a particular state in one bit of a >particluar port. I candig out the EIO and DIB schematics to find out just >waht that means if you like. > >> Hence >> I'm unable to boot from floppy. >> >> I will check the signal levels just to be sure. >> >> Wondering where to go from here. I'm guessing I could >> buy a >> replacement 1303 drive - but they are not cheap (hence >> my >> other posting) just to try and see. > >Any reason not tu use some other ST412-interfaced drive? The PERQ _can_ >use it. > >-tony

19 years, 1 month

1
0
0 0

perkin-elmer/concurent manuals

by Philip.Hastings＠pseg.com

I might be interested in these if you still have them ----------------------------------------- The information contained in this e-mail, including any attachment(s), is intended solely for use by the named addressee(s). If you are not the intended recipient, or a person designated as responsible for delivering such messages to the intended recipient, you are not authorized to disclose, copy, distribute or retain this message, in whole or in part, without written authorization from PSEG. This e-mail may contain proprietary, confidential or privileged information. If you have received this message in error, please notify the sender immediately. This notice is included in all e-mail messages leaving PSEG. Thank you for your cooperation.

19 years, 1 month

1
0
0 0

Micropolis 1303

by silvercreekvalley＠yahoo.com

Hi Tony, I did try some other drives, namely some MFM drives I had to hand from a PDP 11. These were ST-412 drives. I simply connected the existing PERQ controller to the new drive, hoping the hard disk would show ready, but no joy. The drive didnt even show a flicker on the LED. The drives were all known working, and boot fine on a 11/23. I didnt change any jumpers as the drives were the only drive in the PDP 11's. Could this mean a fault EIO card? I've examined the board carefully under a maginfier for track breaks, dry joints, and damage. The edge connectors were cleaned and all IC's have been carefully re-seated. Ian. ____________________________________________________________________________________ Got a little couch potato? Check out fun summer activities for kids. http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&…

19 years, 1 month

3
2
0 0

PERQ T2

by silvercreekvalley＠yahoo.com

Hi Tony, Thanks for the reply. The drive is a Micropolis 1303, and I think it has failed. The drive does spin down after a minute or so. I noticed the PERQ manuals do state that the hard disk must be able to perform a "locate disk heads" operation, even for a floppy boot - which I assume means find track 0. Hence I'm unable to boot from floppy. I will check the signal levels just to be sure. Wondering where to go from here. I'm guessing I could buy a replacement 1303 drive - but they are not cheap (hence my other posting) just to try and see. Ian. ____________________________________________________________________________________ Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us. http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7

19 years, 1 month

2
1
0 0

Thoth

by aek＠bitsavers.org

Brent Hilpert wrote: > Around 1980 I was programming in Z (dev'd at U of Waterloo IIRC, Thoth/Verex > OS), another descendant of B/BCPL and so a sibling of C Are there still copies of Z or the operating systems around that you know of? I asked Dave Cheriton about this a few years ago, and he didn't have a copy.

19 years, 1 month

2
1
0 0

HP 165xx internal documentation?

by aek＠bitsavers.org

On the chance that someone might know someone from HP Colorado Springs.. Is there any documenation around on the operating systems or internal workings of the 16500A or B logic analyzers? The 500B is a pretty sophisticated device, but of course there is no useful docs in the service manual on how the hardware or software actually works.

19 years, 1 month

1
0
0 0

Fwd: [sdiy] Wanted: Multibus (late 70s microprocessor bus) extender card

by rtellason＠verizon.net

Can anybody here help this guy out? ---------- Forwarded Message ---------- Subject: [sdiy] Wanted: Multibus (late 70s microprocessor bus) extender card Date: Tuesday 31 July 2007 17:30 From: "Steve Lenham" <lenham at clara.co.uk> To: "SDIY list" <synth-diy at dropmix.xs4all.nl> Hi, Does anyone happen to have spare, or can anyone point me in the direction of an inexpensive source for, an extender card for Multibus (the late 70s microprocessor bus standard)? I know that Digikey and Mouser list them new, but they are around $120 each. I'm working on a Lexicon 224 reverb unit (a fascinating device), which uses a Multibus backplane and eight plug-in cards. I need to be able to work on these cards with them still attached to the bus - hence the need for an extender. Any pointers would be much appreciated. I'm in the UK, but am happy to import. Cheers, Steve L. _______________________________________________ Synth-diy mailing list Synth-diy at dropmix.xs4all.nl http://dropmix.xs4all.nl/mailman/listinfo/synth-diy ------------------------------------------------------- -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin

19 years, 1 month

1
0
0 0

cctalk Digest, Vol 48, Issue 2

by mtapley＠swri.edu

At 18:38 01-Aug, Jerry wrote: >Hi, > >I'm trying to get a MONO Cube I have here back to >a complete box. Good going! >Missing is the >- Floppy Drive 2.88 Sony and Bezel Drive is not so critical, many of them didn't have that. But having one is pretty nice when it comes time to boot the install CD. A Bezel is a *big* deal because of cooling airflow, I found out. My floppy drive looks out through a non-bezel aperture, which I keep covered with tape most of the time so cooling air doesn't escape that way. >- mounting Bracket for the Drives ??? The large piece > above the Power Supply is there. I would guess it had > something to hold the 3 1/2 drives. The what? ;-) NeXT supplied 5.25" hard drives, which just fit between the walls and mount with bolts through the bolt-holes in the side walls. You are more or less on your own for mounting a 3.5" drive in a cube. Mine >- no Optical drive or cover. Not Sure it had one ?? Many of them didn't have an optical drive, and almost *none* of them now have a functioning optical. Dust is one culprit, but there seems to be something (I have not really investigated) that kills them all over time. The optical is a great novelty and I really wish it had caught on, but it's not too useful today. >- no expansion slot covers. Rear cover is there. I think these would be less critical for cooling, but still good to have. >- mouse is missing Depending on the model, you may be able to use an ADB mouse (though will miss the other button). Do you have an ADB keyboard (distinguished by the "control" bar below the space bar)? >This is a 68040 25 built is 1991 > >Looking into the 2.88 floppy it looks like there was >no standard for the connection on the different makes. >So either I have to use a sony or make a adapter Sony, I think. I'm not aware of any substitutes. I can endorse Randy Rencsok, reachable through: http://www.channelu.com/Turbo/index.html as a parts supplier. There are also a fair number of downloads on his site which may be of use to you, as well as pictures of some of the missing parts. I also note the existence of http://www.blackholeinc.com/ but have not done business with Rob Blessin, though he's been pretty supportive in general of the NeXT community. >Thanks, Jerry > >Jerry Wright >JLC inc Good Luck! -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

19 years, 1 month

1
0
0 0

UK VCF?

by silvercreekvalley＠yahoo.com

I'd be delighted to attend a UK VCF if there was one or something similar. At a push I would be happy to demo a few interesting machines :) Ian ____________________________________________________________________________________ Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow

19 years, 1 month

1
0
0 0

UK VCF?

by silvercreekvalley＠yahoo.com

I'd be interested too. For venues, what kind of size place would be needed? I've vistited several fairly active shows, some of which could be called somewhat vintage - eg the RiscOS shows. These are often held in sports halls or similar. There is also the retro show North, which is more classic gaming consoles. (www.retronorth.co.uk) Some others in the past included the 'all formats computer fairs', which often combined commercial sellers/items for sale with stands from clubs. A bit like the VCF in Mountain View. Ian ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

19 years, 1 month

2
1
0 0

Imagedisk 1.17

by ajp166＠bellatlantic.net

> >Subject: Re: Imagedisk 1.17 > From: "Dave Dunfield" <dave06a at dunfield.com> > Date: Fri, 27 Jul 2007 07:11:40 -0500 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >> Lately I've found a very nasty bugs in IMD 1.16 (at least with a secondary >> FDC, tested on two different machines of different speed with different >> FDC). Reading disks is mostly fine, but writing to a drive connected to a >> secondary FDC doesn't work reliably. The problem is that the drive won't >> step properly, i.e. sometimes it misses a step pulse which makes the >> written disk unusable. The same problem occurs e.g. with the clean head >> routine. I had a look on your source code and I think it's a timing >> issue. I've inserted a small delay ('delay(55);') into the seek routine >> (between line 998 and line 999 in version 1.16) and this solved all the >> problem. I think that the seek routine is called too early after having >> sent the previous command to the FDC although it shouldn't matter because >> wrfdc officially waits for the FDC to be ready before sending a byte. But >> apparently some (many? all?) FDCs appear to be in a ready state although >> they are not yet ready to do a seek... really weird. > >It's impossible to test every FDC (at least in a free project). This >explaination doesn't make sense because the seek routine has a 55ms settleing >delay at the end (which you can increase with the SD= option), and the clean- >head routine has a 100ms delay between seeks, which makes a total of 150ms >delay. There are no other intervening commands during "clean heads" - since >seek() waits for seek complete, 150ms should be plenty of time for the >controller to be ready for another command. This also does not explain why >reading a disk would work, so I suspect there is some other factor involved >here.. > >This is the first I've heard of this problem - if you have problems with >ImageDisk, the best way to get it fixed correctly might be to work with >me on it instead of posting "fixes" to public forums. But... thats what >happens when you release source code. Ah, the step gremlin. It's an old 765(all!!!) problem. The problem is when the step pulse is set to minimum acceptable for the drive it's possible that due to internal timing of the 765 it can shorten the step timing of the first pulse by 1 count. If that occurs many drives seek badly and you get read or write errors because your not where you thought you were. Note: some old drives due to the lubricants turning to goo will also exhibit this type of error. There is one solution, step slower (SRT+1). Another problem is the 765 was designed for 77track drives (8" floppy) and there were no 80track minifloppies. So the Recal only issued 77 step pulses and would flag an see error if the drive was 80track. One fix is to issue a new Recal and see if the drive properly homed this time. The problem is there are some cores that fixed this and will issue up to 256 step pulses. The problem can also arise when using SA400/400L style drives ans some (not all) will jump track (loose the groove on the positioner disk) if stepped too far past tracks 000 or 39. Last gremlin is the 765(and cores) were designed to Seek/Recal up to 4 drives but PC hardware does not always decode this and may have drive 0 also appearing as drive 2 or 3 which makes it susceptable to being repositioned by commands not intended for it. Allison

19 years, 1 month

5
10
0 0

newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, > No matter what language, toggling in your code teaches (or >scares) you to write efficient code. : ) LOL, I used to seriously mess with my boss' head when dubugging code. I used to patch my code, in hex, in an EPROM emulator (a "Softy S3") as it was quicker than editing the source on my PC, assembling it and then downloading it the the emulator.... He just couldn't get his head around how I could "assemble" code in my head, even when I explained to him how easy it was when you understood how the opcodes were formed (doesn't work for all processors mind). TTFN - Pete.

19 years, 1 month

2
1
0 0

UK VCF?

by sellam＠vintagetech.com

Hello all! Just to add some clarity here: 1) No, "Vintage Computer Festival" is not trademarked internationally, nor do I have any inclination to invest the enormous amounts of money to do so. Besides, if anyone did want to try to put on a vintage computer festival and call it the "Vintage Computer Festival", there's a simple solution to that: I would hold a real Vintage Computer Festival down the street from theirs on the same dates and advertise the hell out of it and ensure that the wannabe "VCF" only got two attendees (who would be stragglers from the real VCF up the way ;) 2) There have been several discussions over the years about hosting a VCF UK. I can say it WILL happen--at some point. I just need someone in the UK eager and ready to make it happen. Talk to Evan or Pat about their experiences to see how it is done. Of course, talk to me if you're seriously interested and I'll get you started. It would be nice to finally have a VCF UK starting in 2008. 3) I am always interested in expanding the VCF to any area on Earth where there is a viable chance of it succeeding (i.e. attracting more than a few dozen attendees). I would really like to expand into Japan and South America, but I will consider any location (that doesn't conflict with existing events). This year is the 10th anniversary of the VCF (it's now on topic!) If you've never been to the main VCF in the Sillycon Valley, this is the year to come. The dates are November 3-4 (and don't be surprised if they are extended). Now that it's August, planning will begin in earnest. Speakers will start getting posted soon. Now is a great time to start thinking about an exhibit and getting it registered. A bunch of exciting announcements are in the works so stay tuned ;) -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

19 years, 1 month

1
0
0 0

UK VCF?

by evan＠snarc.net

That isn't the point, Pete. The point is: everyone knows the VCF is Sellam's thing and it would be really lame for someone else to make an event and call it a VCF. It would also just be dumb even if it weren't unethical: Sellam (and me and Hans and Pat) have done around 20 VCFs so far and we learned a LOT from the experience, so whoever is serious about making a new VCF would be wise to work with Sellam's organization, not around or against it.

19 years, 1 month

4
4
0 0

Victor Sirius/9000 Monitor

by silent700＠gmail.com

I just collected a Victor machine which I believe to be the 9000 aka Sirius 1, although it does not have a model # anywhere I can find. The fans and drive powers up, but the display does not. It appears to get its power via the 9-pin signal cable. Can anyone confirm that this is the case and if this is a common issue, perhaps with an equally common fix? -j -- Retrocomputing and collecting in the Chicago area: http://chiclassiccomp.org

19 years, 1 month

4
7
0 0

looking for DEC 875-A

by iamvirtual＠gmail.com

I am attempting to revive a Vax-11/750 that I recently acquired. During the several moves of the machine, damage was done to the 875-A power controller. The fuse holder, power control switch, and circuit breaker were all damaged. In particular, the circuit breaker (CB1) had the handles snapped clean off. The individual poles can be moved to the ON position, but always return to the OFF position. I am looking for a replacement of either the entire power controller, or, just the circuit breaker assembly. I have located a for-profit source of an 875-A, but it will be a few hundred dollars to purchase it. If anyone has a spare 875-A or breaker, I would be extremely grateful. Thanks! --barry

19 years, 1 month

1
0
0 0

Reading NorthStar Horizon hard sector disks on PC

by ajp166＠bellatlantic.net

> >Subject: Re: Reading NorthStar Horizon hard sector disks on PC > From: "Chuck Guzis" <cclist at sydex.com> > Date: Tue, 31 Jul 2007 09:18:41 -0700 > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On 31 Jul 2007 at 9:53, Dave Dunfield wrote: > >> Also, the N* disks are hard-sectored. This means that the controller >> needs to see the individual holes to know where each sector data >> starts. The PC disk controller has no means to aligning individual >> sector data to index holes, even if it could see the sector data. > >Not all Northstar diskettes are HS. One of the models (Advantage?) >isn't--and it's that format that the Microsolutions MatchPoint will >read, not the others. It's been too long since I've seen the darned >things... Error! Advanatge is the same format as the MDS [Aka Horizon) and does both SD and DD formats. Least mine does. I believe there was an aftermarket board that would fit the Advantage bus (non S100) to provide things like a soft sector FDC. There was also a hard disk controller. Allison > >Cheers, >Chuck

19 years, 1 month

4
3
0 0

Macintosh LCII for sale

by marcbeck1982＠yahoo.com

I have two Macintosh LCII, including monitors, but no keyboard and no mouse. I live in Owensboro, KY. I would sell them for $20 a piece, buyer pays shipping costs and they are sent COD. Marc Beck --------------------------------- Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out.

19 years, 1 month

1
0
0 0

newbie building a scratch-built computer

by classiccmp＠memory-alpha.org.uk

Hi, > If you want to work in a world where assembly language >programming and optimizing for every single byte of code >or memory utilization still counts, get into the embedded >systems world. Errm, that's the world I got OUT of in 1991 when the company I was then working for was taken over and shut down. Sadly, since then, the only embedded systems jobs I've seen advertised in the UK have been from companies like Motorola and require C/C++ experience (and as you mention, Java!). Not to mention they'd require me to move halfway across the country to areas I wouldn't want to live in (due to the cost of living down there). > A lot of (clueless) companies want their embedded code written >in Java or C++ or such foolishness, but really, if they're really >that stupid, you don't want to work for them anyway. Amen to that. Talking of stupidity, the company that took us over did so, at least in part, because our products were far more technically advanced than theirs (we designed our new products from scratch, they just regurgitated the same (by then) 10 year old design ad nauseum with minor tweaks). They wanted our design team....what they actually got was our technical director. Those of us who'd actually done the design work were sacked shortly after the production department (needless to say, the sales department were the first up against the wall). <A little later> Spurred on by writing this message I went and had a look at said company's website, alas it appears *NOTHING* has changed! They're still selling their original, now 27(!) year old, design in a more contemporary housing with updated software. Not to mention that at least 2 of their other products (including their "most popular" terminal) are the ones I worked on 16 years ago (although again with upgraded housings and software)....well, at least I did something right, once.... ;-) TTFN - Pete.

19 years, 1 month

1
0
0 0

UK VCF?

by classiccmp＠memory-alpha.org.uk

Hi, > That isn't the point, Pete. The point is: everyone knows the >VCF is Sellam's thing and it would be really lame for someone >else to make an event and call it a VCF.... I wasn't suggesting otherwise....I was simply pointing out that trademarks do not apply worldwide unless specifically registered as such (and even then there are difficulties). Why so defensive? TTFN - Pete.

19 years, 1 month

1
0
0 0

UK VCF?

by evan＠snarc.net

Rubbish! Hans and Pat and I all do just fine. For every person who dislikes Sellam's style, you will find many more who love that crazy SOB.

19 years, 1 month

1
0
0 0

Fast MBus modules

by compoobah＠valleyimplants.com

> > I picked up a pair of SM91-2's on eBay years ago. They do indeed > work in > > an SS20 -- for a while. Then I think the heat catches up with them... > > Every time I installed them (I must've tried singles and pairs) it > would > > be fine, I'd go do something else, and I'd come back to a locked up > machine. > > > > I have had the same experience with 80MHz CPUs in my SS20. I finally > had > to settle for 2x50MHz and some stability instead. > > Steve Hmm- anyone managed to get the SM81s to work reliably in a SPARCstation 20 SMP? I have a SS20/2xSM81 as my SMP Sun- haven't used it much yet but if in general they have stability issues I should probably do something else.

19 years, 1 month

7
12
0 0

IBM 6094-020 Lighted Program Function Keys

by mbbrutman-cctalk＠brutman.com

I'm getting a little closer .. I have the power adapter now and the correct cabling. This device communicates over the serial port, but I have no idea how to talk to it, and I haven't even been able to get it to transmit noise on the serial port to the host PC. (I've tried a variety of bps rates.) Does anybody have IBM book SA23-2646-01 "Hardware Technical Reference: Options and Devices" ? The protocol for speaking to this thing might be in there ... If anybody else has one connected to a PC RT or an old AIX box, it would be possible to reverse engineer the protocol by tapping the serial cable and watching what comes across. It's a neat looking piece of hardware - 32 buttons, each having a controllable indicator light. But I'm getting grumpy because I have no idea how to feed it. :-( Thanks in advance, Mike

19 years, 1 month

9
18
0 0

Micropolis 1303

by silvercreekvalley＠yahoo.com

Anyone with a Micropolis 1303 for sale/trade? I have one which is just not working correctly. The heads will not track so I'm guessing its a head crash. I tried some other MFM disks, but they dont seem to be the right type. Looked on ebay and saw some ridiculous pricing, so hopefully someone has a spare somewhere? In terms of trade, I have a large collection of PDP 11 spares (PSU's, bus cards, front panels, wiring, switches, etc). Also more recent stuff (Atari/Acorn) if interested. All the best Ian. ____________________________________________________________________________________ Moody friends. Drama queens. Your life? Nope! - their life, your story. Play Sims Stories at Yahoo! Games. http://sims.yahoo.com/

19 years, 1 month

2
1
0 0

PERQ T2

by silvercreekvalley＠yahoo.com

I've got a PERQ T2 which was working until fairly recently. It seems the boot track on the hard disk (Micropolis 1303) is damaged in some way so the PERQ wont boot. I have a floppy boot disk which is known to be good, but unfortunately the PERQ T2 doesnt want to boot >from floppy. SHIFT-A doesnt work on the T2. Is there any way I can force the T2 to boot from floppy? Just a few other points, when switched on the HD LED remains on all the time. I'm assuming the drive is attempting to seek the boot track. Ultimately the PERQ times out with code 013 which means HD time out. Thanks Ian. ____________________________________________________________________________________ Shape Yahoo! in your own image. Join our Network Research Panel today! http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7

19 years, 1 month

2
1
0 0

PS/2 Model 25 repair info?

by trixter＠oldskool.org

I've got an IBM PS/2 Model 25 that I want to put into use as an infrequently-used terminal using its serial port. I have a few questions and was wondering if someone could give me a hand: - Is there IBM PS/2 Model 25 tech and/or repair specs online somewhere? I figured out how to open the back up, but that just gets at the ISA slots. I need to get at the floppy drive; I want to know what some of the 40-pin male connectors are; etc. Which leads me to my next question: - The floppy drive is toast. Can I replace it with any regular 3.5" HD drive, or is it unconventional in some way? - The embedded monitor is ailing (it's dim, and white has a bluish tint leading me to believe that the red and green guns are giving out). Is there any way to fix that without jumping through hoops, or is it (no pun intended) terminal? -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

19 years, 1 month

6
11
0 0

Next Cube Parts needed

by g-wright＠att.net

Hi, I'm trying to get a MONO Cube I have here back to a complete box. Missing is the - Floppy Drive 2.88 Sony and Bezel - mounting Bracket for the Drives ??? The large piece above the Power Supply is there. I would guess it had something to hold the 3 1/2 drives. - no Optical drive or cover. Not Sure it had one ?? - no expansion slot covers. Rear cover is there. - mouse is missing This is a 68040 25 built is 1991 Looking into the 2.88 floppy it looks like there was no standard for the connection on the different makes. So either I have to use a sony or make a adapter Thanks, Jerry Jerry Wright JLC inc

19 years, 1 month

1
0
0 0

working scale models (was Re: (no subject))

by ethan.dicks＠gmail.com

On 7/31/07, Bill Sudbrink <wh.sudbrink at verizon.net> wrote: > My wife does doll houses now and then. I have wondered whether a > fully functional (front panel, that is) 1/12 scale IMSAI would be possible. > Z80 processor, 64K RAM, maybe a few interesting front panel programs > in ROM... flip the bit, cylon eyes, simple count up/down. Run on a > watch battery. Hmm... A real IMSAI is what, 10.5" tall, 19" wide, and about 24"-36" deep? That sounds difficult to reproduce at 1/12th scale, but it might be possible to replicate an IMSAI front panel with fiber optics, run them under the floor of the doll house to a hidden Z-80 board (that could still be done with a lot of SMT to make it small). It comes to mind that a microSD card is on the close order of the dimensions of a 1/12-scale 8" floppy ;-) (2/3" x 2/3") -ethan

19 years, 1 month

6
5
0 0

Needed: XMI DSSI interface

by pat＠computer-refuge.org

[Cross-posted from the rescue list] In the quest to get my new VAX 7640 up and doing something useful, I'm looking for an XMI DSSI card and cab kit for the system, so that I can have *some* physical media on the machine. I've got a bunch of random DEC stuff available for trade, including some XMI CI interfaces which I doubt I'll ever use (famous last words), QBUS stuff, Alpha stuff, etc. etc. Or, cash. I mostly want to avoid spending the $big_num that ebay sellers want for the stuff. Pat -- Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/ The Computer Refuge --- http://computer-refuge.org

19 years, 1 month

1
0
0 0

UK VCF?

by RodSmallwood＠mail.ediconsulting.co.uk

Perhaps our friends at Bletchley Park might be interested ? Rod Smallwood -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Rob Sent: 31 July 2007 14:46 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: UK VCF? On 31/07/07, Simon Fryer <fryers at gmail.com> wrote: > > I think there would be a lot of interest. The initial stumbling block > so far appears to be finding someone to organise it. Agreed - I am sure this has cropped up on the list before, too, with the same conclusion. Venus shouldn't be a problem; there are plenty of possibilities about, ranging from sports halls to places the size of the NEC; although you'd need big pockets for the latter.. Just pick a size and go from there..

19 years, 1 month

1
0
0 0

Fast MBus modules

by compoobah＠valleyimplants.com

Oops- sent to the wrong list.

19 years, 1 month

1
0
0 0

Roland CM-500

by ploopster＠gmail.com

Anyone know where I can get a Roland CM-500? Also, does anyone know if there was ever a fully MT-32 compatible card for the Wave Blaster interface? I'm upgrading my DOS gaming box. Peace... Sridhar

19 years, 1 month

1
0
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb