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101090 discussions

What's the point of USB keyboards+mice = Re: EPROM and EEPROM

by technobug＠comcast.net

On Sat, 5 May 2012 21:24:19 +0100 (BST), ard at p850ug1.demon.co.uk (Tony Duell) wrote: >>> And why is this a Good Thing? My point is that it's to be exptected that >>> a modern PC will have a keyboard and mouse connected to it. Why does it >>> make any difference to the used if those can be connected to 2 of the USB >>> ports or to 2 specific connectors for them? >> >> You've already asked that. > > Yes, and I still haven't received an answer. > >> >> NOW imagine that a whole bunch of unforeseen devices - printers, >> cameras, touch sensitive tablets, disks, modems, e-book readers, 'pen' >> drives, portable audio players, ... - arrives. Are they meant to use >> PS/2? Are they supposed to have individual connectors? USB is no more a >> silly idea than RS-232 is. > > That is NOT WHAT I AM ASKING ABOUT. I sam specifically considering only > keyboards and mice. I happen to think that USB is a useful interface in > some situations, for example for external memory devices. That doens't > mean I have to think it's the best interface for all applications no > matter what marketroids may claim. Consider the computer in front of me. There is a keyboard, a mouse, a trackball, and a Wacom Inkling all plugged in and active using USB. How do you do that with only two ports? I use the trackball and occasionally the tablet. Another user uses the mouse and the tablet. All without unplugging and plugging the various devices... ->CRC

14 years

seattle jabber

by dgriffi＠cs.csubak.edu

I was wondering if there's anyone in Seattle who wants to meet up and talk about random stuff. I'm up here from Bakersfield for an interview. -- 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?

14 years

DEC Professional 350 Fault

by robert.jarratt＠ntlworld.com

The DEC Pro 350 I got came without a monitor, cable or keyboard. When I power it up the diagnostic LEDs on the back all come on. The docs I have suggest this means a system board error. However, I am not sure if this is because there is no monitor or keyboard attached. Might this behaviour be expected if I don't have anything connected to the video connector? I tried connecting a terminal to the serial port just in case something happened there, but I don't see anything. Does the Pro 350 use the serial port as any kind of console port by any chance? I suspect not. I am trying to identify what cable I need. I think it is a BCC02, but if it is a colour machine it would be a BCC17, but I don't know how to tell if this is a colour machine or not. There also seems to be a BCC03 cable used on Rainbows, anyone know if that would work? Regards Rob

14 years

GlobalView for X

by bojan89m＠aim.com

Hi Mike, I know that's old stuff, but I like. Do you know where I can find GlobalView for X, because links on corestore are so dead. If you still have it I would be thankful if you can send it to me. Thank on future answers and actions. Best regards

14 years

VCF-East?

by mcguire＠neurotica.com

VCF-East is this weekend, and it's shaping up to be QUITE an event! Who's going? -Dave -- Dave McGuire, AK4HZ New Kensington, PA

14 years

MicroSD: one good ripoff deserves another / Iomega Zip's

by jonas＠otter.se

Tony Duell wrote: > Well, I'd rather pay more for some good enegineering, like > differential > inputs and outputs (which will reduce common-mode noise signals for > good > engieerign reasons that I can understand) that pay for good-lated > fuses, > carpet groudnign clips, special mains cables, etc that have no > science or > engineering behind them. > Note that merely having differential inputs and outputs doesn't solve all problems, you have to know what to do with them as well: http://www.douglas-self.com/ampins/balanced/balanced.htm (Douglas Self is or was the head designer at Soundcraft and is a well known writer on audio, he has written a lot in Wireless World/Electronics World) /Jonas

14 years

Wanted: Apple Keyboard Encoder MM5740AA/E

by pye＠mactec.com.au

On May 2, 2012 at 11:18 AM Pete Rittwage <peter at rittwage.com> wrote: >> Any interest in an module that replicates the /E functionality? >> >> (or, maybe there is already such a thing) >> >> Jim >> >> >> -- >> Jim Brain >> brain at jbrain.com >> www.jbrain.com >> > > Not quite yet. Mike Willegal has done pin mappings to use an AVR as a > drop-in replacement, but hasn't written any software yet. Would Vince Briel's Super Encoder do this function? http://www.brielcomputers.com/wordpress/?p=343 Chris

14 years

Pictures of an KDF11-BF??

by holm＠freibergnet.de

Hi, I've got an BA23 Box with an M8190-AB lately (from Henk, special thanks to you!). The M8190-AB should be an KDJ11-BB 11/73 CPU. I have an MSV11-JE (M8637-E) PMI Memory Card too and I'm wondering if I can use them thogether.. As far as I've read it should be possible if I put the memory below the CPU, using it as plain Q-BUS memory this way. Can anyone confirm this? What will happen if I put the Memory board at top in the PMI Order? What are the differences from the KDJ11-BB to the KDJ11-BF? Are there pictures to look at somwhere on the net? All I have found for KDJ11-BF with google is exactly looking like my 11/73 CPU Board.... Kind Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

14 years

EPROM and EEPROM Programmers

by ethan.dicks＠gmail.com

> Eric Smith wrote: >> ? ?Bill Sudbrink wrote: >> > Data sheet claims pin compatibility with 2732. >>> >> It claims that it is "pin compatible with existing ROMs and >> EPROMs (8K, 16K, 32K and 64K)", but that does not include the >> 2732, and their reference to 32K and 64K was only in regard to >> ROMs. > >> The TMS2532 is most definitely *not* pin compatible with 2732 http://www.atarimagazines.com/compute/issue11/69_1_ROM_EXPANSION_FOR_THE_CO… The 2532 _is_ pin-compatible for reading in a PET socket that's expecting a 2332 masked-programmed ROM. I've had several 2532s in my PET 2001N-32 (US version of the 3032) since the late 1970s, no adapter. These days, it's easier to build an adapter than find real 2532s. -ethan

14 years

EPROM and EEPROM Programmers

by dm561＠torfree.net

----- Original Message: Date: Mon, 30 Apr 2012 12:46:30 -0400 From: Keith Monahan <keithvz at verizon.net> To: cctalk at classiccmp.org Subject: Re: EPROM and EEPROM Programmers > I want something that connects to my computer like all my other devices. > Something that does not require anything special. > A USB eeprom burner that I can use on any of my current desktop/laptop > computers is what I want. ---- Well, by golly, then that's what you should get; lots of them out there! I generally find that when I have a round hole it's easier to find a round peg instead of complaining about the corners on the square ones ;-) I actually find an RS-232 serial interface the most flexible in terms of machines I can connect it to, including through a USB <> serial adapter if necessary. I take it that "*all* your other devices" must be less than 15 years old then, so what brings you to the Classic Computer List? ;-) Ironic that folks on the "Classic" computer list don't even have a machine with a serial or parallel port; I built programmers for both my PET and my AIM65, not much more than a connector and a socket since like many classics there were lots of available I/O pins, but from this discussion about programmers it seems that actually _using_ a classic computer for something useful isn't very common... m

14 years

Wanted: Apple Keyboard Encoder MM5740AA/E

by peter＠rittwage.com

> Date: Tue, 01 May 2012 19:30:22 -0500 > From: Jim Brain <brain at jbrain.com> > To: General Discussion: On-Topic and Off-Topic Posts > <cctalk at classiccmp.org> > Subject: Re: Wanted: Apple Keyboard Encoder MM5740AA/E > Message-ID: <4FA0801E.3060107 at jbrain.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 5/1/2012 12:43 PM, Pete Rittwage wrote: >> Hi guys, >> >> I apologize if this isn't the place for this... >> >> These come up on eBay every so often, but they are untested or I miss >> them. Does anyone have any spares of this old chip? I've got an old >> Apple II that I'd like to use the regular keyboard instead of a PS/2 >> adapter. >> >> I purchased some of the "C" variant (MM5740AA/C) some time back, but >> they >> have a different key mapping than the Apple computers. If someone needs >> those I can post for free or trade. I have no idea what keyboard they >> were used in. >> >> - >> Pete Rittwage >> Augusta, GA, USA >> > Any interest in an module that replicates the /E functionality? > > (or, maybe there is already such a thing) > > Jim > > > -- > Jim Brain > brain at jbrain.com > www.jbrain.com > Not quite yet. Mike Willegal has done pin mappings to use an AVR as a drop-in replacement, but hasn't written any software yet. - Pete Rittwage C64 Preservation Project http://c64preservation.com

14 years

fyi... ebay changed all the computer categories

by legalize＠xmission.com

Not sure when they did this, but they changed a bunch of categories in the computers section. So if you had saved searches, check them to make sure they are still finding the correct things. For instance, I had a search for dials boxes and button boxes. A new item was listed (sgi dials box) that this search used to find, but doesn't find anymore because the category it was searching no longer exists. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

14 years

another HP2100 on govliquidation

by shumaker＠att.net

The 2 HP 2100's from GovLiquidation arrived a few weeks ago in incredible shape (after waiting some 8 weeks for DLA to decide I'm OK to acquire a weapon system component.....) Anyway, for anyone interested. there's another one listed - this time in Oklahoma. The title shows it as an "HP 21005 microprogramming systems computer" but it's clearly the HP 2100s mini in the photos! Event ID is 10728 Item No is 1510 Unit appears in good shape and already has a heavy duty shipping carton.

14 years

Wanted: Apple Keyboard Encoder MM5740AA/E

by elson＠pico-systems.com

Date: Tue, 1 May 2012 13:43:30 -0400 (EDT) From: "Pete Rittwage" <peter at rittwage.com> To: cctalk at classiccmp.org Subject: Wanted: Apple Keyboard Encoder MM5740AA/E Message-ID: <52999.10.2.0.194.1335894210.squirrel at rittwage.com> Content-Type: text/plain;charset=iso-8859-1 Hi guys, I apologize if this isn't the place for this... These come up on eBay every so often, but they are untested or I miss them. Does anyone have any spares of this old chip? I've got an old Apple II that I'd like to use the regular keyboard instead of a PS/2 adapter. I purchased some of the "C" variant (MM5740AA/C) some time back, but they have a different key mapping than the Apple computers. If someone needs those I can post for free or trade. I have no idea what keyboard they were used in. I have an MM5740AAC/N which I used to keep an industrial control working. It hasn't been turned on in 13 years, but ought to still be good. The key codes are in the data sheets, which ought to still be searchable online. I made an adaptor board that plugs into the MM5740 socket and recodes for the funny char sequence that that particular machine used. It uses a 2732 as the code translator. Jon

14 years

Wanted: Apple Keyboard Encoder MM5740AA/E

by peter＠rittwage.com

Hi guys, I apologize if this isn't the place for this... These come up on eBay every so often, but they are untested or I miss them. Does anyone have any spares of this old chip? I've got an old Apple II that I'd like to use the regular keyboard instead of a PS/2 adapter. I purchased some of the "C" variant (MM5740AA/C) some time back, but they have a different key mapping than the Apple computers. If someone needs those I can post for free or trade. I have no idea what keyboard they were used in. - Pete Rittwage Augusta, GA, USA

14 years

EPROM and EEPROM Programmers

by technobug＠comcast.net

On Mon, 30 Apr 2012 18:19:44 -0700, Eric Smith <eric at brouhaha.com> wrote: > CRC wrote: >> and also failed until he looked at the schematics for his unit and >> found yet another pin out for what appeared to be a 2716 equivalent. >> The PROMs in question are NEC2316 about which information is unobtainium. > > I think you're referring to the NEC ?PD2316E, which isn't a PROM. It's a > masked ROM. NEC's masked ROM business came from their acquisition of > Electronic Arrays, and the NEC ?PD2316E was originally the EA8316E, so > you can find data in either an EA databook, or an early NEC databook, > such as the 1982 NEC Catalog. Nope - It's a windowed, ceramic chip with the markings clearly NEC2316... ->CRC

14 years

Gone extinct

by jchausler＠earthlink.net

No software for a 6809??? What about FLEX and UniFLEX from TSC for an OS and Stylograph for a word processor not to mention Dynacalc for a spreadsheed and numerous BASIC's, editors, assemblers, disassemblers, diagnostic tools, etc. I still have a 6809 system which runs FLEX with both Stylograph and Dynacalc and many other things running with two 8 inch and two 5 1/4 inch floppies just fine... 73, Chris Hausler >> Home computing never took off until the software industry exploded. >> There are tons of computer models like the ADAM and my Timex 2068 that >> never went anywhere because there was little software available for the >> masses. Plenty of people had computers before the 80's, they just tended >> to write their own software as needed. > >I tend to think the lack of floppy disk with a real OS , killed the 8 >bitters >out there. I was just looking at some old mags from the 80's,PC DOS and >CP/M was it for general purpose OS's. I wanted to get a 6809 machine >back then, but I could not find software to with the hardware. >Ben.

14 years

Gone extinct

by c.murray.mccullough＠gmail.com

I came across some interesting reading the other day in a library book that I'm sorry I can't remember its name. It essentially said: Can one subscribe to the theory that vintage computers, such as the Coleco ADAM, went extinct because they used cassette drives where one spent more time finding information and recording such which greatly slowed down processing thereby defeating the purpose of electronic computing? I?m not sure if this applied to floppy drive systems but computing never really took off until hard drives came along in the 16-bit world, i.e., the mid-80s! Classic computing aficionados, particularly on this site, may have a different take on things. Murray--

14 years

OT: cipher machine on Ebay Hagelin

by jws＠jwsss.com

pricy, at $7,000, but for such a machine that is cheap. HAGELIN C-362 CIPHER MACHINE http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160783096486 May be a bit off the classic computing theme, however the deciphering equipment is classic cmp. thanks Jim

14 years

EPROM and EEPROM Programmers

by technobug＠comcast.net

On Mon, 30 Apr 2012 16:18:24 -0400, "Bill Sudbrink" <wh.sudbrink at verizon.net> wrote: > > Eric Smith wrote: >> Bill Sudbrink wrote: >>> Data sheet claims pin compatibility with 2732. >> >> No, the TMS2532 doesn't make any such claim. > > Interesting. Thanks for the correction. > >> It claims that it is "pin compatible with existing ROMs and >> EPROMs (8K, 16K, 32K and 64K)", but that does not include the >> 2732, and their reference to 32K and 64K was only in regard to >> ROMs. > > So, the 2532 predates the 2732? Interesting that they revised > the data sheet until 1982 without clearing that up. > >> The TMS2532 is most definitely *not* pin compatible with 2732 > > I see that now. I must remember that data sheets are at least > partially products of the marketing departments. Sigh... > > Bill S. To totally confuse the situation, the TMS2716 in not compatible with the Intel 2716 whereas the TMS2516 is, The TMS2732 is industry standard whereas the TMS2532 is not. This goes back to the time when the industry was sorting out what was going to be standard - one should be extremely careful when choosing, changing, or programming PROMs of this vintage. I just went through a learning process with a piece of failed HP test gear where a PROM failed. The unit had 2716 equivalents. I borrowed a friend's unit and attempted to read his PROMs and failed. An individual on the HP equipment list attempted to do the same and also failed until he looked at the schematics for his unit and found yet another pin out for what appeared to be a 2716 equivalent. The PROMs in question are NEC2316 about which information is unobtainium. -> CRC

14 years

discrete transistor computer

by elson＠pico-systems.com

A while ago somebody mentioned thinking about building a discrete transistor computer. I ran across the link again of the one I saw (only online) http://www.6502.org/users/dieter/mt15/mt15.htm With all SMT, he packs the boards very closely, performance is of course not so great with discrete junction transistors running in saturation. Jon

14 years

ibm funky 3 1/2 inch disk

by stefan.skoglund＠agj.net

i have one of the IBM:made minidisk ? (looks a bit like a normal 3-1/2 inch floppy) drives. Any source for disks ?

14 years

EPROM and EEPROM Programmers

by fraveydank＠gmail.com

On Apr 30, 2012, at 3:34 PM, Bill Sudbrink wrote: > Dave Wade wrote: >> I have some "TMS2532" chips. Any suggestions on how to program them (I >> have a project in mind that will need these or a similar device) > > Data sheet claims pin compatibility with 2732. I would start there. Er. Electrically compatible, *maybe*, but the pinout is different enough that they're definitely not interchangeable. Defender uses a bunch of 2532s, which is unfortunate because they're a lot harder to find than 2732s. If you're looking to get rid of 'em, I'll gladly take them off your hands for a reasonable price. For new projects, find some 2732s; they're a lot easier to find (and thus cheaper) and enjoy wider programmer support. - Dave

14 years

Subject: Re: Gone extinct; From: Fred Cisin <cisin@xenosoft.com>

by c.murray.mccullough＠gmail.com

On Sat, 28 Apr 2012, Murray McCullough wrote: > I came across some interesting reading the other day in a library book> that I'm sorry I can't remember its name. It essentially said: Can one> subscribe to the theory that vintage computers, such as the Coleco> ADAM, went extinct because they used cassette drives where one spent> more time finding information and recording such which greatly slowed> down processing thereby defeating the purpose of electronic computing? Now I'm wodering, could the conveniently non-attributed "came across some interesting reading" question may not have been disingenuous, and somewhat rhetorical? I have never considered the Coleco Adam to have ANY historical significance, and tend to assume that any mention of it is an attempt at comprehensive completeness, or personal fondness. Yet, it turns out that C. Murray McCullough is the author of a history about microcomputers. On the cover of it, he gives Adam a position of greater importance than the others that he mentions: ADAM (in ORANGE, the others are in white) APPLE II TRS-80 MODEL I ZENITH HEATHKIT In the index (I could not get Amazon's "Look Inside" to show me any of the text past the Preamble, which doesn't get to the time of microcomputers),He has 25 entries for "Adam", enormously disproportionate (12 for "Commodore" PLUS 6 for "COMMODORE", 2 for TRS-80, . . . ) Dare I guess what Murray's first computer was? (Baby duck syndrome?) Nevertheless, the writing style looks intersting, and I may seek out a copy. "JPL (Job Control Language)"??!? ************************************************************************************ With unlimited stars in the universe so there seems to be an unlimited opinion on when things started & where & by whom in the microcomputer universe. (There is no consensus on what a microcomputer is!) Corporations, individuals protect valuable information and certain knowledge that is never made public. We can only hope that inaccurate information from these sources doesn?t occur. I came across the book in the Toronto Reference Library and I seldom get there because of the distance from my farm. I did not copy the name of the book or authour down and this is a serious error on my part. There was no disingenuosity on my part and in no way was it my intention to denigrate the book or authour. A reasoned argument around mustered facts, as was present in this book as far as this reader was concerned, cannot easily be dismissed nor ignored. I did write a book on the history of microcomputers ? A Historical Research Guide to the Microcomputer. ( Many thanks for mentioning it. ) It was on the early years of micro-computing up to the arrival of the IBM PC. I?ve been a member of the (Coleco)ADAM computer convention organization since 1989 and this was why I highlighted the computer in my book. I do indeed have a personal fondness for a computer Coleco abandoned and was taken up by die-hard followers. [ BTW my first computer was the Heathkit which I spent many an hour assembling, debugging and trying like the devil to get working! And what an expensive computer to buy in Canada. ] As Grumpy Ol? Fred wrote -> Because we have an interest in the computers that existed before y'all cared and/or we REALIZE that we came in late, and we're INTERESTED in what had already been happening. OR we're just a bunch of old farts who wish that we could go back half a century. <- To be involved in the early years of micro-computing I consider myself privileged but possibly cognition and memory are getting fuzzy. It?s not a reason to justify what I?ve written, errors committed, but may explain it as an excuse! Murray--

14 years

EPROM and EEPROM Programmers

by dave.g4ugm＠gmail.com

On 30/04/2012 20:34, Bill Sudbrink wrote: > Dave Wade wrote: >> I have some "TMS2532" chips. Any suggestions on how to program them (I >> have a project in mind that will need these or a similar device) > Data sheet claims pin compatibility with 2732. I would start there. > > My Willem, when powered correctly and strapped for 2732 seems to do > a 21 volt VPP. The TMS2532 data sheet says it wants 25. I don't know > if you can get away with that or not. You may want to spring for some > 27c32 chips. They have a 12.5 volt VPP and I've done lots of them on > my Willem. > > Bill S. > Thanks Bill, The clone Willem's look cheap enough to buy one to experiment with, even in the UK. I think I might just order one and give these a whirl. Dave

14 years

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