test-drb April 2013

test-drb@ccmp.vtda.org

205 participants
273 discussions

by tom_a_sparks＠yahoo.com.au

> >>? I am looking for a daisy wheel printer to buy >> > >> > An odd thing to desire.... >> not really, > >Wel, OK, I regater old computer periphearls as being interesting, but far >too many people think that the CPU is the only bit worth colelcting. > >> I already have two pen plotters (Desktop and cutter) >> I've ordered a dot-matrix printer > >s an? aside, I regard injet and laser printers as being dot-matrix... > yea, but they are not impact based One of those 4-colour pritner/ploters using the Alps mechanism. Everybody >and his dog sold them at some poitn -- Tandy CGP115, Commodore 1520, >there was an Atari oen, a Sharp one, theOric printer, etc. > my Roland plotter has 8 pens slots (DXY-1300) the other plotter is a papercraft cutter -tony >tom PS:? I am using them for art projects

12 years

not exactly true vintage...

by sales＠elecplus.com

I have a PlayStation 1 and PlayStation 2, each with 1 controller, both tested working. $100 plus shipping takes them both home. Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3272 / Virus Database: 3162/6237 - Release Date: 04/10/13

12 years

pdp-11/23 config

by Arno_1983＠gmx.de

allison <ajp166 at verizon.net> wrote: > > On 04/09/2013 12:08 PM, Arno Kletzander wrote: > > I'm not sure what I'd need it for? There is no other system within walking distance that would understand the floppy format natively. > > Any file I/O thus most likely will happen across the Internet (involving a PC anyway), so I hoped I'd be fine with the TU58 emulation software discussed below. > > I use the PC to make floppies (RX50, RX33 and RX23) and my S100 CP/M system will do RX01 transfers. > But, I have multiple Qbus 11s and most all have floppies so portability between them is handy. (or a 50ft serial cable). > >> If anything the floppy is always a must on my systems as all my diags and > >> base RT11 systems are on that media (RX01, RX02, RX50, RX33, RX23). > > Are they also available in TU58 (file) format? > Generally yes. TU58 file format is variable in that the device appears to the system as > a blocked volume like disk (though slower). The transfer between the TU58 and > its host is serial data and the host request block(s) N and not that > much different than IDE or other intelligent disk system that uses a logial block numbering > system. The tu58 does not know nor care what is in the 512 byte block. I've run CP/M from TU58. ok, then TU58 emulation is, as I had hoped, going to float the boat for me, at least until either more machines or media to be read crop up here. > >> A viable uVAX is more than 150mb, (more like 300-500 for V7), > >> a loaded PDP11 is 30MB. Just difference is OS utilization. > > So I guess it all boils down on what one wants to run on it. > > I've got one functional RD53 in it right now, and a second one I hope to revive at some point in the future. > > Thats plenty of space for PDP-11 OSs. Unfortunately I have no sound way to (mechanically) _mount_ and power those tiny little 5,25" disks in the '11 rack, that's why they're staying in the BA123. I forgot the 300MB ESDI disk I got from a listmember together with a Webster Qbus controller, I'll use that one if I ever want to run a large OS on the VSII. > Likely the bad one has the stuck head problem > easy to fix. just upen it up and unstick it. There are more detailed instruction out there. > I'v edone it many times and forget the whole you need a clean room thing, My first > salvage is near 25years old now. I'd not want to try my luck, I'll work on that one once I've got an aquarium type glove box set up. [large drives] > You can till you have to format or defrag it. I keep a stack of sub 1gb > (from 50mb and up) SCSI drives for that reasonas well as a major > heap of MFM drives (St412s 10mb, St225s 20mb and Quantum > D540s 31mb). I just insert them and image copy to them as backup. OK, seems we mixed up logically and physically large drives here. I have about none of the first, but several of the latter category amongst those in question for the machines we're discussing here: 1(2)x RD53 5,25" MFM 1x 300MB 5,25" ESDI, 3x 5MB 14" RL01, 1x 10MB 14" RL02, (2x 80MB 14" SMD) (I just have a lead on those yet) [TK50 tape subsystem] > I meant save it for backups or other large data needs as running diags > off it will be painfully slow. If its bad save it for parts, they are scarce, > usually the controller is fine and the drive is borked. Understood. I'll find out once I have a drive and media for it. > I've also already found out that the memory board I'll be getting is 512k_Bytes_ (256kW) and does _not_ have BBU support. ?? BBU?? Unless you mean BBS7 (Io tends to use that). Battery backup. Feeding it from an alternate 5V source to keep RAM content intact when mains power is off. > One last thing... > > Heat! Qbus 11s produce a bit of that. That means fans must all work, > the location must not be dusty enough to load up the boards and local > temperature not excessively hot. > I fried a 11/23 board while working at the DEC Mill when they had an air > conditioner fail for the office area, when the room hit 96 (36c), cpu > went away, I had plenty of spares. So reliability and room temps are > coupled. Qbus 11s are fairly tolerent of conditions but any you find > are going to be old and may not like additional stress. A hard "CPU dead" damage without any warning? That's bad. Good to know anyway, makes me want to add a system monitoring function (temp and air flow) for emergency shutdown. Maybe something to design a CD slot board for after all ;), at least before I'll run the machine unattended. I also forgot something: I myself wouldn't have thought of putting a NIC (DEQNA or similar) in a pdp-11, probably just for the notion that back in those days, computers were too few and far between to come up with the concept of a Local Area Network. Obviously I was mistaken here, too. Arno

12 years

Tech is the biggest problem facing archiving • The Register

by woyciesjes＠sbcglobal.net

And interesting (and seemingly straight-forward) article about issues we face & discussed: Tech is the biggest problem facing archiving Mountains of unreadable obsolete magnetic tapes! By Chris Mellor http://www.theregister.co.uk/2013/04/03/archive_technology_problem/ -- --- Dave Woyciesjes --- ICQ# 905818 --- AIM - woyciesjes --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ Registered Linux user number 464583 "Computers have lots of memory but no imagination." "The problem with troubleshooting is that trouble shoots back." - from some guy on the internet.

12 years

FS: Huge Lot of Vintage Computers- Local Pick up preferred in Flushing Michigan

by slandon110＠gmail.com

Due an unexpected loss of my vehicle and to help with moving expenses I must sell off a good chunk of my collection. I cannot accept PayPal, my account was hacked and overdrafted and PayPal refuses to help. Postal Money Order is acceptable, But if you can come out and get machines that would make life quite easy for me. Best reasonable offers accepted The more you buy the cheaper it gets Complete Systems Apple IIGS ROM 01 with Monitor, Keyboard, Mouse, 3.5 Drive, 5.25 Drive, 1MB RAM Expansion, 80MB HDD and SCSI Card $200 IBM PC 5150 256K RAM, 40MB Hardcard, Ethernet Card, Sysdyne RGB Monitor, Keyboard and All original boxes $200 Atari ST520FM, Rough Shape but working Comes with TOS 2.0 ROMs not installed 52MB HDD and Mouse included. The 52MB HDD has an ACSI TO SCSI Adapter in it, so you can use SCSI Devices with the Atari $100 Apple II Plus System Monitor /// with matching monitor stand Dual Disk II Drives Saturn 128k RAM Upgrade Card Super Serial Card Microsoft Softcard Z80 Card ThunderClock Plus Clock Card $250 Apple //e system Apple Color Monitor //e Super Serial Card 64k 80 Col Card Apple 5.25 drive $75 Apple //e System Unidisk 3.5 Drive w/ Apple Liron Card DuoDisk 5.25 Drive Apple RGB Card with Color Monitor 100 Apple //e Workstation Card Apple Super Serial Card Microsoft Softcard Z-80 Card CFFA 3000 Card $300 dollars Apple //c machine ROM 0 Machine with Unidisk 3.5 Support Matching Monitor //c UniDisk 3.5 Drive $100 Bell & Howell Apple II Plus Matching 5.25 drive RCA 9inch B&W Monitor Hayes Smartmodem II 300 Baud Super Serial Card Microsoft Softcard Z80 Card $300 dollars All these machines are tested and working and are from my personal collection. Cheap accessories DaynaPort E/Z Serial To Ethernet Adapter for Mac- Puts your Serial based macs online $30 dollars MicroPrint 2, LocalTalk to Ethernet Bridge- Bridges your localtalk based macs to ethernet 50 pin SCSI Hard Drives, Sizes from 40MB to 500MB $10 dollars each, got hundreds of them These are 20 dollar an item machines. 10 Apple Monitor // 4 Apple Monitor /// 32 Cosmetically damaged IIGS Monitors 10 Nice GS Monitors 8 Mac IIcx 2 Mac IIci 3 Mac IIsi 5 Imagewriter I 3 Beige G3 Minitowers 2 G3 Desktops 5 PowerMac 6100s 1 Centris 610 1 Quadra 610 1 PowerMac 7300/180 1 PowerMac 7500/100 2 PowerMac 7100/66 1 Performa 600 1 Macintosh IIVX 4 Original LCs 3 LC 575s 1 SE FDHD 2 SE 800k 5 Mac Pluses 1 Molar Mac

12 years

The ten SEXIEST computers of ALL TIME * The Register

by amh＠POBOX.COM

On Tue, Apr 9, 2013 at 3:10 PM, Zane H. Healy <healyzh at aracnet.com> wrote: > Honestly, I'm really surprised by the list. I was surprised first by the > C-128, and even more surprised by the time I got to #10. I didn't take time > to see if they listed criteria for the choices, but I find the machines > selected to be odd. I for one would have put a BeBox in the list (and I've > never even seen one). I'd have likely also included the G5 PowerMac (and > current Mac Pro's) for their case. Surely the Connection Machine warrants a spot on that list, as well. -Andy

12 years

The ten SEXIEST computers of ALL TIME • The Register

by woyciesjes＠sbcglobal.net

Yes, 2 of the computers listed are not on topic (MacBook Air & Playstation 3, which is arguable if it's even a computer); one is barely on topic (Mac Cube). And there is only 1 big computer, the Cray 2. Still an interesting read. But I'm curious as to what others should be on the list? No bickering, we all know everyone has their own opinion... If possible, please include a link to a pic for me to enjoy.... :) The ten SEXIEST computers of ALL TIME Gorgeous kit that looks as good now as it did the day it came out http://www.theregister.co.uk/2013/04/09/feature_ten_sexy_computers_roundup/ -- --- Dave Woyciesjes --- ICQ# 905818 --- AIM - woyciesjes --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ Registered Linux user number 464583 "Computers have lots of memory but no imagination." "The problem with troubleshooting is that trouble shoots back." - from some guy on the internet.

12 years

looking for Daisy Wheel Printer

by tom_a_sparks＠yahoo.com.au

----- Original Message ----- >> I am looking for a daisy wheel printer to buy > > An odd thing to desire.... not really, I already have two pen plotters (Desktop and cutter) I've ordered a dot-matrix printer > >> >> I know I need one with a parallel/ Centronics port >> but what else should I get? > > There were quite a few models with RS232 interfaces (including some 'KSR@ > models with keyboards, effectively printing terminals). I would suggest > that if the model you want turns up with an RS232 prt ratehr than a > Centronics port, you grab it and eitehr link it to a serial port on your > host or get a parallel-serial converter. I suspect those are lot easier > to find than a partivular model of daisywheel printer. thanks for the info > > The famous models were the Diablo 630 and the Qume Sprint 5. Both are > prett soild. <snip> > > If possible get some spare Daisywheels and ribbons. The formerare > certainly not easy to get now, the latter may be getting rarer. ok, the supplies could issue :( I dont really need a daisywheel printer, but something like currently on ebay are trash-80/Atari daisywheel printers :( > > -tony --- tom_a_sparks "It's a nerdy thing I like to do" Child of the Internet born 1983 PGP ID: A7EF6006 Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks

12 years

H780 power supply

by bobvines00＠gmail.com

> Message: 9 > Date: Wed, 10 Apr 2013 03:46:39 -0700 (PDT) > From: Brian Roth <abacos_98 at yahoo.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk at classiccmp.org> > Subject: Re: H780 power supply > Message-ID: > <1365590799.18092.YahooMailNeo at web141406.mail.bf1.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > Thanks Dave, > > ?? I checked first with a load and then without. I have the main board out of it now so I was going to replace the transistors and caps. The problem is the schematics on Bitsavers is just a little blurry so I cannot make out the names and the transistors themselves(a few of them) are unreadable. > > Brian. Brian, I have a 174-page ~15.8MB PDF entitled ""1103_Schematics.pdf" that appears to be clear enough to read the H780 power supply pages (parts of the pages are blurry, but most areas seem to be readable). The PS schematics are drawing number D-CS-5411776-0-1, Rev. M, dated 7-22-77, and are three pages. I'll go ahead and send them to you (~154KB). Or I could email the whole 174-page file. Bob

12 years

Automated Paper Tape Punch on Ebay

by technobug＠comcast.net

<Blatant plug for a local scrapper> I was going through Southwest Liquidators back rooms and found an automated paper tape punch on a rack slated for recycling. I talked him into listing it (EPay 370793458493). The beast works. You punch in the code desired and hit perforate. The desired, lighted, programming buttons lock down (most of the bulbs are out) and release when the perforate button is hit. The power cord is new - definitely not original. The tops of the programming buttons are missing their legends? Sweet toy for anyone using paper tape. ->CRC

12 years

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test-drb April 2013