test-drb April 2003

test-drb@ccmp.vtda.org

272 participants
486 discussions

by melamy＠earthlink.net

the "blue" card sounds more like an arcnet card rather than ethernet. Ethernet would have a BNC and a AUI 15 pin DB type connector on the back. The arcnet card was a coaxial cable type connection. The blue really rings a bell asn well as the processor. I did a bit of work in the early day with arcnet before ethernet became the standard. best regards, Steve Thatcher >--- Original Message --- >From: "Witchy" <witchy(a)binarydinosaurs.co.uk> >To: <cctech(a)classiccmp.org>, <cctalk(a)classiccmp.org> >Date: 4/7/03 11:23:55 AM > > -----Original Message----- >> From: cctech-admin(a)classiccmp.org [mailto:cctech-admin@classiccmp.org]On >> Behalf Of John Honniball >> Sent: 04 April 2003 20:28 >> To: cctalk(a)classiccmp.org >> Subject: Re: IBM 5161 >> >> >> Witchy wrote: >> > A surprise consignment arrived for me this morning - an IBM >> 5150 in not bad >> > condition complete with keyboard/monitor and a 5161 expansion box, spare >> > expansion card and 2 extender cables..... >> >> Just had a look at the images on the Binary Dinosaurs site, and I see >> that you have a blue, full-length card with an 8X305 on it. This is >> a bit-slice CPU chip, so I'm curious as to what this card is. Does >> anyone recognise it? > >It's a *something* Decision card, complete with a BNC port......I really >should've noted it's name as it struck me as odd, as well as the size of the >CPU; still, the machine is easily accessible downstairs so I can dig it out >tomorrow and photograph it properly. Could it have been ethernet related? >There's KA9Q software on the HD in the expansion too, which is why I think >that. > >More info tomorrow :) > >cheers > >-- >adrian/witchy >www.binarydinosaurs.co.uk - the online computer museum >www.snakebiteandblack.co.uk - monthly gothic shenanigans

22 years, 1 month

sco unix

by rachael＠rachael.dyndns.org

Hi I found a SCO software diskette package box, but I`m not sure all the disks are there. "SCO unix system v/386 Rel: 2.0.0d volume: 1" "SCO CGI n286 rel. 1.1.0e volume: 1-3" "SCO Xsight rel 2.3.0j volume:1-2" "Open Desktop rel 1.1.0 p21-p37", suspect that I lack the first 0-20 disks for this. "Open Desktop update F uf1-uf2" anyone knows how many disks there is supposed to be ? regards Jacob Dahl Pind -- CBM, Amiga,Vintage hardware collector Email: rachael()rachael.dyndns.org url: http://rachael.dyndns.org

22 years, 1 month

new computers... Finally!

by ninajane＠ccn.go-free.co.uk

Hey (i dont know ur name) I have an Amiga 500+ with an A520 adaptor. When i tuned it to my T.V. it just stays dark blue, but says there's a signal. The animated hand thing doesn't even appear! Help! And I don't have the poster about the connections!!!

22 years, 1 month

DF32 emulator

by charlesmorris＠direcway.com

On Mon, 07 Apr 2003 12:42:27 -0500, you wrote: >... shows the use of DMCA and DCEA to clear a disk, rather than DEAL. > > >Not exactly what you were looking for, but perhaps someone else has the Crap. Oh well, I was planning a Revision B anyway, to take care of the bugs I already discovered (such as DFSE skipping on error like an RF08 instead of skip-on-no-error). I guess I'll have to figure out how to clear the LS191 counters I used for registers. Maybe there's a 4 bit counter with a clear input I can use. The simplest way would be to force 0's into the load inputs to the counters for EMA and EA and strobe the clock line with that IOT, but that would require a couple of chips and there is just no more room (and keep the board "cheap", standard 160x100mm Eurocard size and two-layer). I could put a lot more logic on a 4-layer board but they cost a LOT more. All those 12-bit busses take up a lot of PCB real estate! Meanwhile I think it'll work with a non-expanded (4K) machine like my 8/L ;) Back to the drawing board! -Charles

22 years, 1 month

Anyone need any IBM XT parts?

by rigdonj＠cfl.rr.com

I picked up an IBM XT today to get the FH drive for one of the list members. Does anyone need any of the other parts? It has IBM CGA card, IBM HD controller, IBM floppy drive controller card with port on the back, IBM 3.5" floppy drive with black front and blue button, fits in a 5 1/4" HH opening, also serial/parallel port card, 256/640K Motherboard. I don't have a CGA monitor so I installed another video card and I've been using the machine all afternoon. The PSU is bad, but everything else seems to work. Also have a Seagate st238R hard drive. It's not reading cluster #1 so it's not bootable but otherwise it's working fine. LL formatting should (may?) cure the problem. No math coproccessor. Best offer plus shipping on any or all parts. Joe

22 years, 1 month

3.5" floppy drive in IBM XT?

by melamy＠earthlink.net

the hard drive is definitely a replacement. The orginal XT harddrive was a full height and I believe it was a Seagate ST412 (10 meg). As for the floppy controller, it may have a bios extension on board in rom that contains the driver for it unless there was a XT bios upgrade available for it, but I don't recall that or IBM creating a 3.5" board for the XT best regards, Steve Thatcher >--- Original Message --- >From: Joe <rigdonj(a)cfl.rr.com> >To: cctech(a)classiccmp.org >Date: 4/7/03 10:12:47 AM > I picked up an old IBM XT today and it has a 3.5" floppy drive in it (and it works!) Anybody ever heard of this? The drive has it's own controller card and both it and the drive appear to be IBM parts. )I haven't pulled everything apart to be sure.) FWIW the computer also has a FH 5 1/4" floppy drive and a HH 5 1/4" 10 Mb hard drive with a Seagate logo on the front of it. Anybody know if this is an original XT hard drive or a replacement drive? It's been so long since I've seen an original XT with the 10 Mb drive that I don't remember much about it. > > Joe

22 years, 1 month

Need docs for Microsoft Premium Softcard //e

by vcf＠siconic.com

Sigh. I am hoping someone has the docs to the Microsoft Premium Softcard //e. This is a nice Z80 card for the Apple //e that allows one to run CP/M. Specifically, I need to know how MS assigned the serial card. I am trying to use PIP to copy a file out to the serial port. Barring that, I need to know if the utility program called APDOS that comes on the master system disk can copy files *from* CP/M *to* Apple DOS. As far as I can tell, it seems you can only copy from Apple DOS to CP/M. Lastly, if anyone with knowledge of utilities that allowed one to transfer CP/M files to Apple DOS can inform me of such, I would really appreciate it. I have no idea where my manual for this went :( -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

22 years, 1 month

Need help with ASR33 tape reader - major frustration!

by charlesmorris＠direcway.com

I can't get my ASR33's tape reader to stop missing occasional characters! I have lubed it and tried setting it according to the procedures in the manual but that is very frustrating since many of the adjustments interact. Using a test tape punched on the same TTY with 72 printable characters per line (incrementing from space through Z and punctuation, then LF + CR at end of each line), if I carefully adjust the detent position I can achieve one (and occasionally 3 or 4 in a row) "skipped" characters about every 10-20 lines which is roughly once every 1000 characters on average. I can load short tapes like the BIN loader and then the second short section of 4K FOCAL successfully, but the long first section of FOCAL (which takes over 10 mins. to read in) invariably gives a checksum error. In other words, not good enough. The missing characters are not being read into the data stream at all, nor are the previous or next characters duplicated. I wrote a program to just read the characters into the AC and halt if a NUL (000) is read. All 0's are indeed being read on the missed character and I think this is because the contact pins are all held down if there is a "misfeed" where the tape moves just enough to put the pins between rows of holes, but not far enough to skip to the next. Anyone with experience "tuning" this beast, please give me a hint! thanks Charles

22 years, 1 month

anybody want a Dauphin LapPro 286 User's Manual?

by rigdonj＠cfl.rr.com

Found today in a scrap today. I figured someone would want it. Joe

22 years, 1 month

FH IBM 5 1/4" floppy drives

by rigdonj＠cfl.rr.com

Who was asking me for a couple of these a few weeks ago? Reply by direct E-mail. Joe

22 years, 1 month

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test-drb April 2003