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
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
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!!!
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
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
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
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 *
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