Unanswered Questions
12 questions with no upvoted or accepted answers
16
votes
0
answers
837
views
Was there a cartoon series in the UK computer press called "Computability Brown"?
My dad was a computing professional in Scotland in the 1970s. He received a couple of industry trade magazines every week, such as Computer Weekly and Computing. In one of them, I remember there being ...
5
votes
0
answers
284
views
How can I prevent unwanted key repeat when using PS/2 keyboard with USB adapter?
I'm currently using an IBM Model M keyboard with a PS/2-to-USB active adapter. When I type fast on my main PC, almost any key will get "stuck" and keeps repeating until I press another key.
...
5
votes
0
answers
217
views
Why did the Burroughs 205 not use bi-quinary like the IBM 650?
The IBM 650, one of the first general-purpose digital computers, designed in the early fifties, used decimal digits with bi-quinary representation for reasons discussed here: Why did the IBM 650 use ...
4
votes
0
answers
126
views
IBM RS/6000 Token Ring ISA card not operational
After solving a configuration challenge, the ISA Token Ring adapter in my RS/6000 is still not connected to the ring.
Extract from errpt -a:
LABEL: NONE
IDENTIFIER: 0118D2D0
Date/Time: ...
4
votes
0
answers
215
views
Are there alternative BIOS ROMs for the IBM 5162?
This page references a problem with the IBM 5162 BIOS where it will present an error during POST under some circumstances and that using a third-party BIOS was a workaround.
What other BIOS ROMs ...
3
votes
0
answers
213
views
How small a punched card or punched tape batch job could be?
A while ago I read a post about creating the smallest possible ELF executable doing something observable — printing the number 42, for example — which Linux could accept and execute successfuly. The ...
3
votes
0
answers
218
views
Why was the IBM 7070 unsuccessful?
In a talk on the IBM 360 and the computers it replaced the speaker at 39:35 describes the 7070 as 'a dog', and elsewhere contrasts it unfavorably with the 1401 (which considerably exceeded ...
2
votes
0
answers
73
views
What was the hardware-level data format on IBM 1316 or 2316 disk packs?
A description of the hardware-level track format of the IBM media used on the BESM-6 I've found is as follows (translated by Google with minimal corrections):
Track header structure:
...
2
votes
0
answers
203
views
Hitting the CMS Limits of Portable Code
I wrote this arbitrary precision arithmetic utility on BSD in my postgraduate days, then after graduating ported it to DOS using TurboC. Was proud that it would do the same thing with 16bit word ...
2
votes
0
answers
110
views
When and with which system or software was IBM's system of tape headers (VOLx, HDRx, ...) introduced?
Background:
IBM compatible tape structure (*1) consists of a series of label blocks describing the volume and each file (Data Set). Essential the structure looks like this:
VOL1..9 Volume header
...
1
vote
0
answers
142
views
Record definitions with IBM COBOL and IMS
A common technology stack for line of business applications in the sixties and seventies was IBM COBOL with the IMS database. I'm curious about how the combination handled record definitions.
COBOL ...
1
vote
0
answers
244
views
Are Unisys ClearPath Libra mainframes still in use in Australia?
By use, I mean are they still actively being developed for. I know this is the case in New Zealand and USA. In particular, is ALGOL code still being written on them?