Unanswered Questions
15 questions with no upvoted or accepted answers
7
votes
0
answers
88
views
iRMX bootsector on a iRMX partition how to clone?
I have an old year 2000 instrument which has a 340MB hard drive. I am trying to clone the hard drive but I am having major issues.
First the instrument uses iRMX and MSDOS the bios is using the CHS ...
- 71
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.
...
- 1,676
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: ...
- 129
4
votes
0
answers
346
views
How to use IIgs enhanced graphics modes in AppleSoft BASIC with System 6?
There are many packages that let you use the enhanced graphics modes of the IIgs in AppleSoft BASIC. However most packages like Iconix do not like System 6 so they have to run off disks and not the ...
- 2,472
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 ...
- 2,654
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 ...
- 19.4k
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 ...
- 63.1k
3
votes
0
answers
2k
views
How many Amiga 590 units were sold?
The A590 was an external hard disk for the Amiga 500, in 'sidecar' form factor, that could also hold an extra megabyte of RAM.
How many 590s were sold, throughout its life?
- 63.1k
2
votes
0
answers
138
views
Cloning old Quantum drive using 68 pin to 50 pin adapter
I’m now trying to clone a 50 pin SCSI drive on XW8000 machine. The cable is 68 pin SCSI and has a terminator at the end, my dd command is able to copy the drive to USB, but whenever I try to restore ...
- 23.2k
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:
...
- 19.4k
2
votes
0
answers
157
views
Compaq Contura 430C replacement hard drive
I have a working Compaq Contura 430C laptop, but its hard disk is really aging and making noises when under load. I don't want to stress it any further and thinking of replacement and preserve the ...
- 23.2k
2
votes
0
answers
133
views
Micropolis 1325 ST506 MFM drive giving "Address mismatch"
I am trying to recover an old mini-machine that is using a Micropolis 1325 drive, and I am successfully reading parts of the drive. I am trying to recover as much as data from the drive, and ...
- 121
2
votes
0
answers
963
views
Installing MS-DOS 6.22 on a 386-class laptop with an SD/IDE adapter fails at 99%. How do I fix this?
I'm using an AST Premium Exec 386SX/20 laptop. I have installed a new BIOS battery and it does retain settings when the machine is power-cycled.
I'm attempting to install MS-DOS 6.22 from a set of 3 ...
- 345
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
...
- 228k
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 ...
- 63.1k