Content by Peter H. Wendt (original HERE). Edited by Tomáš Slavotínek.
Last update: 01 May 2022
Assuming you have a machine which refuses to boot from a floppy and hard
drive and you land in IBM ROM BASIC after pressing the [F1] function key, you
can use the following code to identify the installed adapters.
To run the program press [F2].
20 for q=15 to 8 step -1
40 print q-7;": ";hex$(inp(&h101));"-";hex$(inp(&h100))
50 next q
The output will be a list of adapter IDs, starting with slot #8. On machines with less than 8 slots, only the lower positions are valid. Empty (or missing) slot will show as ID = FFFF.
It might look like this:
8: 8E-FE (IBM SCSI without cache)
7: F-1F (Adaptec AHA-1640 SCSI)
6: E0-1 (IBM 16/4 Mb/s Token Ring)
5: FF-FF (*empty slot*)
4: 8F-DA (IBM XGA-2 Video)
3: FF-FF (*empty slot*)
2: FF-FF (*empty slot*)
1: FC-FF (IBM 2-8MB 386 Memory)
Note: The text enclosed in brackets is not part of
the program output.
Note: Leading zeros for the individual ID bytes
are not printed. I.e. F-1F means ID 0F1F and E0-1 means ID E001.
Use one of the adapter lists to map the IDs to adapter names —
QCONFIG Adapter List,
SIT Adapter List,
or MCA.DAT from the QBMCA utility.