Mike K. and I are working on resurrecting a Cromemco System 3
This is a large S-100 rack-mount unit with dual 8" floppy drives
and internal hard drive.
Got it powered up yesterday, and all DC supplies appear normal.
Managed to get it working to the point where it tries to boot from
the A drive (floppy) - unfortunately we have no boot diskette.
We able to get into the 'RDOS' ROM monitor for which we have no
documentsion. Discovered the 'BA-BD' commands which try and boot:
BA accesses the first 8" floppy, BB accesses the second 8" floppy.
BC&BD just "hang". Also discovered an 'I' command (IPL?) which
also hangs...
We were not able to get any action from the hard drive - I don't
know if it would be booted by 'BC', 'BD' or 'I' (or something else).
I did note that the HD power was disconnected when we opened the
box, so I do not know if the hard drive even works.
Q1) Does anyone out there have a boot diskette for a Cromemco
System 3? I'm pretty sure that if we had a boot diskette we
could bring the system up.
Q2) Can anyone tell be exactly what needs to be done to boot the
hard drive? Are there any diagnostic procedures that we can
use to confirm that the HD is operating?
Any information or pointers to information on this system would be
very much appreciated.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
http://www.parse.com/~ddunfield/museum/index.html
Received on Thu Jun 10 2004 - 05:18:22 BST