And I'd still like to get a copy of the manuf. MP/M disk if any can help Bill Degnan twitter: billdeg vintagecomputer.net On Sep 2, 2017 3:21 PM, "william degnan" <billdegnan@gmail.com> wrote:
Hi, After a lot of effort I repaired a Systems Group 2800 S-100 computer by tracing the electrical faults related to old caps and a 7805 regulator. Now it boots to the hard drive.
The system boots up and asks PASSWORD PLEASE-
I have tried various passwords but none work.
I found a binary of the MP/M OS that came with the SG 2800 here: http://www.cpm.z80.de/binary.html (search page for "Systems Group System 2800")
Is there anyone here who can make me a bootable 8" disk by using this binary?
In the meantime I am going to see if I can make a generic MP/M disk boot that will work this system, but it would be nice to get the disk the computer came with running.
I don't have the skills to use the appropriate assembler, it has been years since Dan Rogantis's class on building a CP/M (MP/M) disk from a binary of the disk files. I suppose I could just copy them to a CP/M disk but I doubt it will boot. If I keep at it I can probably get it to work but I will accept help if this is an easy project for someone else. Suggestions?
Thanks
Bill