View Single Post
Old 15th Jun 2019, 1:04 pm   #94
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: Gemini 80-Bus System

VPM/M requires the memory management of the GM813 card to run. However VPM/M is a program that runs under BDOSZ/CCPZ/BIOS. BDOSZ and CCPZ are freeware/shareware programs.

The BIOS is largely written by me - so it would be possible on your system to run just ccpz/bdosz but
it would need a different boot rom

you will probably need to set
svcard false
vidcard true
emucard false

Note that escape during startup enters a simple monitor (? gives help)
Note - the floppy disk format supported by tbios is *NOT* the same as the gemini format

All of this was written without reference to the gemini system or CP/M - deliberately saves on cost
Attached Files
File Type: zip hdboot.zip (50.2 KB, 108 views)
File Type: zip bdosccpz.zip (42.8 KB, 98 views)
JohnBHanson is offline