Re: Gemini 80-Bus System
Just another thought - are you running RP/M via the serial port. If so remember CP/M is configured to run on a video card.
To change that look at track 0 sector 31h (Using 128 byte sectors). This sector starts with
C3 xx xx (17 times) and is the bios jump table. at offset 33h in this sector is a byte (15h). Change
this to 14h will make CP/M use the serial port.
You might find that is why you are not seeing anything on your screen and actually CP/M is booting to the video card you cannot see.
All numbers are in hex and are the result of using he disked program (Type ? to get help)
Last edited by JohnBHanson; 16th May 2019 at 5:35 pm.
Reason: Make sure reader understands numbers are in hex
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