Ruud
Veteran Member
I asked this first in the software part but thinking about it again, it will be fitting here much better.
CP/M can be run on a stand alone computer with its own video screen and keyboard or can be run on a computer which is accessed with a terminal. Like the Zeta from Sergey. So far I have seen running MS-DOS only on PCs and I was wondering what would have to be done to run it on a, for example IBM PC/XT, and accessing it over its COM port using a terminal. But I want to go a bit further and not using the COM port.
The Commodore CBM 8000 series cannot run CP/M because they have a 6502 on board. So the Softbox, http://mikenaberezny.com/hardware/pet-cbm/sse-softbox-z80-computer/ , was developed so the CBM could run CP/M in an indirect way. My idea is to use a Commodore PC, a XT or AT compatible, to enable the CBM to "run" MS-DOS. But, like the Softbox, over the IEEE488 bus. I have my own made IEEE488 interface so the hardware isn't the problem.
I think it is "just" changing INT 10h and INT16h using a driver loaded by CONFIG.SYS but I could be wrong. I have done some googling to avoid inventing the wheel twice but I think I used the wrong keywords: I got a lot of feedback but not what I wanted. What I'm looking for is the exact info of what needs to be changed/added or what ever. The source of a program that does this over the COM port would be welcome: I only have to change the part that handles the hardware.
So any info is very welcome. Thank you in advance!
CP/M can be run on a stand alone computer with its own video screen and keyboard or can be run on a computer which is accessed with a terminal. Like the Zeta from Sergey. So far I have seen running MS-DOS only on PCs and I was wondering what would have to be done to run it on a, for example IBM PC/XT, and accessing it over its COM port using a terminal. But I want to go a bit further and not using the COM port.
The Commodore CBM 8000 series cannot run CP/M because they have a 6502 on board. So the Softbox, http://mikenaberezny.com/hardware/pet-cbm/sse-softbox-z80-computer/ , was developed so the CBM could run CP/M in an indirect way. My idea is to use a Commodore PC, a XT or AT compatible, to enable the CBM to "run" MS-DOS. But, like the Softbox, over the IEEE488 bus. I have my own made IEEE488 interface so the hardware isn't the problem.
I think it is "just" changing INT 10h and INT16h using a driver loaded by CONFIG.SYS but I could be wrong. I have done some googling to avoid inventing the wheel twice but I think I used the wrong keywords: I got a lot of feedback but not what I wanted. What I'm looking for is the exact info of what needs to be changed/added or what ever. The source of a program that does this over the COM port would be welcome: I only have to change the part that handles the hardware.
So any info is very welcome. Thank you in advance!