CP/M-86/80 CBIOS
This CBIOS allows the V20-MBC fitted with the V20 CPU to seamlessly execute either 8086 or 8080 programs.
The CBIOS patches the CCP at initialisation to execute programs as follows:
- If program specified is a .CMD file, load and execute it as normal
- If the SAVE command was entered and an 8080 bank is still allocated, create the specified save file
- If program specified is a .COM file, allocate an 8080 memory bank, load program, prime CPM-80 environment and execute program