Re: SDX High Memory
Posted: 28 Mar 2020 19:43
Should anybody be interested, attached is my disassembly of the SDX high memory.
There are two major areas of unused memory at:
Adopting the principle of overwriting unused parts of the BDOS and BIOS, the following space could also potentially be used:
There are two major areas of unused memory at:
- EC5F - F5B0
- F5EF - FA52
Adopting the principle of overwriting unused parts of the BDOS and BIOS, the following space could also potentially be used:
- D812 - D840 - Part of Read Console Buffer
- D912 - ???? - Depends how low the BDOS stack gets - More of Read Console Buffer
- E5C3 - E67D - BIOS Cold Boot code
- E700 - E7E0 - Keyboard, Display and Serial I/O