=== DOS/AMSDOS patches ===
This is incomplete at the moment.
The DOS/AMSDOS rom has been patched in the following way:
there is:
C1 18 11ld a,&c1 jr &c581 * At offset &62D instead of: CALL &c638 there is: scf ret defb &c6 * At offset &64D instead of: ld a,&45 there is: scf ret * At offset &652 instead of: ld a,&4d there is: scf ret * At offset &666 instead of: call &c976 there is: jp &dc00
....
* At offset &763 instead of: