BUGS IN TRDOS

[savelij]

This ZIP file contain different ZX roms and TR-DOS roms with fixed return to basic:
http://velesoft.speccy.cz/other/trdo...ed_hl'.zip

1) - Fixed ZX rom refresh value of HL' register after return from machine code. This roms ignore bug in all trdos versions and RETURN will work always correct with all trdos roms.

2) - Fixed TR-DOS roms refresh HL' register before return to ZX rom/basic. Can be used with all ZX roms. (this way is best )

Еще один вариант того же патча:

ORG #1D0C
EXX
LD HL,#2758
EXX
DEC HL
LD A,#12
CP (HL)
RET NZ
DEC HL
JP #235

Достоинство: не требуется занимать дополнительные байты.