Please test this basic program on real PENTAGON 1024SL (with 48rom)
1 CLEAR 49151:OUT 61431,0
2 OUT 32765,16:POKE 49152,16
3 OUT 32765,80:POKE 49152,80
4 OUT 61431,4:PRINT PEEK 49152
5 OUT 61431,0:PRINT PEEK 49152
After run will program show 80 + 80
After set bit D2=1 will only ignored D5,D6,D7 on port 7FFD and disabled memory 1MB ?
I enable 1MB ram and set on port 7FFD bits D7 via OUT 32765,128+16. After disable 1MB memory via OUT EFF7,4 is (in UNREALSPECCY emulator) from adress 49152 same page from 1MB extra memory. But this memory is disabled. It's correct ?