KAY 1024 kB
port 7FFD: (adressation in UNREAL SPECCY - 01xxxxxx xx1xx10x )
D0 = bank 0 ;128 kB memory
D1 = bank 1 ;128 kB memory
D2 = bank 2 ;128 kB memory
D3 = videoram
D4 = rom
D5 = disable paging
D6 = unused
D7 = bank 5 ;1024 kB memory
port 1FFD:
D0 = 1 - disable rom and connect ram page 0 in adress space 0-3FFF
D4 = bank 3 ;256 kB memory
D7 = bank 4 ;512 kB memory
Guide to the ZX Spectrum ports





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