PAGING PORTS of ZX / CLONES

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Pentagon 128 kB ond ZX Spectrum 128 / +2
port 7FFD: (adressation 0xxxxxxx xxxxxx0x )
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 = unused

Pentagon 512 kB
port 7FFD: (adressation 0xxxxxxx xxxxxx0x )
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 = bank 3 ;256 kB memory
D7 = bank 4 ;512 kB memory

Pentagon 1024 kB
port 7FFD: (adressation 01xxxxxx xxxxxx0x )
D0 = bank 0 ;128 kB memory
D1 = bank 1 ;128 kB memory
D2 = bank 2 ;128 kB memory
D3 = videoram
D4 = rom
D5 = bank 5 ;1024 kB memory (if D2 of port EFF7=0)
D6 = bank 3 ;256 kB memory
D7 = bank 4 ;512 kB memory
port EFF7: (adressation 1110xxxx xxxx0xxx )
D2 = 1 - set 128 kB mode
0 - enable 1MB memory
(if D2 of port EFF7=1 then D5 of port 7FFD is used for disable paging)
D3 = 1 - disable rom and connect ram page 0 in adress space 0-3FFF

ZX Spectrum 128+2A / +3
port 7FFD: (adressation 01xxxxxx xxxxxx0x )
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 = unused
port 1FFD: (adressation 0001xxxx xxxxxx0x )
D0 = 1 - disable rom and allram mode
D1 and D2 set layout of ram pages if allram is set (see +3 manual)

Scorpion 256 kB
port 7FFD: (adressation - 01xxxxxx xx1xxx01 )
(adressation in REALSPECTRUM emul is also different )
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 = unused
port 1FFD: (adressation - 00xxxxxx xx1xxx01 )
D0 = 1 - disable rom and connect ram page 0 in adress space 0-3FFF
(UNREAL SPECCY emulator set after OUT 1FFD,1 ram page 0 to low 16kB, but REALSPECTRUM emulator set ram page 8 to low 16kB )
D4 = bank 3 ;256 kB memory
D6 = unused
D7 = unused

Scorpion 1024 kB
port 7FFD: (adressation - 01xxxxxx xx1xxx01 )
(adressation in REALSPECTRUM emul is also different )
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 = unused
port 1FFD: (adressation - 00xxxxxx xx1xxx01 )
D0 = 1 - disable rom and connect ram page 0 in adress space 0-3FFF
D4 = bank 3 ;256 kB memory
D6 = bank 4 ;512 kB memory
D7 = bank 5 ;1024 kB memory

KAY 256 kB - ( compatible with SCORPION 256kB )
port 7FFD: (adressation - 01xxxxxx xxxxxx01 )
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 = unused
port 1FFD: (adressation - 00xxxxxx xxxxxx01 )
D0 = 1 - disable rom and connect ram page 0 in adress space 0-3FFF
D4 = bank 3 ;256 kB memory

KAY 1024 kB
port 7FFD: (adressation - 01xxxxxx xxxxxx01 )
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: (adressation - 00xxxxxx xxxxxx01 )
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

ZX PROFI 1024 kB
port 7FFD: (adressation - 0xxxxxxx xxxxxx0x )
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 = unused
port DFFD: (adressation - xx0xxxxx xxxxxx0x )
D0 = bank 3 ;256 kB memory
D1 = bank 4 ;512 kB memory
D2 = bank 5 ;1024 kB memory

ATM 1 512 kB
port 7FFD: (adressation )
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 = unused
port FDFD:
D0 = bank 3 ;256 kB memory
D1 = bank 4 ;512 kB memory
D2 = unused

ATM 1 1024 kB
port 7FFD: (adressation )
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 = unused
port FDFD:
D0 = bank 3 ;256 kB memory
D1 = bank 4 ;512 kB memory
D2 = bank 5 ;1024 kB memory

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