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MSX memory mapper

The 64kB address space is divided into 4 16kB sections. In each section one of 256 pages can be selected.

Pages are selected with ports #FC..#FF. (The high byte of page number outed to #F8..#FB is ignored.)

4MB internal memory mapper

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Files for download

mapper.zip 56.4kB (2004-07-05 16:54)
External 256kB memory mapper for Spectravideo SVI 738 X'Press (PNG schematics).

See also

DRAM
Dinamic Random Access Memory (DRAM). Memory with multiplexed address lines.

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CPC
4MB RAM
Flash ROM
To 128
Sam Coupé
SAM512
Portfix
YABUS.Z80RTC
Z80JOY
MSX
Mapper 4MB
MSX-2 SVI738
Spectrum
FlashD0
8251
AY
Eniac'owe
Dock
Gama 192
Keyboard
ROM replacer
SamRam
TC2144
To 128K
To +3
Wonder RAM
Z80JOY
ZX 4MB
ZXMUX
Timex
Memory
Timex FDD
YABUS.TF
YABUS.TF3
TI-of-TTL
ZX81
Memory

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© 2009-12-28 21:50 Jarek Adamski, http://8bit.yarek.pl