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.