Multimode expanded memory space addressing system using independ

Details Multimode expanded memory space addressing system using independ Multimode expanded memory space addressing system using independ

1987-03-03

1990-01-02

Williams, Jr., Archie E.

Boots, shoes, and leggings

3642383, 3642423, 36424233, 364245, 36424531, 3642563, 3642565, G06F 1200, G06F 1202, G06F 1206, G06F 1210

Patent

active

048917524

ABSTRACT:
A computer system includes a computer address modification system that is advantageously coupled in a bus network to selectively translate memory address data in 16K blocks and provide DMA page addresses which may match the 16K memory address blocks. The modification system includes a mapping RAM selectively providing translated addresses to enable addresses in a 1 megabyte address space to be selectively mapped to a 16 megabyte extended address space. The modification system also includes a page register storing for each addressable 16K block of data for each DMA channel a page address within the extended address space.

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