Sixteen bit microcomputer memory boards for use with eight bit s

Details Sixteen bit microcomputer memory boards for use with eight bit s Sixteen bit microcomputer memory boards for use with eight bit s

1978-05-01

1979-07-31

Fears, Terrell W.

Static information storage and retrieval

Format or disposition of elements

307317R, G11C 1300

Patent

active

041632893

ABSTRACT:
A microcomputer system uses a standardized S-100 bus with eight bit Data In and eight bit Data Out lines, but has a sixteen bit microprocessor with sixteen bit bidirectional data input/output terminals. An arrangement of mirror image pairs of eight bit wide memory arrays on a single memory board are used, with means to cross-connect the Data In lines and Data Out lines for one memory array compared to another, these two memory arrays being accessed by the same address. A processor board containing the microprocessor chip connects the Data In and Data Out lines to the input/output terminals of the microprocessor by controllable unidirectional buffers which criss-cross the bytes on write compared to read operations.

REFERENCES:
patent: 4056811 (1977-01-01), Baker

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