Computer with color display

Details Computer with color display Computer with color display

1983-12-12

1985-08-06

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340803, 340802, G09F 930

Patent

active

045339090

ABSTRACT:
A microcomputer system with video display capability, particularly suited for small business applications and home use is described. The CPU performance is enhanced by permitting zero page data to be stored throughout the memory. The circuitry permitting this capability also provides a pointer for improved direct memory access. Through unique circuitry resembling "bank switching" improved memory mapping is obtained. 4-bit digital signals are converted to an AC chroma signal and a separate luminance signal for display modes. Display modes include high resolution modes, one of which displays 80 characters per line.

REFERENCES:
patent: 4136359 (1979-01-01), Wozniak
patent: 4310838 (1982-01-01), Juso et al.
patent: 4360804 (1982-11-01), Ohura

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