Controlling font data memory access for display and non-display

Details Controlling font data memory access for display and non-display Controlling font data memory access for display and non-display

1995-05-03

1997-04-08

Herndon, Heather R.

G06F 1721

Patent

active

056197217

ABSTRACT:
A display control system employing a character display mode. When a character code determining circuit determines, during a display period, that character code data read out from a character code data memory is a specified character code such as a space code, or when a raster address determining circuit determines that a raster address of character information displayed on a display device is a specified raster address, an address selector selects a CPU address in accordance with a selection signal output from a selector control circuit. Access to a font data memory is then performed in accordance with the selected CPU address.

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