Apparatus for controlling a scanning type video display to be di

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Details

36423782, 3642372, 364247, 3642593, 364DIG1, 395166, G06F 1566

Patent

active

053197860

ABSTRACT:
An apparatus for controlling the access of a video memory comprises a group of registers in which various kinds of control data are set to access a video memory. The group of the registers are set to store data for detecting scanning rasters, incrementing or decrementing an address of the video memory which is accessed, and starting a DMA transfer of image data. Therefore, various kinds of accessing modes can be performed without the necessity of a complicated software.

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