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XGA, yet another VDP

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Hardware/XGA

2019. 9. 10.


Preliminary specification of "eXtended Graphic Accelerator"


hi-resolution mode

512x424 resolution

8 bit per pixel, 256 color palettes

4 pages

low-resolution mode

256x212 resolution

8 bit per pixel, 256 color palettes

pattern mode support

sprite support

pattern mode

pattern size: 8x8 or 16x16

pattern map size: 64x64

number of patterns: 256 (max. 8 sets)

sprite

pattern size: 16x16 or 32x32

number of patterns: 256 (max 4 sets)

number of display planes: 106 (32x32) or 256 (16x16)

ETC

color: 256 palettes, 15-bit RGB

scroll function: Pixel by pixel in X/Y directions