Two board, extensive upgrade that integrates the TMS 9918A video display processor into the ZX81/TS1000. Provides:
- color
- multiple graphics resolutions, up to 256×192 pixels
- up to 32 sprites
- a SLOW mode almost as fast as FAST mode
- blink free FAST mode
- lower case characters instead of inverse upper case
Interfaces the TMS 9918A color graphics video chip, same as used in the TI 99/4A, Colecovision and MSX computers. Includes ROM that supplements the TS1000 ROM, replacing display routines.
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