An interesting little program by Gregory C. Harder. Adapted to ZX81 from an article in Creative Computing.
Hardware Requirements
You will need a ZX81 (or TS1500) with “64K” RAM (RAM from 16K to 64K). You also have to have 8K of static RAM, mapped 8-16K, for the high-res display file and associated data.
The program was tested on the EightOne, sx81 and NO$ZX emulators.
How To Run The Program
Turn on your computer or start your emulator. Type the following:
POKE 16389,192
NEW
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