ESF/81 Monitor Program

Platform(s): TS 1000
Developer: Tom Wheeler
Date: 1982
Price: $19.95
Rarity: uncommon

The ESF/81 monitor program will allow you to program your Sinclair ZX81 at the most elementary level, in “machine language.” In. addition, the ESF/81 monitor will let you back up other machine-language programs stored on ESF wafers for extra security.

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