Sinclair ZX80
Advanced Interface Designs HRG manual
The enclosed plans describe a circuit which when properly assembled will provide 256 horizontal x 192 vertical bit mapped high resolution graphics (HRG) for Sinclair ZX80/81 type computers. Although a novice, with care, could assemble the circuit, it is more suitable for those who have had some wire wrapping experience.
Advanced Interface Designs HRG manual Read More »
Nuclear Decay Simulation
A popular lab exercise uses special dice to simulate radioactive decay. Marked die faces show the decay probability. After shaking and throwing the dice, replace those with marked sides showing with spheres (stable atoms) or dice with different decay probability (radioactive daughters). Use over 200 atoms for a smooth graph. This program throws, examines and
Nuclear Decay Simulation Read More »
Phone Number Word Generator
What does your phone number spell out if changed to letters? A friend’s phone number, 438-5678, spells GET LOST. A bank’s auto loan department answers NEXT CAR.
Phone Number Word Generator Read More »
Translating BASICs — What Won’t Work
With all the software available for other computers, many ZX80 owners want to convert programs from Microsoft BASIC (used in PETs, Apples, and TRS-80s) to ZX80 BASIC. Sometimes this proves futile due to inconsistencies between Microsoft and ZX80 BASIC.
Translating BASICs — What Won’t Work Read More »
Edge Connectors Available
Kopak Creations of New York now offers 46-pin edge connectors for ZX80/81s.
Edge Connectors Available Read More »
Simulate READ, DATA for Strings
Although your ZX80 (both ROMs) or ZX81 does not have READ, DATA or RESTORE functions, you can easily mimic them with other functions.
Simulate READ, DATA for Strings Read More »
Address and Phone Book
This 4k program stores ASCII as codes into an array, getting areund the 4K BASIC’s lack of string arrays. It stores and prints names and addresses one at a time. This program runs in a 2K machine; for 1K RAM reduce DIM A.
Address and Phone Book Read More »
4K/1K Blackjack
In this 4K/1K ZX80 version of 21 you play one-on-one against the computer-dealer. It deals you two cards face up. To take another card, hit NL; to hold, press SPACE NL. The ZX80 then plays out its hand and shows if you win or lose.