
ZX SPECTRUM EMULATOR MAC OS X CODE
The rights to the ROM are owned by Nine Tiles Information Handling Ltd, who were contracted by Sinclair to write the ROM code for the ZX81 (as well as the ZX80 and ZX Spectrum). It was one of the earliest home computers manufactured in the UK. It ran a Z80 processor clocked at 3.25 MHz with a mere 1KB of RAM (although many users purchased a 16KB external RAM pack). It was launched in 1981 and sold for £49.95 in kit form and £69.95 for an assembled computer.

The ZX81 was a hugely successful Z80-based home computer produced by Sinclair Research and manufactured in Scotland.
