MicroDigital

TK 82

A Brazilian clone of ZX80 from Microdigital. It comes with a joystick interface and the tape speed can either be 300 bps or 4200 bps. It has 4 KB ROM and 2 KB RAM (expandable to 16KB).

TK 82c

As TK 82 but has 8 KB ROM

TK 83

A Brazilian clone of ZX81 from Microdigital. It comes with a joystick interface and the tape speed can either be 300 bps or 4200 bps. It has 8 KB ROM and 2 KB RAM (expandable to 64 KB).

TK 85

A Brazilian clone of ZX81 (or rather the Timex-Sinclair 1500) from Microdigital. As you can see on this picture I got from a tribute page it looks more like a Spectrum. It comes with a built in joystick interface and the tape speed is either 300 BPS or 4200 BPS. It has 10 KB ROM and 16 KB RAM.

TK 90X

A Brazilian clone of ZX Spectrum from MicroDigital. There is no NMI ROM error and there is no dot crawl just like the 128K Speccy. It's also has two more instructions, TRACE and UDG, and all the messages are in Portuguese. The modified ROM caused some compability problems. It comes with a built in joystick port (Interface II compatible)..

TK 95

Also a Brazilian clone of ZX Spectrum (or rather of Timex-Sinclair 2048). A development of the TK 90X that is more compatible with the original ZX Spectrum and has a full size keyboard.