The TK-90X from Microdigital is a ZX Spectrum clone from Brazil. It was produced in 1985 when importing foreign computers to Brazil was illegal and the Speccy was one of the rulers in the 8 bit personal computer world.
This computer is very similar to the original Spectrum. You had the Z80A running at 3.58 MHz, 16Kb and the 48Kb versions (mine is 48Kb), built-in Sinclair BASIC and the usual rubber keyboard.
I bought this TK-90X from a guy in Argentina so the ROM is in Spanish. It is in very good shape considering that it is not easy to find well kept computers from this time. I also got the original box along with it, even though that is not in such great shape:
Even though there were some compatibility issues with a few games, overall the TK-90X was a good Speccy clone especially when compared to other clones of the same era.
|BUILT IN LANGUAGE||Sinclair BASIC|
|KEYBOARD||Rubber keyboard – 40 keys|
|RAM||16K and 48K versions|
|TEXT MODES||32 chars. x 24 lines|
|GRAPHIC MODES||256 x 192 dots|
|COLORS||8 with two tones each (normal and bright)|
|SOUND||1 voice / 10 octaves (via TV set)|
|I/O PORTS||Expansion port, tape-recorder (1200 bauds), RF video out, Joystick|
|POWER SUPPLY||External 9V DC power supply unit|
|PERIPHERALS||Sinclair (not all) and third sources peripherals|