Brazilian mix-ups

Alexandre Souza alexandre-listas at e-secure.com.br
Mon Apr 27 11:43:14 CDT 2009


> You missed the TK90X which appears to be an enhanced 48K Spectrum with a
> built-in joystick port. I've not dared to power mine up yet!
> http://www.binarydinosaurs.co.uk/Museum/Microdigital/tk90x.php

    No Adrian, I tried to list the "bizarre" computers. Guts of one, 
external box of other. TK90X is an almost-copycat clone of the Spectrum. The 
case is fatter and there are the ventilation pits on the top. And a joystick 
port that conforms to the interface2 standard (6789+0 if I'm not mistaken). 
But it "looks" like a ZX Speccy. There are modifications on the ROM (boot 
screen, UDG2 graphic editor) but you can put a plain speccy rom on it's 
place and it will work. There are some games that REQUIRES the spectrum ROM 
(I'm very sorry I don't remember which ones, but it was a common mod in 
Brazil to put a copy of the speccy rom on the TK90/95 and a flip-flop with a 
reset button to change ROMs and make it more compatible with the original 
speccy).

    Why haven't you dare? Just put a plain 9-12v dc, positive tip power 
supply on that. you'll tune it on channel 3 or 4 to see the image, there is 
a mod for composite video out of it, but the original is RF (vhf) only




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