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M > MICRODIGITAL > TK-2000   


Microdigital
TK-2000

The TK-2000 was a clone of the Apple IIc for its Electronics part; and a copy of the Atari 1200XL for the casing part.

For copyright reasons, Microdigital preferred to say that it was compatible with the Multitech MPF-II, an obscure Taiwanese computer which was somewhat compatible with the Apple II; but also added in its brochure that "a major part of Apple DOS software is compatible with the TK-2000" :-)

On top of Apple II features, the TK-2000 offered 64 KB of RAM, a sound generator, a PAL/M TV/RF modulator, a parallel printer connector and the ability to connect simulteneously two tape recorders. On the other hand, there were no expansion slots; which resulted in compatibility problems with Apple software that used original Apple hardware I/O.

Picture from http://cobit.mma.com.br. Thanks to Ericson Benjamim for his help.

_______________________

Igor Morgado remembers:
Its good to remember on good feature in TK2000 that didn't exists in other apples. It has a internal assembly code interpreter, it could be called with LM command, with it the programmer could see the code of all basic programs in machine code.
Some adressing are different from Apple (as peek and poke basic commands).
Some tape instructions are different too.


Chester specifies:
I used a TK2000, and believe me: it is *not* an Apple IIc clone. For starters, it does not have a real text mode (text was drawn on the graphic string when the output ROM routine was called, and not when you wrote on the area reserved for text/low-res graphics on the Apple II). Software had to suffer slight modifications to run on it (and several software was modified, including games such as Gobbler and even DOS 3.3).
And copyright was not an issue, since Brazil on that time had a "market reserve", which allowed Brazilian computer manufactures to clone foreign machines at will, only being required to get approval from the government, which was routinely given (the only known exception being the Unitron Mac clone, but it was on a later period, when politics were under gradual changes here).


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Both TK2000 and TK2000-II (a later model w/ 128Kb of RAM) are clones of MPF-II computer.

          
Saturday 22nd December 2007
Giovanni Nunes (Brazil)

 

NAME  TK-2000
MANUFACTURER  Microdigital
TYPE  Professional Computer
ORIGIN  Brazil
YEAR  1984
END OF PRODUCTION  1988
BUILT IN LANGUAGE  BASIC interpreter
KEYBOARD  Full stroke 54 key with arrow keys
CPU  6502
SPEED  1.2 MHz
RAM  64 KB or 128 KB (Model II)
VRAM  1 KB (Text mode) or 8 KB (Graphics mode)
ROM  16 KB
TEXT MODES  40 chars. x 24 lines
GRAPHIC MODES  40x48 x 8 colors, 280x192 x 6 colors and 280x192 x 6 colors with text
COLORS  8
SOUND  TV (by RF out)
SIZE / WEIGHT  37.6 (W) x 32 (D) x 6.7 (H) cm
I/O PORTS  1 expansion slot, rf and composite video (PAL-M), 2 joystick, tape recorder In/Out, 1 parallel.
BUILT IN MEDIA  None
OS  Apple) DOS 3.3 compatible
POWER SUPPLY  external power supply unit (110/220V)
PERIPHERALS  All Apple II expansion cards & peripherals
PRICE  Unknown


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