website/content/museum/microdigital-tk-2000.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Microdigital TK-2000	Computers	Professional Computer	Brazil	1984	6502	name image logo company company_name specs tabs forum_thread emulators links oc_id source TK-2000 /media/museum/photos/microdigital_kt2000_system_s1.jpg /media/museum/logos/microdigital_tk2000_logo.gif /companies/microdigital Microdigital label value NAME TK-2000 label value MANUFACTURER Microdigital label value TYPE Professional Computer label value ORIGIN Brazil label value YEAR 1984 label value END OF PRODUCTION 1988 label value BUILT IN LANGUAGE BASIC interpreter label value KEYBOARD Full stroke 54 key with arrow keys label value CPU 6502 label value SPEED 1.2 MHz label value RAM 64 KB or 128 KB (Model II) label value VRAM 1 KB (Text mode) or 8 KB (Graphics mode) label value ROM 16 KB label value TEXT MODES 40 chars. x 24 lines label value GRAPHIC MODES 40x48 x 8 colors, 280x192 x 6 colors and 280x192 x 6 colors with text label value COLORS 8 label value SOUND TV (by RF out) label value SIZE / WEIGHT 37.6 (W) x 32 (D) x 6.7 (H) cm label value I/O PORTS 1 expansion slot, rf and composite video (PAL-M), 2 joystick, tape recorder In/Out, 1 parallel. label value BUILT IN MEDIA None label value OS Apple) DOS 3.3 compatible label value POWER SUPPLY external power supply unit (110/220V) label value PERIPHERALS All Apple II expansion cards & peripherals label value PRICE Unknown emulators links 1131 title url platform text TK2000 II Color Computer Emulator http://tk2000.sourceforge.net/ Other platform TK2000 Emulator in Java title url text Clube do TK-90x http://www.tk90x.com.br/TK2000.html detailed differences between TK-2000and Apple II 1161 url date https://web.archive.org/web/20230331033256/http://www.old-computers.com/museum/computer.asp?c=1161 2023-03-31

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.

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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).