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The Memotech company started manufacturing expansion cards and high quality memory modules for the Sinclair ZX 81 home computer.
The British Memotech MTX 512 has a hardware which looks like the Sord M5. It also has characteristics, which are close to the MSX standard, but is not MSX compatible.
It uses a dedicated chip for video (Texas Instrument TM 9918 or 9928) and sound (TI 76489) and has a very nice mechanical keyboard and a nice black aluminum case!
Both models have the same characteristics, but the MTX 500 has only 32 KB RAM and the 512, 64 KB. It had no success and was replaced a short time later by the RS-128.
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| Data Sheet |
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Operating System |
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CP/M |
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Processor |
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4 MHz Zilog Z80 A |
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Sound |
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3 voices / 6 octaves |
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RAM |
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64 KB (up to 512 KB) |
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Resolution |
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max: 256 x 192 |
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Color |
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16 maximum |
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IO Ports |
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RGB, Joystick (2), Cartridge, Tape, Audio, Centronics, User Port |
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Media |
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Tape |
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Release Date |
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1983 |
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Language |
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BASIC, LOGO, NODDY (interactive sequential controller, Z80 Assembler/Disassembler |
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| Emulator |
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Microtan 65 uses MESS, a free emulator
for a large variety of different systems. Its main purpose
is to be a reference to the inner workings of the emulated
systems. This is done for educational purposes
and to preserve many historical games.
MESS BIOS File:
MXT512
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Download Emulator
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Continue to ROMs
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