Memotech is a British company that started out selling expansion modules for the Sinclair ZX Spectrum and ZX81. A U.S. subsidiary began selling the MTX-512 in North America in late 1983 or early 1984. It discontinued the MTX500 in 1985.
Memotech MTX500/MTX512 (June 1983 [MTX500]/early 1984 [MTX512], desktop)
Original Retail Price: $595 (MTX512)
Base Configuration: 4MHz Z80A CPU; ROM cartridge slot; 32K (MTX500)/64K (MTX512) RAM (512K max); 24K ROM; TV and RGB video ports; integral keyboard/keypad; two parallel, two game, and cassette ports; MTX BASIC, MTX Graphics, and MTX Assembler in ROM
Video: 256 x 192 graphics, 16 colors
Important Options: CP/M, one or two external 5.25-inch floppy disk drives, 8-inch floppy disk drive (MTX500), external 5MB hard disk drive, dual RS-232C interface, New Word word processing software, 80-column card, DMX80 printer, Oxford Ring network