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The Epson QX-10 is a microcomputer running CP/M or TPM-III
(CP/M-80 compatible) which was introduced in 1983.
It was based on a Zilog Z80 microprocessor,
running at 4 MHz, provided up to 256K of RAM
organized in four switchable banks,
and included a separate graphics processor chip (µPD7220)
manufactured by NEC to provide advanced graphics capabilities.