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The MCP-1600 was a multi-chip microprocessor made by Western Digital in the late 1970s through the early 1980s. Used in the Pascal MicroEngine, the original Alpha Microsystems AM-100, and the DEC LSI-11 microcomputer, a cost-reduced and compact implementation of the DEC PDP-11. There were three types of chips in the chip-set: * CP1611 RALU - Register ALU chip * CP1621 CON - Control chip * CP1631 MICROM - Mask-programmed microcode ROM chip (512 – 22 bit words) The chips used a 3.3MHz four phase clock and four power supply voltages (+5V, +12V, -12V, and -5V). Internally the MCP-1600 was a (relatively fast) 8-bit processor that could be micro-programmed to emulate a 16-bit CPU. Up to four MICROMs were supported, but usually two or three could hold the needed microprogram for a processor. ==External links== * http://www.antiquetech.com/chips/CP1600.htm 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「MCP-1600」の詳細全文を読む スポンサード リンク
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