Western Digital MCP-1600MCP-1600 microprocessor with WD16 microcode in five 40-pin packages. |
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Launched | 1975; 49 years ago (1975) |
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Common manufacturer | |
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Max. CPU clock rate | to 3.3 MHz |
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Data width | 8 (microdata), 18 (microcode), 16 (macrodata) |
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Address width | 11 (microcode), 16 (macrodata) |
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Number of instructions | 98 |
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Package | |
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Successor | none |
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MCP-1600 registers
15
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14
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13
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12
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11
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10
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09
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08
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07
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06
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05
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04
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03
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02
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01
|
00
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(bit position)
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Register file
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LSI-11 use[1]
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R3
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R2
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PSW
|
R5
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R4
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Destination
|
R7
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R6
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Source
|
R9
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R8
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Bus address
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RB
|
RA
|
Instruction register
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RD/GD
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RC/GC
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R7 (PC)
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RF/GF
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RE/GE
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R6 (SP)
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GB
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GA
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R5
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G9
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G8
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R4
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G7
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G6
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R3
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G5
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G4
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R2
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G3
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G2
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R1
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G1
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G0
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R0
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Control registers
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G
|
Register Pointer
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LC
|
Location Counter
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RR
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Return Register
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TR1
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TR0
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Translation Register
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Status register
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NB
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ZB
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C4
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C8
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N
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Z
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V
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C
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ALU status/Flags
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The MCP-1600 is a multi-chip 16-bit microprocessor introduced by Western Digital in 1975 and produced through the early 1980s.[2][3] Used in the Pascal MicroEngine, the WD16 processor in the Alpha Microsystems AM-100, and the DEC LSI-11 microcomputer,[4] a cost-reduced and compact implementation of the DEC PDP-11.