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PAC
Load Accumulator With Product Register
7-134
Syntax PAC
Operands None
Opcode
0123456789101112131415
1100000001111101
Execution Increment PC, then ...
shifted (PREG) → ACC
Status Bits
Affected by
PM
Description The content of PREG, shifted as specified by the PM status bits, is loaded into
the accumulator.
Words 1
Cycles for a Single PAC Instruction
ROM DARAM SARAM External
1 1 1 1+p
Cycles for a Repeat (RPT) Execution of a PAC Instruction
ROM
DARAM SARAM External
n n n n+p
Example PAC ;(PM = 0: no shift of product)
Before Instruction After Instruction
PREG 144h PREG 144h
ACC X 23h ACC X 144h
CC
Cycles