INSTRUCTION DESCRIPTIONS
A - 250 INSTRUCTION SET DETAILS MOTOROLA
Explanation of Example: Prior to execution, the 24-bit X0 register contains the value
$000100, and the 16-bit loop counter (LC) register contains the value $0000. The execu-
tion of the REP X0 instruction takes the 24-bit value in the X0 register, truncates the MS
8 bits, and stores the 16 LS bits in the 16-bit loop counter (LC) register. Thus, the single-
word MAC instruction immediately following the REP instruction is repeated $100 times.
Condition Codes:
For source operand A or B:
S — Computed according to the definition. See Notes on page A-255.
L — Set if data limiting occurred. See Notes on page A-255.
For other source operands:
The condition code bits are not affected.
REP Repeat Next Instruction REP
MR CCR
1514131211109876543210
LF DM T ** S1 S0 I1 I0 SLEU NZ VC