INSTRUCTION DESCRIPTIONS
MOTOROLA INSTRUCTION SET DETAILS A - 37
Condition Codes:
S — Computed according to the definition in A.5 CONDITION CODE COMPUTATION
L — Set if limiting (parallel move) or overflow has occurred in result
E — Set if the signed integer portion of A or B result is in use
U — Set if A or B result is unnormalized
N — Set if bit 55 of A or B result is set
Z— Set if A or B result equals zero
V — Set if bit 55 of A or B result is changed due to left shift
C — Set if bit 55 of A or B was set prior to instruction execution
Note: The definitions of the E and U bits vary according to the scaling mode being used.
Refer to Section A.5 for complete details.
Instruction Format:
ASL D
Opcode:
Instruction Fields:
Dd
A0
B1
Timing: 2+mv oscillator clock cycles
Memory: 1+mv program words
MR CCR
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LF DM T ** S1 S0 I1 I0 SLEUNZVC
23 8 7 4 3 0
DATA BUS MOVE FIELD 0011d010
OPTIONAL EFFECTIVE ADDRESS EXTENSION
ASL Arithmetic Shift Accumulator Left ASL