Maxim Integrated MAXQ Family - Manual (Page 203)

18-26
MAXQ Family User’s Guide
(MAXQ10 Version) Rotate Left Accumulator
RL/RLC Carry Flag (Ex/In)clusive
Description: Rotates the active accumulator left by a single bit position. The RL instruction circulates the msb of the accumula-
tor (bit 7) back to the lsb (bit 0) while the RLC instruction includes the Carry (C) flag in the circular left shift.
Status Flags: C (for RLC only), S, Z (for RLC only)
RL Operation: 7 Active Acc 0
Acc.[7:1] ← Acc.[6:0]; Acc.0 ← Acc.7
Encoding: 15 0
Example(s): ; Acc = A3h, S=1, Z=0
RL ; Acc = 47h, S=0, Z=0
RL ; Acc = 8Eh, S=1, Z=0
RLC Operation: 7 Active Acc 0 Carry Flag
Acc.[7:1] ← Acc.[6:0]; Acc.0 ← C; C ← Acc.7
Encoding: 15 0
Example(s): ; Acc = A3h, C=1, S=1, Z=0
RLC ; Acc = 47h, C=1, S=0, Z=0
RLC ; Acc = 8Fh, C=0, S=1, Z=0
1000 1010 0100 1010
1000 1010 0101 1010
Maxim Integrated