ZiLOG Z80380 User Manual page 182

Z
ILOG
RLCW
ROTATE LEFT CIRCULAR (WORD)
RLCW dst
Operation: tmp
C
dst(0)
dst(n+1)
The contents of the destination operand are rotated left one bit position. The most significant
bit of the destination operand is moved to the bit 0 position and also replaces the Carry flag.
Flags: S: Set if the most significant bit of the result is set; cleared otherwise
Z: Set if the result is zero; cleared otherwise
H: Cleared
P: Set if parity of the result is even; cleared otherwise
N: Cleared
C: Set if the bit rotated from the most significant bit was a 1; cleared otherwise
Addressing
Mode Syntax
RLCW R
R:
RX: RLCW RX
IR: RLCW (HL)
X: RLCW (XY+d)
Field Encodings: rr: 00 for BC, 01 for DE, 11 for HL
y: 0 for IX, 1 for IY
5-148
dst = R, RX, IR, X
← dst
← dst(15)
← tmp(15)
← tmp(n) for n = 0 to 14
Instruction Format
11101101 11001011 000000rr
11101101 11001011 0000010y
11101101 11001011 00000010
11y11101 11001011 ——d— 00000010
U
SER
Execute
Time Note
2
2
2+r
4+r I
DC-8297-03
Z380 ™
' M
S ANUAL