Zilog Z80380 - Manual (Page 199)

5-165
Z380 ™
U SER ' S M ANUAL Z ILOG
DC-8297-03
SLA
SHIFT LEFT ARITHMETIC (BYTE)
SLA dst dst = R, IR, X
Operation: tmp
←
dst
C
←
dst(7)
dst(0)
←
0
dst(n+1)
←
tmp(n) for n = 0 to 6
The contents of the destination operand are shifted left one bit position. Bit 7 of the
destination operand is moved to the Carry flag and zero is shifted into bit 0 of the destination.
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 shifted from bit 7 was a 1; cleared otherwise
Addressing Execute
Mode Syntax Instruction Format Time Note
R: SLA R 11001011 00100-r- 2
I R: SLA (HL) 11001011 00100110 2+r
X: SLA (XY+d) 11y11101 11001011 ——d— 00100110 4+r I
Field Encodings: r: per convention
y: 0 for IX, 1 for IY