Zilog Z80380 - Manual (Page 123)

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Z380 ™
U SER ' S M ANUAL Z ILOG
DC-8297-03
LD
LOAD STACK POINTER
LD dst,src dst = SP
src = R, RX, IM, DA
or
dst = DA
src = SP
Operation: if (LW) then begin
dst(31-0)
←
src(31-0)
end
else begin
dst(15-0)
←
src(15-0)
end
The contents of the source are loaded into the destination.
Flags: S: Unaffected
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Load into Stack Pointer
Addressing
Execute
Mode Syntax Instruction Format Time Note
R: LD SP,HL 11111001 2 L
RX: LD SP,RX 11y11101 11111001 2 L
IM: LD SP,nn 00110001 -n(low)- -n(high) 2 I, L
DA: LD SP,(nn) 11101101 01111011 -n(low)- -n(high) 3+r I, L
Field Encodings: y: 0 for IX, 1 for IY
Load from Stack Pointer
Addressing
Execute
Mode Syntax Instruction Format Time Note
DA: LD (nn),SP 11101101 01110011 -n(low)- -n(high) 4+w I, L