Zilog Z80380 Bedienungsanleitung PDF herunterladen (Seite 121)

5-87

Z380

™

USER'S MANUAL

ZILOG

DC-8297-03

LD[W]

LOAD REGISTER (WORD)

LD[W] dst,src dst = R

src = R, RX, IR, DA, X, SR

dst = R, RX, IR, DA, X, SR

src = R

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 Register

Addressing Execute

Mode Syntax Instruction Format Time Note

R: LD Rd,Rs 11rs1101 00rd0010 2 L

RX: LD R,RX 11y11101 00rr1011 2 L

IR: LD R,(IR) 11011101 00rr11ri 2+r L

LD RX,(IR) 11y11101 00ri0011 2+r L

DA: LD HL,(nn) 00101010 -n(low)- -n(high) 3+r I, L

LD R,(nn) 11101101 01ra1011 -n(low)- -n(high) 3+r I, L

LD RX,(nn) 11y11101 00101010 -n(low)- -n(high) 3+r I, L

X: LD R,(XY+d) 11y11101 11001011 ——d— 00rr0011 4+r I, L

LD IX,(IY+d) 11111101 11001011 ——d— 00100011 4+r I, L

LD IY,(IX+d) 11011101 11001011 ——d— 00100011 4+r I, L

SR: LD R,(SP+d) 11011101 11001011 ——d— 00rr0001 4+r I, L

LD RX,(SP+d) 11y11101 11001011 ——d— 00100001 4+r I, L

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 267 268

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Zilog Z80380 Bedienungsanleitung Seite 121