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Set set bit – Zilog Z80380 User Manual

Page 197

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Z380

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U

SER

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M

ANUAL

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ILOG

DC-8297-03

SET

SET BIT

SET b, dst

dst = R, IR, X

Operation:

dst(b)

←

1

The specified bit b within the destination operand is set to 1. The other bits in the destination
are unaffected. The bit to be set is specified by a 3-bit field in the instruction; this field
contains the binary encoding for the bit number to be set. The bit number b must be between
0 and 7.

Flags:

S:

Unaffected

Z:

Unaffected

H:

Unaffected

V:

Unaffected

N:

Unaffected

C:

Unaffected

Addressing

Execute

Mode

Syntax

Instruction Format

Time

Note

R:

SET b,R

11001011 11bbb -r-

2

IR:

SET b,(HL)

11001011 11bbb110

2+r

X:

SET b,(XY+d)

11y11101 11001011 ——d— 11bbb110

4+r

I

Field Encodings:

r:

per convention

y:

0 for IX, 1 for IY

See also other documents in the category Zilog Sensors: