beautypg.com

Inw input (word) – Zilog Z80380 User Manual

Page 99

background image

5-65

Z380

U

SER

'

S

M

ANUAL

Z

ILOG

DC-8297-03

INW

INPUT (WORD)

INW dst,(C)

dst = R

Operation:

dst(15-0)

(C)

The word of data from the selected peripheral is loaded into the destination register. During
the I/O transaction, the contents of the 32-bit BC register are placed on the address bus.

Flags:

S:

Set if the input data is negative; cleared otherwise

Z:

Set if the input data is zero; cleared otherwise

H:

Cleared

P:

Set if the input data has even parity; cleared otherwise

N:

Cleared

C:

Unaffected

Addressing

Execute

Mode

Syntax

Instruction Format

Time

Note

R:

INW R,(C)

11011101 01rrr000

2+i

Field Encodings:

rrr: 000 for BC, 010 for DE, 111 for HL