ZiLOG Z80380 User Manual page 158

Z
ILOG
OUT0
OUTPUT (TO PAGE 0)
OUT0 (n),src
(n) ← src
Operation:
The byte of data from the source register is loaded into the selected on-chip peripheral. No
external I/O transaction will be generated as a result of this instruction, although the I/O
address will appear on the address bus and the write data will appear on the data bus while
this internal write is occurring. The peripheral address is placed on the low byte of the
address bus and zeros are placed on all other address lines.
S: Unaffected
Flags:
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Addressing
Mode Syntax
R: OUT0 (n),R
Field Encodings: r: per convention
5-124
src = R
Instruction Format
11101101 00-r-001 ——n—
Execute
Time Note
3+o
DC-8297-03
Z380 ™
U ' M
SER S ANUAL