Zilog Z80380 Manuale Utente Pagina 158

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Z380
USER'S MANUAL
DC-8297-03
ZILOG
OUT0
OUTPUT (TO PAGE 0)
OUT0 (n),src src = R
Operation: (n) src
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.
Flags: S: Unaffected
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Addressing Execute
Mode Syntax Instruction Format Time Note
R: OUT0 (n),R 11101101 00-r-001 ——n— 3+o
Field Encodings: r: per convention
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