ZiLOG eZ80 User Manual page 278

OUT (n), A
Output to I/O
Operation
({UU, A, n}) ← A
Description
The n operand is placed on the lower byte of the address bus, ADDR[7:0]. The CPU
places the contents of the accumulator, A, onto the middle byte of the address bus,
ADDR[15:8]. The upper byte of the address bus, ADDR[23:16] is undefined for I/O
addresses. The CPU next outputs the contents of the accumulator to this I/O address.
Condition Bits Affected
None.
Attributes
Mnemonic Operand
OUT
UM007714-0908
ADL Mode Cycle Opcode (hex)
(n),A X 3
D3, nn
®
eZ80 CPU
User Manual
269
CPU Instruction Set