
5-68
Z380
™
USER'S MANUAL
DC-8297-03
ZILOG
INA
INPUT DIRECT FROM PORT ADDRESS (BYTE)
INA A,(nn)
Operation: A ← (nn)
The byte of data from the selected peripheral is loaded into the accumulator. During the
I/O transaction, the peripheral address from the instruction is placed on the address bus.
Any bytes of address not specified in the instruction are driven on the address lines as all
zeros.
Flags: S: Unaffected
Z: Unaffected
H: Unaffected
V: Unaffected
N: Unaffected
C: Unaffected
Addressing Execute
Mode Syntax Instruction Format Time Note
INA A,(nn) 11101101 11011011 -n(low)- -n(high) 3+i I
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