Adc a, s – Zilog Z08470 User Manual
Page 161
UM008007-0715
Z80 Instruction Description
Z80 CPU
User Manual
149
ADC A, s
Operation
A ← A + s + CY
Op Code
ADC
Operands
A, s
This s operand is any of r, n, (HL), (IX+d), or (lY+d) as defined for the analogous ADD
instruction. These possible op code/operand combinations are assembled as follows in the
object code:
1
0
0
0
1
r*
1
1
0
1
0
1
0
1
CE
n
1
0
0
1
0
1
0
1
8E
1
1
1
1
0
1
0
1
DD
1
0
0
1
0
1
0
1
8E
d
1
1
1
0
1
1
1
1
FD
1
0
0
1
0
1
0
1
8E
d
ADC A,r
ADC A,n
ADC A, (HL)
ADC A, (IX+d)
ADC A, (IY+d)