Zilog Z08470 - Manual (Page 204)

Z80 Instruction Set UM008007-0715
192
Z80 CPU
User Manual
ADD IX, pp
Operation
IX ← IX + pp
Op Code
ADD
Operands
IX, pp
Description
The contents of register pair pp (any of register pairs BC, DE, IX, or SP) are added to the
contents of Index Register IX, and the results are stored in IX. In the assembled object
code, operand pp is specified as follows:
Condition Bits Affected
S is not affected.
Z is not affected.
H is set if carry from bit 11; otherwise, it is reset.
P/V is not affected.
Register
Pair ss
BC
00
DE
01
IX
10
SP
11
M Cycles T States 4 MHz E.T.
4 15 (4, 4, 4, 3) 3.75
1 1 1 0 1 1 0 1 DD
0 0 p 0 1 0 p 1