Rabbit 2000 - CP (IX+D)

26 Rabbit 2000/3000 Microprocessor
Description
The Carry Flag is inverted: If it is set, it becomes cleared. If it is not set, it becomes set.
Description
Compares the data in the Accumulator with the data whose address is (a) contained in word register HL, (b)
the sum of the data in index register IX plus a displacement value d, or (c) the sum of the data in index register
IY plus a displacement value d.
These compares are accomplished by subtracting the appropriate data ((HL), (IX+d), or (IY+d)) from the
Accumulator. If the value of the data in the Accumulator is less than the value of the data compared, then the
Sign Flag and the Carry Flag are set. If they are equal, the Zero Flag is set. If the data is greater than the data
in the Accumulator, then the Sign, Carry, and Zero Flags are reset. This operation does not affect the data in
the Accumulator.
CCF
Opcode Instruction Clocks Operation
3F CCF 2 CF = ~CF
Flags ALTD I/O
S Z L/V C F R SP S D
- - - • •
CP (HL)
CP (IX+d)
CP (IY+d)
Opcode Instruction Clocks Operation
BE CP (HL) 5 (2,1,2) A - (HL)
DD BE d CP (IX + d) 9 (2,2,2,1,2) A - (IX + d)
FE BE d CP (IY + d) 9 (2,2,2,1,2) A - (IY + d)
Flags ALTD I/O
S Z L/V C F R SP S D
• • V • • •