cp

Operands

Subtracts B from A and affects flags according to the result. A is not modified.

Variants

Every form of cp the assembler accepts. The cycles column counts clock cycles, written as taken/not taken for the conditional forms.

Instruction	Description	Flags	Bytes	Cycles
cp b	Subtracts B from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp c	Subtracts C from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp d	Subtracts D from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp e	Subtracts E from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp h	Subtracts H from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp l	Subtracts L from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp (hl)	Subtracts (HL) from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	7
cp a	Subtracts A from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	1	4
cp ixh undocumented	Subtracts IXH from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	2	8
cp ixl undocumented	Subtracts IXL from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	2	8
cp (ix+dd)	Subtracts the value pointed to by IX plus `dd` from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	3	19
cp iyh undocumented	Subtracts IYH from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	2	8
cp iyl undocumented	Subtracts IYL from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	2	8
cp (iy+dd)	Subtracts the value pointed to by IY plus `dd` from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	3	19
cp nn	Subtracts `nn` from A and affects flags according to the result. A is not modified.	CN=1P/V=VHZS	2	7