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Undocumented Math instructions with the IY register

Undocumented math instructions for IY register

Table of Contents

Opcode Matrix
INCDECADD AADC ASUBSBC AANDXORORCP
IYh
INC IYh
FD24
DEC IYh
FD25
ADD A,IYh
FD84
ADC A,IYh
FD8C
SUB IYh
FD94
SBC A,IYh
FD9C
AND IYh
FDA4
XOR IYh
FDAC
OR IYh
FDB4
CP IYh
FDBC
IYl
INC IYl
FD2C
DEC IYl
FD2D
ADD A,IYl
FD85
ADC A,IYl
FD8D
SUB IYl
FD95
SBC A,IYl
FD9D
AND IYl
FDA5
XOR IYl
FDAD
OR IYl
FDB5
CP IYl
FDBD
Opcode Matrix Legend
Instruction Opcode hex
 Undocumented