Instruction Reference Manual 101
Description
• OR IX,DE: Performs a logical OR operation between the data in IX and the data in DE. The
result is stored in IX
• OR IY,DE: Performs a logical OR operation between the data in IY and the data in DE. The
result is stored in IY
The relative bits of each byte are compared (i.e., the bit 1 of both bytes are compared, the bit 2 of both bytes
are compared, etc.) and the associated bit in the result byte is set if either of the compared bits is set.
OR IX,DE
OR IY,DE
Opcode Instruction Clocks Operation
DD EC OR IX,DE 4 (2,2) IX = IX | DE
FD EC OR IY,DE 4 (2,2) IY = IY | DE
Flags ALTD I/O
S Z L/V C F R SP S D
• • L 0 •