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LSR (SPC700): Difference between revisions

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!colspan="8"|Flags Clobbered
!colspan="8"|Flags Clobbered
|+
|+
|N
|[[Negative Flag|N]]
|V
|[[Overflow Flag|V]]
|P
|[[Direct Page Flag|P]]
|B
|[[Break Flag|B]]
|H
|[[Half-Carry Flag|H]]
|I
|[[Interrupt Enable Flag|I]]
|Z
|[[Zero Flag|Z]]
|C
|[[Carry Flag|C]]
|+
|+
|
|

Revision as of 05:02, 27 November 2023

Basic Info
Addressing Mode Opcode Length Speed
Accumulator 5C 1 byte 2 cycles
Direct Page 4B 2 bytes 4 cycles
Direct Page Indexed by X 5B 2 bytes 5 cycles
Absolute 4C 3 bytes 5 cycles
Flags Clobbered
N V P B H I Z C
. . . . .

LSR (Logical Shift Right) is an SPC700 instruction that shifts its operand one bit to the right, dividing it by two. The least significant bit is shifted into the carry flag. A zero is shifted into the most significant bit.

The official manual has the bit shift operators for LSR pointing the wrong way.

See Also

External Links