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POPM
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Restoring multiple registers from the stack
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POPM
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POP Multiple registers
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[Syntax]
POPM dest-dest2
[Operation]
signed char i;
for ( i = register_num(dest); i <= register_num(dest2); i++ ) {
tmp = *SP;
SP = SP + 4;
register(i) = tmp;
}
[Function]
- | This instruction restores values from the stack to the block of registers in the range specified by dest and dest2. |
- | The range is specified by first and last register numbers. Note that the condition (first register number < last register number) must be satisfied. |
- | The stack pointer in use is specified by the U bit in the PSW. |
- | Registers are restored from the stack from R1 to R15. |
[Instruction Format]
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POPM dest-dest2
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Rd
Rd=R1R14
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Rd2
Rd2=R2R15
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[Flag Change]
- | This instruction does not affect the states of flags. |
[Description Example]
POPM R1-R3
POPM R4-R8