Freescale-semiconductor StarCore SC140 Manual do Utilizador Página 525

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JMPD
SC140 DSP Core Reference Manual A-211
JMPD Jump Using a Delay Slot (AGU) JMPD
Description
Status and Conditions that Affect Instruction
None.
Status and Conditions Changed by Instruction
None.
Example
jmpd lbl
Operation Assembler Syntax
label PC
JMPD label {0 label < 2
32
,W}
RnPC
JMPD Rn
JMPD label
Jumps to an absolute memory destination address specified by a label after executing the execution set in
the delay slot. The assembler and the linker calculate the destination address from the label. The
destination address cannot be in the middle of an execution set.
JMPD Rn
Jumps to a memory address specified by an address register (Rn) after executing the execution set in the
delay slot. The value in Rn must be word-aligned.
Instruction Comment
move.w #$35,d0 Places $35 in d0.
jmpd lbl move.w #$29,d1 Jump to lbl, move.w executed.
inc d1 Increment executed in the delay slot, d1 = $2A.
move.w #$20,d3 Skipped over.
- - - - Skipped over.
- - - - Skipped over.
- - - - Skipped over.
lbl move.w #$16,d4 Execution continues here at lbl.
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