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retd
Function
Return from a debug-interrupt handler routine
Standard)
Extension 1) Unusable
Extension 2) Unusable
15 14 13 12 11 10
Code
0
0
0
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IL
IE
C
Flag
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↔ ↔ ↔ ↔ ↔ ↔
Mode
–
CLK
Four cycles
Description
Restore the contents of the R0, PSR, and PC that were saved to the work area for debugging
(DBRAM) when an debug interrupt occurred to the respective registers, and return from the debug
interrupt handler routine.
This instruction is provided for debug firmware. Do not use it in the user program.
Example
retd
S1C17 CORE MANUAL
(Rev. 1.2)
r0 ← A[DBRAM + 0x4](23:0), {psr, pc} ← A[DBRAM + 0x0]
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8
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6
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0
0
0
0
1
0
1
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V
Z
N
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; Return from a debug interrupt handler routine
Seiko Epson Corporation
5
4
3
2
1
0
1
0
1
0
0
0
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7 DETAILS OF INSTRUCTIONS
7-115
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