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illegal instruction error when during simulattions. #417

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zenon4689 opened this issue Jun 19, 2024 · 0 comments
Open

illegal instruction error when during simulattions. #417

zenon4689 opened this issue Jun 19, 2024 · 0 comments

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@zenon4689
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zenon4689 commented Jun 19, 2024 •
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hello


I got some issue with simulation.

when i simulation with pulp-rt-example/hello, i got illegal instruction error.



# [PULP] 10169601ns - WRITE32 burst @1c00a000 for         232 bytes.
# [PULP] 10372501ns - WRITE32 burst @1c010000 for         240 bytes.
# [TB  ] 10374101ns - Resuming the CORE
# [TB  ] 10947601ns - retrying debug reg access
# [TB  ] 10976901ns - retrying debug reg access
# [TB  ] 11006201ns - retrying debug reg access
# [TB  ] 11035501ns - retrying debug reg access
# [TB  ] 11064801ns - retrying debug reg access
# [TB  ] 11094101ns - retrying debug reg access
# [TB  ] 11123401ns - retrying debug reg access
# [TB  ] 11152701ns - retrying debug reg access
# [TB  ] 11196701ns - Waiting for end of computation
# [STDOUT-CL31_PE0] [RT(31,0)] WARNING: Reached illegal instruction (PC: 0x1c008e2c, opcode: 0x20230001



like this. i trace the PC 0x1c008e2c, its instruction is c.nop

11275045ns 189420 1c008e2c 00000013 c.nop


why this instruction is illegal?


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