Cycle Accuracy of AVR
Information:
Type :: BUG
Status :: OPENED
Assigned to ::
Description:
Can you please tell that the AVR core you have designed is cycle accurate or not.
Please see the following code
NOP
NOP
JMP RESET
Increment:
INC R18
NOP
NOP
NOP
RET
RESET:
LDI R16,1
LDI R17,2
ADD R16,R17
NOP
NOP
When the first JMP occurs; the first instruction is LDI R16,1 but it takes 3 more cycle to execute it. If you compare it with AVR Studio this is not the case. In actual it has to consume 3 cycles to execute JMP instruction only. I have added NOPs before LDI but still LDI takes 3 cycles. Any explanation???
Regards
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