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MCF5307, strange vector 63 (reserved) interrupt

Question asked by Angelo Dureghello on Aug 16, 2011
Latest reply on Aug 20, 2011 by Angelo Dureghello

Hi all,

 

i am testing u-boot bootloader with this cpu, it works quite fine, but after some time (between half an hour and 2 hours) i get a misterious interrupt 63, followed then by a vector 4 exception:

 

[code]

amcore$
Bogus External Interrupt Vector 63


*** Unexpected exception ***
Vector Number: 4  Format: 04  Fault Status: 0

PC: 00ff26be    SR: 00002004    SP: 00ed8a60
D0: 0000000c    D1: 00000002    D2: 00000008    D3: 00000008
D4: 00ed8aec    D5: 00ed8ae8    D6: 00ff

*** Unexpected exception ***
Vector Number: 4  Format: 04  Fault Status: 0

PC: 00fe9d36    SR: 00002700    SP: 00ed8808


[/code]

 

I am wandering what interrupt 63 is, something undocumented since it is reserved and there is no lecterature that talk about it.

 

every help is appreciated,

 

thanks,

angelo

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