TGO Electronica wrote:
> Hello,
> 
> I have been programming this PIC for several years without a problem, until 
> now, that we got a new batch of PIC18F2610s date coded 0804.
> 
> Same program, same configuration, same board, same programmer, etc... Older 
> PICs dated 04XX up to 07XX work perfect, only the new ones we got don't 
> work.
> 
> I have isolated the problem to PortA. For example:
> 
> PortA configured as Digital I/O (no analog inputs) ADCON1=B'00111111'
> bsf PORTA,3
> bsf PORTA,5
> after executing this instructions PORTA,3 is LOW (!!!) and PORTA,5 is HIGH

What happens after

bsf PORTA, 3
nop
nop
bsf PORTA, 5

?

Jan-Erik


> 
> but if I reverse the instructions:
> bsf PORTA,5
> bsf PORTA,3
> both PORTA,3 and PORTA,5 are HIGH
> 
> I may have been doing something wrong and never showed up until these new 
> PICs or something changed on the silicon, that I have not been able to 
> pinpoint in the erratas. So any help will be greatly appreciated.
> 
> Gabriel
> TGO 
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