Hi all,

I have been using the internal usart on the 16C74 for some time with no
interrupts and with no problems.  I then decided to use the usart with
it's associated interrupt (because of the usart getting 'clogged up' with
un-suspected received bytes).  The problem I have got now is that the
usart doesn't seem to work at all when I try to implement the interrupts.
 When I run my program in MPSIM, it seems that the overrun bit in RCSTA
gets set after a while without doing anything!   Has anyone experienced
this problem?
The interrupt is enabled in take global interrupt reg and pie1 just for
the receiver.  In the ISR, I have tested the interrupt flag and branched
off to read the RCREG if it is set.  Therefor the usart should never get
clogged up with un-suspected incoming bytes.

Any pointers or snippets of code welcome,
Thanks in advance,
Brian.