Doh!
Before asking this question (and thus seeming very silly) I had a look in
the 877 data sheet and as it only mentions using indirect addressing to
write data I wondered if reading wasn't supported. I had a fiddle under
MP-SIM by setting the FSR and reading the INDF and it didn't work. That's
when I presumed that it wasn't directly supported... Looking back it was
probably a coding error like writing movf INFD,0 instead of INFD,1 (small
difference, big error!). Now I've gone back after all the discussions and it
works just fine. I guess sometimes 2+2 really is 5 because one of the 2s is
a 3!!!

Ben

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