Thanks Darrel, you were right about the chip... the '84A doesn't have the PIR2 register, so it was undefined - this led to two of the errors.

I also found that in the DT_INTS-14.BAS file, I had to change the instances of "L?GoTo" to "LGoTo" to get rid of the other errors.

Now I can't wait to be interrupted!

Thanks again.

------------------Picster-------------------