Thanks for the reply. I figured I needed to provide more information than I did. :) Sorry about that.

For now, I am JUST trying to transmit...really simple. I have some of my code and some other person's code so things might be hairy because of that...

I am setting the Transmit Interrupt bit in the serial port initialization. As far as I understand, that takes me to the ISR right away, which clears the Interrupt Flag and then sets a TXFlag (another variable). When I call the actual senddata function, it checks whether TXFlag is set (it should be) and then writes a byte (0xff) to the SBUF0 register.

But for some reason, it isn't even going into the ISR when I set T1 myself the first time during initialization. Makes me wonder if there is a way to ENABLE the serial interrupt, or a different way to call the ISR than I did.

Please let me know what you think.