>Has anyone had problems with the IBF, OBF and/or IBOV flags getting set
>erroneously when operating the parallel port in polled mode (not using the
>PSPIF bit/interrupt) in the 16C64?
>
>I see the IBOV flag getting set when the host is reading the PIC's output
>register (in a polling loop), than when the host writes to the PIC, the new
>data is not transferred to the PIC's input register and the PIC ends up with
>the same data from the last legitimate write.
>
>thanks,
>Gary