> I am using the PIC16F877 and planing to use its SPI to
> send out data only (no receive data).  Can I use the
> SPI DI pin (RC4) as an output (I want to use this for
> Chip Select signal)

Yes, see section 16.3.2, "Enabling SPI I/O", of the
Midrange Manual. It's a little clearer than the 877
manual

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