>Although I have not done it myself, it would seem that the 16C74 can, already,
>do most of the work for master-mode I2C if you don't mind sacrificing an I/O
>pin.  Simply send the start condition manually, then use the SPI hardware to
>clock out 8 bits, then do the acknowlegement by hand, then clock in or out 8
>more bits, etc.

This might actually work.  I would try setting the SDO line to input during
a read operation, so as to allow the SDI line to get the data from the slave
chip.  If I recall, the TRIS registers must be set properly during SPI I/O.

Andy
==================================================================
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
          Hardware & Software for Industry & R/C Hobbies
        "Go fast, turn right, and keep the wet side down!"
==================================================================