Rabbit SBC BL4S200

I want to use SPI in my board BL4S200, the sample showed
PB7 acts as the CS line on the ADC
PB0 is the serial B clock line(SCLK)

PC4 is the data output(MOSI)
PC5 is the data input(MISO)

Not sure where are PB7,PB0, PC4, PC5 ? please help. Thanks

Have a look at the circuit diagram here:



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Page 25 of the manual shows the pinouts for the BL4S200.