16F87 Internal Frequency setting

[bwhiten]

CCS version 3.178, I am having difficulty changing the internal clock source from INTRC (31.25KHz) to INTOSC (variable up to 8MHz). I can't update for free to the newest version so I believe I need to write to the OSCCON register (ox8F) in my code to change the frequency selection. I need some help writing to this register. What write function should I use and how does the 0x8F register address translate? Thanks for any help.

[Mark]

Use the #byte statement

#byte OSCCON = 0x8F

Now OSCCON can be treated as a variable.

OSCCON = 0;
bit_set(OSCCON,0);
bit_clear(OSCCON,0);

[bwhiten]

Thanks again Mark. The 16F87 is now running at 8MHz with the internal clock.