BTG _option_reg, 0

bert · Post by **bert** » Thu Dec 27, 2007 3:48 pm

I want to toggle bit 0 of the OPTION_REG register with asm, like this (entered in a C-box):

asm
{
BTG _option_reg, 0
}

but for some reason it gives an arror and won't compile. I think this is valid Microchip assembler. Any (asm) suggestions how to get this to work?

Bert

Post by **Benj** » Mon Dec 31, 2007 10:43 am

Hello Bert

There is a BoostC manual in the Flowcode V3/BoostC directory. This should provide some help.

Do you have to use assembler. Eg here is some C code to do the same function.

Code: Select all

if (test_bit(OPTION_REG , 0))
        clear_bit (OPTION_REG , 0);
else  set_bit (OPTION_REG , 0);

bert · Post by **bert** » Mon Dec 31, 2007 2:12 pm

I will check out the C manual, I didn't even know I had one