using tmr0 overflow for higher counts

[anestho]

Hi, I am using PIC 12F683 which has 3 timers. timer1 is 16 bit, but I am using it for another purpose. I am trying to use timer0 for higher than 255 counts prescaled at 1:8. Its okay if it overflows, because I check for overflow and add 256 to the count. The counter holds 16 bits.

QUestion... is there any faster way to increment the 16 bit variable than just adding the 256 to the total?

[PCM programmer]

It is fast. To see this, make a test program and look at the .LST file.
The compiler doesn't do a full 16-bit add of 0x100. It just adds 1 to the MSB.

Here's the code from the .LST file:

[anestho]

Thank you!