In SX Microcontrollers, SX/B Compiler and SX-Key Tool, dkemppai wrote:

OK, I'm having a mental block...
 

What's the fastest way in ASM to toggle an I/O pin or register bit, knowing only the pin or bit in question. 

 

For example, RA.4 needs to be toggled every time I run a sub. What's the least amount of code to do this. 

I can read the state of the pin from the I/O registers or register.  The pin/bit doesn't change often, but when I need 

to change it I need to conserve clock cycles...

 

Also, Jitter is not a concern. 

 

Thanks,

Dan

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