How to combine TMR0H + TMR0L into a 16 bit variable using XC8

[Bruce Abbott]

Getting slightly off topic because DTJ only wanted to read Timer0 in a much simpler way, but here is what WRITETIMER0(counts) becomes:-

 

Code: [Select]

TMR0H=counts>>8,TMR0L=counts&0xFF;

  3FA4    5006     MOVF 0x6, W, ACCESS
  3FA6    6ED7     MOVWF 0xfd7, ACCESS
  3FA8    C005     MOVFF 0x5, 0xfd6
Not quite as compact as handcrafted assembler, but pretty close!

[Ian.M]

What XC8 compiler version, mode and optimisation level produced that?

[Bruce Abbott]

XC8 V1.35 in 'free' mode, via MPLAB IDE V8.92