PBP 2.6C assembler

[Demon]

You need to determine which you are using; PM or MPASM assembler.

I doubt they use the exact same commands/syntax. I suspect you are using PM. MPASM is the preferred assembler today.

Robert

[Archangel]

Should be it. ww1.microchip.com/downloads/en/devicedoc/31029a.pdf

[comwarrior]

PIC is 18F46K22 @ 64MHz...
Compiler is MPASM...

Basically, i'm looking into an asm piece of coding to create correct timings for the WS2812B LEDs...
When i used PBP to spit out the wave form from an arry the IF statement killed the timings. I appears to take ~30 cycles to run one command...

The bit that i'm after is as follows...

00134	IF BSPTR < (NOOFWS2812 * 3 * 8) THEN
	CMPGE?WCL	_BSPTR, 0F0h, L00007

First line being the PBP line and the second line being the resultant assembler.
The problem is I can not find any reference to what "CMPGE?WCL" is?

I think, it's some sort of ALU compare with condition jump... but why is it taking so darn long on a high end MCU...

[comwarrior]

never mind... i just realised some of these commands are actually macros... thats why i can't find them...

[comwarrior]

ok, nope i'm lost again...

The macro for CMPGT?WCL is...

CMPGT?WCL macro Win, Cin, Label
    if ((Cin) < 0)
        L?GOTO  Label
    else
      if ((Cin) < 0ffffh)
        MOVE?WW Win, R0
        MOVE?CB (Cin) >> 8, R1 + 1
        MOVE?CA low (Cin)
        L?CALL  CMPGT
        BIT?GOTO 0, STATUS, Z, Label
      endif
    endif
    endm

So what is MOVE?WW, MOVE?CB and MOVE?CA oh and L?CALL and BIT?GOTO... Like... seriously!

[Demon]

Total guess; math calculations in IF?

Robert

[HenrikOlsson]

Hi,

o what is MOVE?WW, MOVE?CB and MOVE?CA oh and L?CALL and BIT?GOTO... Like... seriously!

They are more macros, move word to word, move constant to byte and so on. You should be able to find the actual code that those macros consists of at the same place you found the code for "top level" CMPGT?WCL macro.

/Henrik.