Am I reading this assembler correctly?

[Darrel Taylor]

Really Darrel, You always seem to spot the errors quick.

It's a Curse, really.

I can spot things in other peoples programs like it's got a blinking red light on it.
But in my own programs, it can take weeks to find a simple bug.

er - ok well I think it works that way for everyone. I just never ask for help.

If you have any other nasties you can see in that code please tell me.

Well, if it's turning smoothly then I think the "Nasties" are gone. But I might be able to make some new ones for you.

Sorry, my other curse is the need to reduce redundant code (RRC).
So here's my idea.

Qstep  VAR BYTE
Coils  VAR BYTE

StepForward:
    Qstep = Qstep + 1
    IF Qstep >= 16 THEN Qstep = 0
    GOTO DoStep

StepReverse:
    IF Qstep = 0 then Qstep = 16
    Qstep = Qstep - 1
      
DoStep:
    LOOKUP Qstep,[%001101,%001111,%001100,%001010,%101000,%111000,%100000,%010000 _
                 ,%000100,%000110,%000101,%000011,%100001,%110001,%101001,%011001], Coils
    PORTB = (PORTB & %11000000) | Coils
    PAUSEUS TIME
RETURN

Completely un-tested.