Subroutine executes on one time

aa200orion

I'm new to the BSSX world and it has been many years since I did any programming.· I'm trying to generate a data string that consists of a sync pulse, an 8-bit data field, an 11-bit data field, and a 3-bit suffix code.· I'm programming in stages to learn the SX/B language and become familiar with the BSSX.· The code I have written is attached.· The part I'm having trouble with is the FOR loop in the NIDEK_CODE subroutine.· It only exceutes once.· Any help will be appreciated.

Jimmy

Zoot

Your logic is flawed. You JUMP while in your for/next code, which is a subroutine. Since the the two jump locations are also subs, when they finish, the RETURN is really for the FIRST sub called -- NIDEK. You should probably change the the jumps to GOSUB (or CALL @ in ASM), e.g.

SUB    NIDEK_CODE
    HIGH LED    
    ASM    CLC
    ENDASM
    
    FOR idx =1 to 9
        ASM    
            RR NIDEKCODE
            JC    @GoSu_OutOne
            ' JMP    OUTZERO  now not needed as outzero follows
            
        ENDASM


             GoSu_OutZero:
                OUTZERO
                GOTO FNdone

             GoSu_OutOne:
                OUTONE

         
          FNdone:

    NEXT

ENDSUB

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PJMonty

Jimmy,

A "jmp" is simply a "GOTO", and you aren't allowed to "jmp" or "GOTO" from one routine into the middle on another routine - unless you want your program to crash. Zoot's approach is correct except that instead of saying you should "probably" change the jumps to GOSUBs, he should have said you need to change your jumps to GOSUBs.

Thanks,
PeterM

aa200orion

Thanks guys.· Another day when I learn something.



Jimmy