[Coco] Quick 6809 Q for night owls in the US

tim at franklinlabs.com tim at franklinlabs.com
Tue Apr 15 09:24:57 EDT 2014


I'm not at home to test but wouldn't this work??/

                LDU    #1000
LOOP:    LEAU    -1,U
                BNE    LOOP

All inside the CPU.




On April 15, 2014 at 9:19 AM Mark McDougall <msmcdoug at iinet.net.au> wrote:
> How would one write a (tight) loop, say a few thousand iterations in 6809
> assembler? Can it be done with the X/Y registers? D? Or do I need a memory
> variable? It's for a delay...
>
> Regards,
>
> --
> | Mark McDougall | "Electrical Engineers do it
> | <http://members.iinet.net.au/~msmcdoug> | with less resistance!"
>
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