[Coco] Assembly timing question

[L. Curtis Boyle]

,x+ is an autoincrement mode.
leay [offset],y will very in cycles depending on the number in [offset]. 16 bit will take the longest, 8 bit next, and then 5 bit.

(Hope I am remembering these correctly - going completely from memory here, and don’t have any documentation with me at the moment).

L. Curtis Boyle
curtisboyle at sasktel.net



> On Mar 21, 2016, at 7:53 PM, Lee Patterson <lee at 8bitcoder.com> wrote:
> 
> Looking at 6809 Assembly Language Programming by Leventhal, and trying to figure out cycle counts. Addressing modes 
> 
> 1) What addressing mode is LDA ,X+ using? I think it's extended direct addressing, which is 5 cycles.
> 2) leay 1,y is listed as 4+ cycles. How do I know how many the "+" is?
> 
> Thanks,
> Lee
> 
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