@oe1cxw This is an odd question, and kinda high priority for a presentation, but would you accept a PR to increase the number of QREGs from 2 to 3 (or 4).
The context is I need a third "long lived" register for IRQ handling.
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Sorry 2 scratch QREGs to 3-4 scratch QREGs.
2 scratch qregs is more than enough. Everything else can be done in global memory.
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I need to share a pointer between a bootloader and a payload (two different C programs with two different variable layouts) so I can revector the hardcoded IRQ vector. In any case, I just figured out how to solve my problem with 2 scratch QREGs... _I think_...
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Yea, sorry, I messed up. It was doable w/ 2 scratch QREGs. Although the solution isn't as neat as I'd like it to be. I had to save some regs twice on IRQ entry until I can figure out what lw/sws can be safely removed. q2 squirrels away my reprogrammable IRQ vector...
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