Won't this add an extra 64x4 bytes to the program's addressibility? Brian
On Sun, 30 Nov 2025 09:54:11 -0000, Jonathan Scott <[email protected]> wrote: >Overlapping MVC where the overlap is not just 1 byte is likely to be much >slower than an ordinary MVC, as it is less likely to be handled in an >optimised way. > >I think the fastest solution would be one ordinary MVC per 256 bytes, >something like the following (using the same literal in both cases to avoid >needing a second one, even though the second move is less than 256 bytes): > MVC P1(256),=64PL4'0' > MVC P1+256(104*4-256),=64PL4'0' > >I had an ASSERT macro to verify assembly-time assumptions, so I'd add >something like ASSERT L'P1,EQ,4 in this case. If you don't have an equivalent >macro, you can at least use this: > DC 0SL2(L'P1-4,4-L'P1) Verify assumption that L'P1 is 4 > >[I'm retired now so the above is all from memory and has not been tested]. > >Jonathan Scott
