[Libre-soc-bugs] [Bug 230] Video opcode development and discussion

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=230

--- Comment #28 from cand at gmx.com ---
> the other one involves 32-bit src and 128-bit dest so i'll need to think about it.

Please tell me which part is the hangup, so I'll know for future instrs.
- implementation complexity
- complexity when trying to write 128b in one clock (so do it more, 128: two
clocks, <= 64: one clock, 256: 4 clocks)
- writing that much in one instr in general

For this specific case, 32-to-32 would have use, but not the majority.
Handwaving 40% would be 32-to-32, where most would be 32-to-16 (aka read 32,
write 64). I'd still like to have 32-to-32, but depends on what the tradeoff
is.

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