I think this is borderline retro, SPARC is in the past it seems...
I'm reading over the SPARC instruction set, which is confusing because every reference I find mixes "real" instructions and the assembler macros, and/or just leaves out whole groups of instructions. The first two sites I went to didn't even list a shift.
But one thing I can't find anything about is the coprocessor instructions. There's not that many of them, and they largely map over the FPU instructions, but there's a queue register which is ... what exactly?
Maybe I'm using the wrong google keywords, but I can't find anything that used these instructions. Anyone have some examples?