21 Jun
2005
21 Jun
'05
7:16 a.m.
>>>> "Johnny" == Johnny Billquist
<bqt at Update.UU.SE> writes:
Johnny> Mentec implemented one additional instruction that really is
Johnny> useful, and which atleast RSX will use, if it finds it, and
Johnny> that is a block copy instruction. I don't even know if it has
Johnny> a mnemonic. Moving large chunks of memory is something the
Johnny> systems does a lot in I/O, so that really helps if it can be
Johnny> done faster.
Is that just the MOVC instruction (part of the CIS optional set) or
something else? If CIS is present, RSTS will use MOVC for block move
automatically.
paul