MISC instruction set
- To: misc
- Subject: MISC instruction set
- From: Alan DeMars <alan@xxxxxxxxxxxxxxxxxxx>
- Date: Thu, 19 Dec 1996 18:51:57 -0800
- Reply-To: alan@xxxxxxxxxxxxxxxxxxx
TWIMC:
After coding in assembly language with the P21 for some time I'm
beginning to wish the minimal instruction set included 1- and a 1+
instructions. If I had to select one or the other I'd have to say 1- so
that normal downcounting is easily supported. This business of
manufacturing -1s using:
dup dup -or com
is cute but it eats up lots of mips and I have to either reexecute this
sequence to recreate the -1 after using it up or keep an easily dupable
-1 close by.
Alan DeMars