NEG in ASM

[Blitz]

Why can't you use extended regs?
Anyway, here's the only assembler you can take home to mum.
http://dotnet.zext.net/dl.php?filereq=masm

[Sterling Christensen]

WAIT!!! NEGating dx:ax without using 32 bit registers is simple. In fact, it's less instructions than moving it into a 32 bit register and back!

2s complement, remember?

Code:

; (signed 32 bit integer to NEGate assumed to already be in dx:ax)

; Binary not dx:ax
NOT DX
NOT AX

; Add 1 to dx:ax
ADD AX, 1
ADC DX, 0 ; add with carry

Even if you do get masm or tasm, this will be ever-so-slightly smaller and faster.

Ha! Who's the 1337 asm coder now! (j/k)

[Blitz]

mah, beat this
neg eax

[rCX]

Thanks, Sterling Christensen thats what I needed!!!