Re: [colorforth] Strage ColorForth results
- Subject: Re: [colorforth] Strage ColorForth results
- From: "Samuel A. Falvo II" <kc5tja@xxxxxxxx>
- Date: Tue, 24 Feb 2004 07:31:31 -0800
On Tuesday 24 February 2004 03:31 am, Roman Pavlyuk \(personal\) wrote:
> Since in CF IF and -IF are implemented as jz and jnc opcodes
> that check values of Z and C flags respectively.
>
> Try inserting '?' after the literal -- it compiles into test eax, eax,
> which should set Z flag (C flag is zeroed, but plz check with Inter's
> manual)
? takes an argument. You'll want to say this instead:
> : 0? ? drop if 0 ; then 1 ;
: 0? -1 ? drop if 0 ; then 1 ;
? compiles a TEST EAX,nnn instruction.
--
Samuel A. Falvo II
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