From:	"Andrew D. Jones" <guln AT home DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: HEEEEEEEEEEELP
Message-ID:	<a03s4t8p0nebu3q0tch90l75fvb1kb4qqu@4ax.com>
References:	<F241MwqYahYkihF8NQD0000489b AT hotmail DOT com>
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Date:	Sat, 30 Dec 2000 16:25:36 GMT
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

>I have some problems with djgpp... I'm making a DOS Game Boy emulator and i 
>need a tip: how to use the "register" keyword with djgpp... When I put:
>register char a;
>the compiler tells me:
>"register name not specified"
>Could you help me please?

Strange.  I don't know the answer to that one, but you should know
that as far as optimizations go, DJGPP is pretty good.  The register
keyword is a hold-over from older compilers that isn't (usually)
necessary in standard development any more.  The compiler is (again,
usually) smart enough to know what values should be kept in registers
for speedier access.  Using the register keyword will sometimes
interfere with the optimizer, at other times it may just be ignored.

-- 
Andrew D. Jones

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