Re: A whole lotta WRITE_REGISTER_ULONG

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From: Alexander Grigoriev (alegr_at_earthlink.net)
Date: 03/13/04 

Date: Sat, 13 Mar 2004 07:31:48 -0800

WRITE_REGISTER_ULONG _may_ be a macro in some configurations. And NOT in
other.

And without 'volatile' qualifier, the compiler might optimize the whole
write loop down to the last write, which would not work for OP.

"Tim Roberts" <timr@probo.com> wrote in message
news:jm6550lhddfpeedpegg872ub9jemop5j1e@4ax.com...
> thojens@gmx.de (Thorsten Jens) wrote:
> >
>
> Where did you read that? It is bogus advice. WRITE_REGISTER_ULONG is a
> macro that expands to exactly the code you have there.
>
> OK, it's not EXACTLY the same. The macro casts the address to a (volatile
> PULONG), but the "volatile" doesn't change anything in this circumstance.
> Your code will compile to EXACTLY the same assembler code as if you had
> used the macro.
> --
> - Tim Roberts, timr@probo.com
> Providenza & Boekelheide, Inc

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