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From: R_Tim_Coslet@cup.portal.com
Newsgroups: comp.sys.atari.st.tech
Subject: Re: Line A Considered Harmful
Message-ID: <37164@cup.portal.com>
Date: 22 Dec 90 16:54:47 GMT
References: <1990Dec19.034923.291@convex.com> <13510006@hplsla.HP.COM>
Organization: The Portal System (TM)
Lines: 28

In Article: <13510006@hplsla.HP.COM>
	andyc@hplsla.HP.COM (Andy Cassino) Writes...
>re: LINEA considered harmful
>
>I've been unable to find all the relevant postings on this topic, maybe they
>didn't all make it here. The gist of it seems to be that the TT doesn't
>support the linea functions so any programs that use them directly will
>automatically not work on the TT. I hope that's an accurate summary.
>
>Neodesk 3.0 bypasses the horrendously slow VDI
>functions and makes use of the quick linea functions instead. But wait 
>a sec, Neodesk 3 runs on a TT! Something here does not add up. 
I wonder if maybe people have gotten LINEA and LINEF confused?
LINEF (undocumented) functions are not supported on the TT, because these
opcodes are used in the 68020/30 for coprocessors. But Motorola has not
assigned anything to the LINEA operations, so I see no reason Atari would
have dropped their support in the TT.

I don't know one way or the other on the TT and LINEA, but I wonder if
others might have confused the LINEF changes on the TT and concluded
that LINEA was dropped too.

Could someone at Atari clarify this?

                                        R. Tim Coslet

Usenet: R_Tim_Coslet@cup.portal.com
BIX:    r.tim_coslet