Path: utzoo!attcan!uunet!garfield!john13
From: john13@garfield.MUN.EDU (John Russell)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Exec's use of the user stack for a task
Summary: what's broken may not stay that way
Message-ID: <5042@garfield.MUN.EDU>
Date: 19 Dec 88 23:46:03 GMT
References: <8812180904.AA24272@postgres.Berkeley.EDU>
Reply-To: john13@garfield.UUCP (John Russell)
Organization: Memorial University of Newfoundland
Lines: 21

In article <8812180904.AA24272@postgres.Berkeley.EDU> dillon@POSTGRES.BERKELEY.EDU (Matt Dillon) writes:

>All in all EXEC has only 4 or 5 incorrectly implemented items (use of the 
>user stack, exceptions, lack of dynamic priorities, the hardware screwup that 
>placed the interrupt vectors, and EXEC library base in chip memory).

And C-A will be taking steps to rectify at least some of this in 1.4. The
May/June '88 AmigaMail talks about how the exception base location may
be changed on a 68010 or higher system and shows how to locate it. 

It mentions that serial I/O will be one of the prime beneficiaries... does
anyone know what kind of speedup might be expected? Would this speedup be
more noticeable at higher baud rates? (I may go 9600 baud in the new year.)

Most developers may have remembered about the exception vectors, but a little
reminder never hurts.

John
-- 
"Version 2.0 is advertised as supporting cursor keys."
	    -- somewhat left-handed endorsement of a Mac word-processor :-)