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Article View: comp.sys.atari.st
Article #25481

Re: a 68010 for your st?

#25481
From: Landon Dyer
Date: Sun, 08 Mar 1987 17:08
32 lines
2021 bytes
> i'm on spring break, and since i have nothing better to do i was thinking
> of hooking up a 68010 to my st. yes, it's a disgusting hack from the hardware
> side... i was wondering: has anyone else done this? what software problems
> do you have other than MOVE SR,<ea> (fixable by grabbing the priv violation
> vector)?
> 
> i know that the different stack frames will probably clobber my favorite
> debugger, but after looking into the st bios i don't think that it ever
> looks at the stack frame except for the bomb handler, which doesn't care what
> kind of stack frame it is.

It's not really a disgusting hardware hack, since the 68000 and
68010 are pin compatible.  But TOS will not work with a 68010;
it dies on the first "constructed" RTE.

HOWEVER, at least for boot ROMs, the system will get far enough
into system initialization to load an executable boot sector from
floppy.  I can't say this for sure about TOS in ROM, and since
I've never tried it, well, it probably doesn't work....

Adding a 68010 will not noticably increase your machine's
performance, unless you are prepared to re-write the graphics
primitives to take advantage of the DBRA loop-mode.

And naturally [I more or less have to say this] Atari doesn't
condone making this kind of modification to your machine....

-- 
-Landon Dyer, Atari Corp.	    {sun,lll-lcc,imagen}!atari!dyer

The views expressed here do not not		
necessarily reflect those of Atari Corp.	Segments are for worms.
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!mit-eddie!genrad!decvax!decwrl!sun!imagen!atari!dyer
References: <8703062012.AA22292@ucbvax.Berkeley.EDU>

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!mit-eddie!genrad!decvax!decwrl!sun!imagen!atari!dyer
From: dyer@atari.UUCP (Landon Dyer)
Newsgroups: comp.sys.atari.st
Subject: Re: a 68010 for your st?
Message-ID: <614@atari.UUCP>
Date: Sun, 8-Mar-87 12:08:59 EST
Article-I.D.: atari.614
Posted: Sun Mar  8 12:08:59 1987
Date-Received: Mon, 9-Mar-87 19:09:27 EST
References: <8703062012.AA22292@ucbvax.Berkeley.EDU>
Organization: Atari Corp., Sunnyvale CA
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