Article View: comp.sys.atari.st
Article #25481Re: a 68010 for your st?
From: Landon Dyer
Date: Sun, 08 Mar 1987 17:08
Date: Sun, 08 Mar 1987 17:08
32 lines
2021 bytes
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.
Technical Details
Message-ID:
<614@atari.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!mit-eddie!genrad!decvax!decwrl!sun!imagen!atari!dyerReferences:
<8703062012.AA22292@ucbvax.Berkeley.EDU>Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP 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 Lines: 32