david@ms.uky.edu (David Herron -- One of the vertebrae) (06/08/88)
I'd asked just that question a couple of months ago and didn't
receive much in the way of response.
One thing that'll be different is the way you do floating point.
Apparently on 68010's you have to do some fairly complicated things
to access the '881 and usually that stuff is in the run-time
library. On the '020 it's easier and doesn't get put off into
subroutines. The point being that your compiler'll have to be
a bit different. (On the other hand -- doesn't gnu CC handle
the '881 already?).
Something else which occurs is that there might be some hardware
assumption because the Amiga doesn't have an MMU and has certain
other things while the Unix PC has an MMU and doesn't have certain
other things. &etc.
It would be loverly to have an 020 in there tho'.
--
<---- David Herron -- The E-Mail guy <david@ms.uky.edu>
<---- s.k.a.: David le casse\*' {rutgers,uunet}!ukma!david, david@UKMA.BITNET
<---- But if you saw me on the road, would you know who I am?
<---- That's why I wear a hat.thad@cup.portal.com (06/09/88)
CSA (Computer System Associates) in San Diego manufactures a line of
68020/68881 "daughterboards" that operate in Amigas and other 68000-based
systems. I've been using their products in my Amigas since early 1986 and
overall I'm quite pleased.
HOWEVER, unless you want to operate the 3B1 with the "hood open", you may
wish to seek another alternative. All the CSA cards I've seen elevate the
daughterboard at least 1" above the original 68000's socket, and there
simply isn't enough vertical clearance in a 3B1/7300/
If you wish to contact them:
Computer System Associates
7564 Trade Street
San Diego, CA 92121 619/566-3911