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Article View: comp.sys.amiga.tech
Article #307

Re: Lucas Board Gets Even Cheaper

#307
From: Charles Hymes
Date: Sun, 02 Jul 1989 19:49
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In article <616@becker.UUCP> douglee@becker.UUCP (Doug Lee) writes:
>Here's a little something I discovered recently, while debugging a Lucas
>68020/881 board. You can now run it WITHOUT the 68881 installed. Just connect 
>a jumper between DSACK1 and CS lines on the 68881. DSACK1 is pin K4 and CS is 
>pin J3 on the 881. You can also jumper pins 7 and 15 of PAL U7 as an 
>alternative. THis works 100% O.K. with the system and setcpu finding the 68020
>and not the 68881. Of course you can'd run code with inline 'F' instructions,
>but you CAN have the 68020 without buying the 881. I will be building a Francis board soon, so will find out if this works O.K. with it too. I don't see why noth though.               <<<Doug>>>
>
>douglee@becker

Have all the problems with geting LUCAS to work with Microbotics Starboard
been fixed? I would like to build/buy one, but I have a Starboard with
2 Meg and a SCSI module installed. If they have been, who should be contacted
for the latest plans & parts ?
Also, is this a resonable progect for a novice? I have never built anything
with lsi chips on it, though I am fairly good with a soldering iron. Assuming
I have nothing else but a soldering iron, and only a rudimentry knowledge of
electronics, what would I have to read+learn+buy to put a LUCAS board together
and get it to run with my Amiga+Starboard ?

Thanks in advance,

Charles Hymes
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Message-ID: <19033@paris.ics.uci.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!decwrl!elroy.jpl.nasa.gov!ucla-cs!uci-ics!chymes
References: <616@becker.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!decwrl!elroy.jpl.nasa.gov!ucla-cs!uci-ics!chymes
From: chymes@ics.uci.edu (Charles Hymes)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Lucas Board Gets Even Cheaper
Summary: What is the Current state of the LUCAS board?
Keywords: lucas
Message-ID: <19033@paris.ics.uci.edu>
Date: 2 Jul 89 19:49:57 GMT
References: <616@becker.UUCP>
Sender: news@paris.ics.uci.edu
Reply-To: Charles Hymes <chymes@harlie.ics.uci.edu>
Followup-To: Lucas Board Gets Even Cheaper
Organization: University of California, Irvine - Dept of ICS
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