Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!agate!web-2a.berkeley.edu!c60a-1fy
From: c60a-1fy@web-2a.berkeley.edu (Anon)
Newsgroups: comp.sys.amiga.tech
Subject: Lucas Board
Keywords: LUCAS CLtd
Message-ID: <19943@agate.BERKELEY.EDU>
Date: 4 Feb 89 09:53:15 GMT
References: <650@csd4.milw.wisc.edu> <166@ziggy.UUCP>
Sender: usenet@agate.BERKELEY.EDU
Distribution: comp.sys.amiga.tech
Lines: 17

It seems I was a bit premature when I posted to comp.sys.amiga that I had
the lucas board working correctly with my starboard.  Now, however, I have
been going for 3 hours without a crash, so here's my fix.

Build the terminator, but use 3.3 k pull-downs instead of 1k's for /as, /lds,
and /uds.  These signals looked a little low on the scope.

Build a little piggy back board to split u9 into two chips, one for each
gate.  This is easy to do using 3 sockets.  One is connected to pins 1-6
and the other to 8-13, and both are connected to 7 and 14.

For me I got the thing to work using an S part for U8, and ALS part for
the first gate in U9, and a 7474 for the second half.

This works like a charm.  I hope this helps.

-Vince Lee