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From: dirks@kaa.eng.ohio-state.edu (William R.Dirks)
Newsgroups: comp.sys.amiga.tech
Subject: LUCAS woes
Summary: Help me
Message-ID: <3326@quanta.eng.ohio-state.edu>
Date: 25 Oct 89 20:44:39 GMT
Sender: news@quanta.eng.ohio-state.edu
Reply-To: dirks@kaa.eng.ohio-state.edu (William R.Dirks)
Organization: The Ohio State University Dept of Electrical Engineering
Lines: 35

I am having some difficulty getting my LUCAS project to work.  When I
power up or reset the power light flashes five times, then I get a 
dark grey screen.  And that's it.  No boot song, Kickstart hand, etc.
Everything I can find in the docs about a board that gets part way
through boot-up says try different logic families for U9, and/or 
different clock speeds.  I have tried the following parts for U9 at 
both 16 and 20 MHz:
	  7474
	'ALS74  (TI)
	 'AS74  (National)
	  'F74  (Fairchild)
	  'F74  (Motorola)
	 'LS74  (Signetics)
	  'S74  (TI)
In every case exactly the same thing happens, which leads me to believe
it's something else.  I have examined the board very closely for 
soldering mistakes and other defects many times.  I found nothing
suspicious.  The board mates with the motherboard socket firmly and 
comfortably.  Amy works perfectly with her 68000 reinstalled.  When
I tested the LUCAS board I had all peripherals disconnected except
for monitor, mouse and keyboard.  I have grounded the PALs on the
Kickstart daughterboard.  I have pins 1 of J1 and J2 connected together.
I have not performed any other hacks on LUCAS.  

I am hoping someone out there has some knowledge of similar problems
with LUCAS, or with what is happening at that phase of boot-up which
would help me track down this problem.  The only debugging tools I 
have are a multimeter and a BSEE degree.  

Any help/insight is greatly appreciated.

-=-
Bill Dirks

dirks@kaa.eng.ohio-state.edu