Path: utzoo!utgpu!news-server.csri.toronto.edu!qucdn!leek
Organization: Queen's University at Kingston
Date: Thursday, 13 Jun 1991 12:14:31 EDT
From: <LEEK@QUCDN.QueensU.CA>
Message-ID: <91164.121431LEEK@QUCDN.QueensU.CA>
Newsgroups: comp.sys.amiga.hardware
Subject: Anyone running Lucas/Frances > 20MHz

I have a Lucas/Frances board in my A1000 running at 18MHz 1 wait without
problems for last 2 years.  20 MHz seems to be the upper limit for my
board.  I got my $$ worth.  I am wondering whether or not there are people out
there in the net that have their Lucas/Frances running above 20Mhz.
I am considering the idea of hacking a MC68030 chip (not the XC preproduction
parts) to my Lucas.  Since the 030 parts are still relatively expensive, I need
convince myself that my Lucas/Frances setup can handle speeds of 25MHz or
better.

If you have a Lucas/Frances running faster than 20MHz, please let me know
- the necessary hack/enhancements/precautions required
- the part (74, 74HC, 74LS, 74F, 74AS etc) you used for U8, U9, U11
  (I can get Lucas alone to run at 24MHz by using 74LS chips for U8,9,11.)
- CPU, DRAM controller etc part clock speed

Your comments, suggestions are welcomed (either in .hardware or email)

K. C. Lee
"Operators are standing by ...."   :)