page@swan.ulowell.edu (Bob Page) (10/29/88)
I posted lucas (the 68020 board for the A1000) in five parts to comp.sources.amiga. Since I did some heavy hacking on the 'distribution' I thought I'd keep the original in case anybody wanted the whole arc file (seems unlikely, but maybe) so it's available for anonymous ftp on swan.ulowell.edu in /amiga/hardware/lucas.arc -- it's a binary file, about 350K. You might be surprised, the original disk looks a lot different than the Usenet distribution, although all the information is the same. Sorry, I can't make it available via e-mail. ..Bob -- Bob Page, U of Lowell CS Dept. page@swan.ulowell.edu ulowell!page Have five nice days.
451061%UOTTAWA.BITNET@cornellc.cit.cornell.edu (Valentin Pepelea) (12/12/88)
I recieved my 68020 Devellopers Kit Monday and plugged the chips
in the Lucas board yesterday. Well, I am one of those 1% whose board did not
work the first time it was plugged in. This is what happens: I turn on the
computer, the power light comes on, and thats it. The power light does not
start flashing.
All my chips are socketed in correctly (the 68020 was very
difficult to plug in, but I made it). Most sockets are gold plated machine
screws. The OSC and U9 sockets are both gold plated machine screws. I made
sure that I dont burn any chips with static electricity. I never saw a spark
nor blue smoke coming out of a chip.
I used a probe to check all signals. Pins on all chips had the value
they were supposed to have. Those that were supposed to oscillate between 0 and
1 did so. There was no signal at all on the FC2 pin of the 68000 connector, so
I shorted jumper 2, but that did not help. I re-checked to make sure the
Lucas board makes good contact with the motherboard through the 68000 slot. It
does.
Then I checked the values on the 68000 connector right after a
reset. The *HALT line gets asserted for half a second, then goes back up to 1.
The *RESET signal oscillates for about 5 seconds. The data lines oscillate
for about 5 seconds, and then do not have any value any more. The address
lines oscillate and then stabilize to a constant value. The *VMA (or was that
*VPA?) signal oscillates in concert with *RESET. This all seems normal to me.
All capacitors are plugged in correctly, with the plus side in the
sqare hole. If I pull out the Lucas board in plug the 68000 back in, the
power led starts flashing the way it is supposed to. What do you think I have
done wrong, and how do you think I could to find out the problem and correct
it?
Valentin
-------------------------------------------------------------------------
"An operating system without Name: Valentin Pepelea
virtual memory is an operating Phone: (613) 233-1821
system without virtue." Bitnet: 451061@uottawa
- ancient Inca proverbsjk@ut-emx.UUCP (bob) (04/13/89)
Lucas-ites, Well, you know starving, slaving, grad-student and all, but I am finally getting around to buying the chips for my LUCAS board that I got a few months ago. In the interim, however, I got a Toolbox with a Flash Card DMA SCSI controller. I also have a C-LTD Amega board (1 Meg expansion RAM). I vaguely remember reading something about LUCAS and DMA devices. So, as I hope to attending a fair this weekend where I may be able to get a good price on a 68020 and '881, I'm wondering if LUCAS will still work with my expanded system. Any help/advice/words of wisdom would be greatly appreciated. Thanks Scot sjk@astro.as.utexas.edu -What did Mickey Mouse get for his 60th birthday? -A Dan Quayle watch.
tron1@tronsbox.UUCP (HIM) (07/30/89)
Ok, here is a call for information -- you can email me and I'll
summarize, or post to the net (I would prefer mail)...
Reading the August 1989 Volume 2 Issue 5 of Amiga Transactor, I saw an
article on the "FRANCES" (F ast R am A t N ominal C ost, for
E xtended S torage) memory board kit they have
available (75$ for a PCB and PAL's).
It is a 32bit ram card for "LUCAS" (L ittle U gly C hip A ccelerator
S ystem) , a 68020/68881 processor
upgrade for the Amiga 1000 (also 75$ for the PCB). What I would like to
know from the net is, :
1) Is there anyone on the net who has built a LUCAS
2) What they think of it.
3) What it cost to complete.
4) Do you intend to build a FRANCES??
5) Does the 68881 react to "standard" 68881 calls???? (I.E. will Turbo for
the 68881 recognize it???)
Thanks for the info ...
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****************************************************************************mikey@NRC.COM (Mikey Goodglick) (08/29/89)
I wish to have some information regarding the LUCAS project. I would like
any news of anyone who has had problems with it..be it construction problems, locating parts...operation problems..etc. If anyone is selling one, please
contact me, I may be interested in purchasing one.
--
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------------------------------------thorson@typhoon.atmos.colostate.edu (Bill Thorson) (09/20/89)
I know there is ftp'able information about the Lucas board somewhere. I've seen it. If anyone has any information about homebrew accelerator boards I would appreciate any help. I just found a cheap source for 68020/68881 pairs and am considering turbocharging my old 1000. Some opinions about the Lucas stuff would be great. Thanks! Bill Thorson