>Does anyone know for sure that if the 4 batteries on the Lisa motherboard
>are dead, if that will prevent it from powering up? This machine was
>working
>about 3 years back when it went into storage. Thanks for any tips.
No, it won't... but one thing you have to watch; there are two microswitches
to detect if the covers are on or not - one front, one rear. If they aren't
closed, either by the covers or 'bodging', the thing won't power up.
I've picked up a couple of cheap 'dead' Lisae where that was the only
problem!
Mike
http://www.corestore.org
I've been tidying up (ahem) the workshop and came across a board I'll
surely never use. It's some sort of Hewlett Packard serial card, about
8.5" long and 4.8" wide, with a 50-way edge conector at one end and a
brown-painted panel, labelled "RS-232-C", over a DB25S, on the other.
Part number 02670-60068.
I've no idea what it's off, and no way to test it; yours for the price
of postage if you can use it.
--
Pete Peter Turnbull
Network Manager
University of York
>Does anyone know if there is software available to transfer Apple II
>disk images on a raw-binary basis (ie: not necessarily well formed
>sectors), and if so, are there any simulators which can make use of
>such images?
>
>I know this would be fairly complex, as the Apple could do half
>tracks etc., and timing can be critical to many Apple copy protection
>schemes. These factors would also have to be delt with somehow - is
>there anything available which can do this?
I don't know about getting past the copy protection, but there is at
least one fairly vast archive of Apple II software available online. I
never remember the exact address, but it is something with asimov.net
(the A2 newsgroups usually make mention of it from time to time)
Your friend can always check there to see if the software he needs to
transfer has already been made into a disk image that he may be able to
use with the emulator.
-chris
<http://www.mythtech.net>
:-)
Seriously, I have no use for the board and it looks to be in
excellent shape. There's no point in letting it languish in a box for
several more years.
Specs again:
ISA bus memory board
Cheetah Int'l. Inc.
"Cheetah Cub 2Mbyte Fast Memory"
4 banks of 18 256Kx1 socketed chips
There is a set of DIP switches per bank, but there is no labeling and
I have no docs. I've also never tested it and have no way to do so.
For sale - Steve Thatcher says the memory chips are worth $0.75/each,
and the baseboard probably sold for hundreds of dollars, so I figure
$200USD.
When you finish laughing, make me an offer. ;)
For trade - GVP SIMM32 1MB or 4MB modules or 1Mx1 DRAM chips, or
other ger for an Amiga 2000. If you have trade beads that are worth
more than the Cheetah board, let me know. I'm not allergic to letting
go some cash.
Doc
They were there.......they weren't there.......they were there.
After removing a rather large dumpster's volume of *stuff* (literally - should give you an idea of why we couldn't find them in the first place) from my father's storage shed we uncovered some of the little pale blue friends hiding in a back corner after all. There were not as many as we had originally thought (only 4) but they were there.
1 is already sold, 1 has a screen issue and I still need to test out the other 2. Anyway if you are local to Methuen MA and are interested let me know. I would prefer not to have to deal with shipping hassles unless I can't move them locally.
I am thinking $10 for the unit with the screen prob and assuming the other 2 test out ok, $25 each for those.
I also have a bunch of Visual Technology model 55 and 310 terminals if those are of any interest to anyone.
Thanks for humoring me throughout this ordeal.
Hi Doc, you are welcome. Always take your shoes off though, so you won't ruin a good pair of shoes...
best regards, Steve
> Thanks, Steve, Tony, Bill, Brian, Gene, and everybody for the
>tutorial. It helped a lot. Now, instead of being afraid to pick up the
>gun, I can go shoot off some toes..
>
>
> Doc
Mike K. and I are working on resurrecting a Cromemco System 3
This is a large S-100 rack-mount unit with dual 8" floppy drives
and internal hard drive.
Got it powered up yesterday, and all DC supplies appear normal.
Managed to get it working to the point where it tries to boot from
the A drive (floppy) - unfortunately we have no boot diskette.
We able to get into the 'RDOS' ROM monitor for which we have no
documentsion. Discovered the 'BA-BD' commands which try and boot:
BA accesses the first 8" floppy, BB accesses the second 8" floppy.
BC&BD just "hang". Also discovered an 'I' command (IPL?) which
also hangs...
We were not able to get any action from the hard drive - I don't
know if it would be booted by 'BC', 'BD' or 'I' (or something else).
I did note that the HD power was disconnected when we opened the
box, so I do not know if the hard drive even works.
Q1) Does anyone out there have a boot diskette for a Cromemco
System 3? I'm pretty sure that if we had a boot diskette we
could bring the system up.
Q2) Can anyone tell be exactly what needs to be done to boot the
hard drive? Are there any diagnostic procedures that we can
use to confirm that the HD is operating?
Any information or pointers to information on this system would be
very much appreciated.
Regards,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
http://www.parse.com/~ddunfield/museum/index.html
hmmm, I thought there were four rows of 18 chips. That sounds like 8 banks of 256K which seems
like 2meg to me... unless I got something wrong
as for board worth, the 256K chips are worth a bit. I found a site that had them for sale at $0.75 each.
If you need a PC to run it in, buy one on eBay... LOL (couldn't help that one)
best regards, Steve
-----Original Message-----
From: Doc Shipley <doc(a)mdrconsult.com>
Sent: Jun 9, 2004 1:28 PM
To: General(a)mdrconsult.com, Discussion@mdrconsult.com@null,
On-Topic and Off-Topic Posts <cctalk(a)classiccmp.org>, null@null
Subject: Re: Cheetah Cub board
Steve Thatcher wrote:
> that is a Micron part number for a 100ns 256K ram. It is probably an EXPANDED memory card unless it has two bus connectors then it might be EXTENDED memory (didn't we just have a conversation about PC memory...)
Ehh? 256K? So either the board provides 16MB of RAM, and the 2Mbyte
silkscreen is just the shipped configuration, or somebody was wasting
87% of their money?
BTW, the 10ns was a brain fart. I dunno much about DRAM, but I can
read the -6, -7, and -etc extensions... :)
So, more relevant to me, is the board itself worth anything outside
the DRAMs? I have a friend doing a 68000 SBC project who could use
some, and I think some of the rest would look fabulous on my Amiga
2000's A2091 board.
One note - It looks like the DIP switches can be set per bank, but
without docs, I'm guessing that taking any of the RAM off will render it
inoperable.
> It is more than likely one of the two memory standards and will work in any OLD PC.
But I don't have any old PCs. :)
BTW, your line wraps seem to be set to 256 or something.
Doc
Hello list,
I've recently acquired a PDP-11/04 which in its past life was the controller of a CNC precision drill/router (not the network kind) system. Inside which have 2 boards (Unibus of course) described as below:
First clue: Upper left hand corner says it's from "Advanced Controls Corp.". A quick search points to http://www.acsmotion.com as they seem to be in the same field, industrial/machine controls. Alas, their tech support doesn't even have a clue as to what a Unibus is...
Both boards appear to be the same model/type, but one is a earlier revision with a lot of reworks; i.e. jumpers and 2 smaller daughterboards, of which the later revision board doesn't have.
Each board have 2 BERG-like male connectors (50-pin and 40-pin) which (guessing here) connects to the actual drill/router itself.
The board is made out of SSI/MSI/LSI TTL ICs. The most complex/prominent are the two 12bit Analog Devices DACs from the DAC80 variety, both made in the late 80s:
DAC #1
- ADDAC80N (24-pin)
- CBI-V
- 8802
DAC #2
- ADDAC80D (24-pin)
- CBI-V
- 8811
I guess these are for the X-Y positioning, but of course I may be WAY out here..
Board #1
- S/N 11926 (sticker)
- P/N 18992-103R (scribbled on handle)
On the upper left hand corner:
- Advanced Controls Corp.
- PCB Detail No. 17795 Rev. H
- ASSY No. 18992 Rev.
- Replaces 17750
Board #2
- S/N 0000005077 (sticker)
- P/N 18992-102R (scribbled on handle)
On the upper left hand corner:
- Advanced Controls Corp.
- PCB Detail No. 17795 Rev. D
- ASSY No. 17750 Rev.
If anybody can positive ID these boards, it'd be great!
If anybody has the programming docs for these, it'll be even greater! :-)
/wai-sun
p.s. These boards seems to have last tested OK on Oct 28, 2002 (from a "tested" sticker)!
--
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