--- John Lawson <jpl15(a)netcom.com> wrote:
> John KB6SCO
>
>
> PS: How many Listmembers are also Hams? I know of at least ten or
> so of us... dah-dit dah-dit dah dah dit-dah..... QRZ?
Ethan Dicks - N8TVD
-ethan
=====
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Got the following yesterday, and since I'm not in need of any he OK'd me
sending this to the list. Please contact the original author, not me, if
interested.
Zane
From: "J. Darren Peterson" <jdarren(a)ala.net>
>I've got three PDP boards new (unopened) in box. The vendor label says
>M9312 , but on each box that part number has been scratched through and
>the number M9301 written over it. Either way, you can have them for the
>cost of shipping if you want. Let me know.
>
>J. Darren
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
>I recently acquired a DEC M7551 (4Mb memory) board for my 11/23+. I
>installed the board, but the system traps while doing the power-on memory
>test. Unfortunately, I don't have any documentation for the board and I'm
>not sure if I have the jumpers/switches set correctly. It could be that the
>board is just dead, but I'd like make sure before I give up. If someone
>could forward me the settings, it would be greatly appreciated.
Are you sure it's a 4 Mbyte (M7551-CA) board? If it's a 2 Mbyte (-BA)
or a 1 Mbyte (-AA) board then it's very possible that it's jumpered
for some other starting location than zero. And your CPU self-test
is expecting memory starting at zero.
If you can get to ODT ("@" prompt), try doing some examines of various
locations, i.e. "0/", etc., and see if you get anything.
If the board isn't responding at "0/", try higher addresses and see if
it's living there.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
>Nah, gotta use the current buzzwords: eHamfest.
The web page that becomes the front door to this eHamfest can dynamically
scramble the anchors to each of the ventor pages kinda creating a random
walk through the sales floor from our browsers... oops, nevermind
;)
Mike: dogas(a)leading.net
In a message dated 2/15/00 00:26:40 Central Standard Time, donm(a)cts.com
writes:
> >
> > < I visited a surplus dealer today and picked up an external hard drive
> > <case that he was throwing out. The case has a Seagate 225 drive in it
with
> > <some kind of Western Digital interface card. The card has MFM
connection
> o
> > <one end and a 50 pin header on the other. The header is connected to a
> > <cable that had a SCSI type plug on it. Does anyone know if the card is a
> > <SCSI to MFM interface or what?
> >
> > Well St225 is MFM so the card is either a host to MFM bridge or
SCSI(SASI)
> > to MFM bridge.
> >
> > The real answer is a part number on the card like WD1002-HDO (host
> interface
> > number). Someone else may be able to confrm if the SHD is SASI or at
that
>
> > time early SCSI.
>
> TheRef45A says that it is SASI to ST-412.
>
> - don
>
Most of the early Heath/Zenith Hard Drive set ups manufactured by after
market suppliers used the XEBEC controllers on the hard drives and interfaced
to an SCSI card in the computer. The 50 pin female header connected to a 50
pin male header on the SCSI card in my H-89's. There were other schemes, one
involving a Western Digital PC controller mounted on the ST-225 and an
interface decoder card on the left buss in the H-89. I would bet that the HD
described was interfaced to an SCSI card though.
Just my .02 worth. YMMV
Mike
I recently acquired a DEC M7551 (4Mb memory) board for my 11/23+. I
installed the board, but the system traps while doing the power-on memory
test. Unfortunately, I don't have any documentation for the board and I'm
not sure if I have the jumpers/switches set correctly. It could be that the
board is just dead, but I'd like make sure before I give up. If someone
could forward me the settings, it would be greatly appreciated.
Thanks,
Bill King
Hello, ladies and gents out there
I have found good stuff in the dollar bin at Computer Renaissance:
2 working monitors for my Amiga and a Tandberg 525meg tape backup
Price: $1.00 per
And I don't get dirty or smelly in the process.
And I also recommend going to hamfests -- amateur radio fleamarkets. Quite
a few guys get this stuff and try to peddle it for a couple bucks. My
favorite line is -- How badly do you want to take this boatanchor home??
At one hamfest I found 19 used DSDD 3.5" drives for $30. These are the
standard Amiga drive, but useless anywhere else.
Get snooping out there -- the used market is drying up fast due to the low
low cost of new stuff.
Gary Hildebrand
Amigaphile
WA7KKP
scrounger 1st Class
Not too sre as I don't memorize but there is acrapload of info and ideas up at
http://www.htmlhelp.com that you might be interested in. Opening another window
>from that one huh? Sounds like you're building a porno site (grin)
>Hello, all:
>
> I'm not too familiar with HTML, but I'm guessing that this question is
e
>asy to answer.
>
> What's the code to open a new browser window when someone clicks on a li
>nk? I want a new window to open with the requested page as the open document
>.
>
>Thanks.
>Rich
>
>[ Rich Cini/WUGNET
>[ ClubWin!/CW1
>[ MCP Windows 95/Windows Networking
>[ Collector of "classic" computers
>[ http://highgate.comm.sfu.ca/~rcini/classiccmp/
><================ reply separator =================>
>
>
>
>
This board is a SASI board made primarily to tap into the market grown
around the XEBEC and OMTI boards. ADAPTEC somewhat later came out with a
series (40xx) which later pretty much owned the market. They were all more
or less similar, but none were "real" SCSI, in that (A) they didn't cave a
firmly established common command set, and (b) they didn't use all of the
soon-to-become-standard SCSI signals, certainly not entirely in the same
way. By the time the standard was accepted, it was mostly the ADAPTEC
feature set that won out.
Nevertheless, Joe, you'll find that card can help you quite a little with
putting a hard disk in place on your old CP/M systems. This can be helped
along with a "back-end-driver" which installs itself under CP/M as an
autocommand. This sits above the BIOS, hence uses a 2-k lower system than
it would without it, but makes your SCSI hardware portable from one system
to another. That's pretty handy in itself.
Dick
-----Original Message-----
From: Don Maslin <donm(a)cts.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Monday, February 14, 2000 11:26 PM
Subject: Re: Western Digital WD 1002S-SHD card ???
>
>
>On Mon, 14 Feb 2000, Allison J Parent wrote:
>
>>
>> < I visited a surplus dealer today and picked up an external hard drive
>> <case that he was throwing out. The case has a Seagate 225 drive in it
with
>> <some kind of Western Digital interface card. The card has MFM connection
o
>> <one end and a 50 pin header on the other. The header is connected to a
>> <cable that had a SCSI type plug on it. Does anyone know if the card is a
>> <SCSI to MFM interface or what?
>>
>> Well St225 is MFM so the card is either a host to MFM bridge or
SCSI(SASI)
>> to MFM bridge.
>>
>> The real answer is a part number on the card like WD1002-HDO (host
interface
>> number). Someone else may be able to confrm if the SHD is SASI or at
that
>> time early SCSI.
>
>TheRef45A says that it is SASI to ST-412.
>
> - don
>
>> Allison
>>
>>
>
HI,
I found four DEC memory modules in a lab drawer the other day. No markings
that make sense to me but possibly to someone else:
On the PCB side 1: Side 1 50-20612-01 Rev A01 LPWR BE3-0
On side 1 in screen print: 27391 6868-3 (placed in the order: LPWR 27391
BE3-0 6868-3)
On the PCB side 2: Side 2
There are nine memory chips on each side, type HM514100AS8, plus a 74F541D.
4 Mbits per chip? 8 Mbyte plus parity per module?
Dimension 111.81 mm * 28.00 mm
Available for freight (from Sweden) plus what the receiver feel thay are
worth.
Thomas
