Patrick Finnegan <pat(a)computer-refuge.org> wrote:
> > The Republic to which I pledge allegiance (Republic of Terra) has no
> > bourgeois patent laws and all intellectual assets belong to All
> > People.
>
> You sure that isn't the USSR?
Well, I was born and raised in the USSR, and I was very supportive and proud of
its achievements (still have my USSR passport, it has no legal value since there
is no more USSR officially, but it has great soul value), and the laws I'm
drawing up for the Republic of Terra are greatly inspired by the USSR, but the
USSR and the Republic of Terra are not identical.
MS
At 23:49 20/04/2004 +0100, you wrote:
>> Anyway, the machine itself works fine, however the Atari SC1224 monitor that
>> came with it does not. I can hear it "chirp" when I throw the switch, suggesting
>
>What sort of power supply does it use? If it's a switcher, then the chirp
>might be coming from the chopper transformer, indicating, perhaps, a
>short on the output of the PSU. That, in turn, might be the line output
>transistor (HOT to you, I guess).
Hi Tony,
It would appear that you are correct. Once I removed the cover, I could clearly
tell that the "chirp" is coming from the switching power supply. There appears
to be no activity from the rest of the monitor, including the fact that even
with the lights off, I could not observe filaments lighting. The power LED does
light, however it's fairly dim - I don't know how brightly it would normally
light.
The final filter capacitor in the supply is rated at 180v DC. I powered the
supply briefly under no-load and the output rose to 140v. With all the
connections in place, it is producing about 55v - I have no idea what the
normal requirements of the monitor are.
This is where a set of schematics would really help (anyone ???)
Regards,
--
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
>> Would somebody please take my Mac II?
>>
>> I saved it from being scrapped at the office because of it's
>> history, in that it was Apple's big redesign, the first
>> machine of the new line
>> -- one that completed with IBM's PS/2 line and argubly was a
>> greater success. I'm not a big Apple expert but it just
>> seemed if you were going to have a few Macs that this model
>> would be in the top 5.
>
> It would be for me, but I've already got one. Is there much interest for
> original Macs here? I'm beginning to wonder after nobody replied to me
> question about a dead Mac IIfx last week :-/
>
There are a few of us on this list with interest in original Macs; my
interest is limited only by available storage space. (Want a few Iisi's,
perhaps? A few 20MB Rodime hard drives with external actuators?) What
happened with your Iifx?
If you're really going to scrap the II I could perhaps be persuaded to give
it a home; haven't had my hands on one since I ran one as a file server in
1991-2; somewhere I still have AppleShare and the AppleTalk Internet Router
software I used back then. That was a really hot network (not) - 6 SE's, an
SE30, an original LC, a Iisi, a II as a server, another II as a workstation,
a Shiva Telebridge and an Avatar MacMainFrame SDLC gateway to a remote CICS
host and a LaserWriter IINT. All on PhoneNet, too. Another SE was used to
dial into the Telebridge at 2400BPS thru a Practical Peripherals modem. 90MB
SCSI Bernoulli on the SE30 for backup. We even had a PC in on this party
using a PC AppleTalk card. Ran FileMaker II for a workgroup plus Word 5,
Excel, PageMaker 3, Canvas 2.1 and the Avatar software for mainframe session
access. The Avatar printer emulator ran on a dedicated SE driving an OKI
dot-matrix printer through a serial-to-parallel adapter as I recall. Worked
fine, too. The leased-line modem for the remote mainframe access was easily
as big as a Mac II; as I recall the II sat on top of it. Quite the setup.
Drove our MIS guy nuts that this arrangement of odds and ends set up by an
amateur - all units were out of production by then except maybe the Iisi -
was stable but his Novell setup crashed every few days.
I figure your Mac II and my ImageWriter LQ would make a handsome 'couple'
while completely covering a good sized desk's top. Nothing like old Apple
hardware - I'm still printing on the LaserWriter II I bought new in 1989.
Works fine. Slowly, but fine.
Seth Lewin
More goodies from today's UofA auction:
for a grand sum of $5.00:
A Cypher F880 9-track tape drive (operational, but has a missing front dust
cover), a couple of old but working HP 750 printers w/ FULL ink cartridges,
and a couple of IBM CD's : Risc System/6000 Software #5756-030 AIX/6000 3.2.5
w/NFS Encryption. Bootable (2 cd's)
Cheers
Tom
--
---
Please do not read this sig. If you have read this far, please unread back to
the beginning.
Lost control and wandered through ePay for a bit today. A
few things someone might be interested in, all DEC, all
the same seller as he caught my eye with a laptop and had
all these goodies listed. No affiliation. I know I've had
some email conversations, not sure if I bought anything,
but he seemed reasonable. YMMV.
VAX 8530, single cabinet with Console 380 sitting on top,
appears cabling is intact. CI interface. Guy wants $250,
wonder if he won't make a deal after nobody bids...
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1486&item=3091806283
"DEC Memory Array Tester". It's late enough that it's got
what look like Euro connectors, but I can't guess what
flavor of DEC memory interconnect it's for. Certainly
post-Unibus. Has a sheaf of papers in the lid, unclear
if they're docs.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25423&item=3810462266
RK07-EF disk pack, allegedly new in box.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3756&item=4125693956
Share and enjoy,
--Steve.
>From: ard(a)p850ug1.demon.co.uk
---snip---
>
>And IIRC the Intel 8251 USART chip has the feature that there's no way to
>get it into a known state under certain circumstances (IIRC this happens
>if you're initialising it in synchronous mode and don't know how many
>bytes you've written to it).
>
>-tony
>
Hi
I think there is a work around for the 8251 but it isn't
all that clean either. You just keep writing commands
until you are guaranteed to do a reset. I'd have to look
at the code I have someplace to do this.
Hopefully, they don't use 8255's to control missile launches.
Dwight
At 15:01 20/04/2004 -0700, you wrote:
>On Tue, 20 Apr 2004, Dave Dunfield wrote:
>> I also found a program called WRITEATA which tries to write Atari format disks on
>> a standard PC drive. It has trouble due to differences in drive speed and the fact
>
>"DIFFERENCE IN DRIVE SPEED" ??!?
>
>What speed do the drives of your Ataris run at?
A standard PC drive runs at rotational spindle speed of 300 RPM.
According to the FAQ's and some of the documents included with the various Atari<>PC
disk transfer packages that I have looked at in the past couple of days, the Atari 1050
drive runs at a nominal speed of 288 RPM.
The disk copying package that I managed to download and boot included a drive speed
test - my drive weighed in at 287 RPM, so it would appear that this information is
correct.
Regards,
--
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
Hi, I am interested in this.I am in Chico but will be down there this week and next week also. I have a lot of equipment myself and would be willing to trade if there is something in particular that you are looking for.
Sincerely,
Shannon Hoskins
pds3(a)ix.netcom.com
-----Original Message-----
From: Kirk Davis <kdavis(a)ndx.net>
Sent: Apr 19, 2004 8:32 PM
To: cctalk(a)classiccmp.org
Subject: Ton of *free* DEC stuff
I'm moving and will only have room for one small system
so I need to give away some things. I have a bunch of stuff
that I got from a company that used to make Q-Bus cards.
Here some of the stuff I is going:
Boards Q-Bus and some U-Bus
Manuals VAX, PDP. Some print sets
Cables (Cabkits, Serial, drive, network, etc)
Media (Mag & Mini tape, disks)
Software (lots of dec stuff including several Distros)
TK & SCSI Drives
Various cabinet parts, rails, hardware, etc
Hard drives (5.25 ESDI & ST506)
Some Apple & Atari stuff
Nothing larger than a BA23, most of the stuff is in
boxes. Looking at about 15-20 boxes.
*** This is local pickup only ***
Preference give to someone that will take it all at once :-)
Kirk
Hi Everybody,
Picked up another 520ST (same flea market as 1050 drive) - it's a later edition
as it has the power supply and floppy drive built in like my 1040ST. My other
520ST requires an external floppy and drive.
Anyway, the machine itself works fine, however the Atari SC1224 monitor that
came with it does not. I can hear it "chirp" when I throw the switch, suggesting
that the horizontal oscilator is running, however I never get any light on
the screen - no apparent "static bristle", so there may be no HV, but I can't
tell for sure haven't opened it yet.
Anyone got a set of schematics for the SC1224?
Btw, does anyone know if the internal floppy drive of a 520ST is a single-sided
drive like the external SF354 drive? Or a double sided drive like is in the
1040ST?
Thanks,
Dave
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
Hi Everybody, (Hi doctor Nick)
I discovered that I had a couple of power supplies all along. I remembered this
afternoon that I have a couple of Atari 1010 Cassette drives tucked away, so I
dug em out and sure enough: Atari 9v 31va supply - just what the doctor ordered.
I also found a program called WRITEATA which tries to write Atari format disks on
a standard PC drive. It has trouble due to differences in drive speed and the fact
that it can't do 128 byte sectors, however I was able to get it to write 130k
"enhanced format" 1050 disks.
Most Atari DOS images I've found are 90k which it can't do, however I found one
called "TurboDos" in a 130k image, and was able to write it and it booted!
It booted and then crashed on the 600XL I was originally testing with, however I
noticed a message indicating "XE RAMDISK LOADED" ... so I tried a 130XE and everything
worked - it comes up in some sort of menu program written in basic, which I could
exit (to BASIC), then use "DOS" to get to DOS - so my drive does work!
I also found a 130k disk copying disk that works, it appears to have a German version
of Atari DOS 2.5 underneath it.
Thanks to everyone who helped me figure this out.
Regards,
--
dave04a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Vintage computing equipment collector.
