Hey all you big iron collectors!!
Tomorrow at the UA auction they got a Big S/390 with all the auxiliary
cabinets. I fortunatly had my digital camera with me this time,s as the
University FORGOT to post the computer on it's online site.
This means that a lot of would-be purchasers may not be there. I suspect that
the 390 and the associated cabinets will go cheap, but who knows. The
University may decide to postpone the auction for the 390 til next time. If
they don't..Here's your chance.
You can bid by phone. But you'll need to set up an account with them before
the auction. Auction starts at 8:30 MT (tucson Az.). I expect that they will
get to the s/390 at aroun 11:00 or 12:00 noon.
I have some photos I took this morning. They are not labeled. I've written
down more info and I'm looking it up as we speak. The 390 is circa 1999/2000
and is in #2 condition which is next to new. Several books/binders w
documentation. Hey don't these things run linux on a virtual partition??
Anyway, see for yourself. (the brown lines on the machines is tape. It's too
keep people from opening the cabs and removing componenets during inspection
day (today)
http://personal.riverusers.com/~dponsford/UAauction.html
Auction web page:
http://pacs.web.arizona.edu/surplus/public/auction-sale_home.html
Tom
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Please do not read this sig. If you have read this far, please unread back to
the beginning.
Thinking about the recent posts on "Emulating right down to the Iron"..and I
had an idea, that I first thought was completely crazy, but am now thinking
that it may be only slightly nuts....
People have successfully modeled some of the processors using current
technology such as FPGA's. What if someone used and FPGA or similar and
produced a processor capable of running the instruction set of a specific
machine, but was compatible at the PIN (and other HW considerations) of a
x86. A standard motherboard (obviously with a completely vustom BIOS) and
standard hardware could then be used.
Depending on what type of HAL was implemented their might be the need for
some custom drivers at the emulated OS level. But this would provide a
platform that used current hardware (easy, available, cheap) without any
additional layers....
As I said, I thought I was completly wacko when the idea first came up, but
I wanted to get the lists thoughts....
>From: "Pete Turnbull" <pete(a)dunnington.u-net.com>
>
>On Oct 1 2004, 11:06, Dwight K. Elvey wrote:
>> Hi
>> I'm looking for a spec sheet on a 8308. I think it
>> is part of the older National Semi series DM8308.
>> It might be a 8303 ( the schematic is not to clear ).
>> I think it is an inverting 8 channel bus tranceiver.
>> I need information on which way the drivers go with
>> the direction control and is the enable true or false.
>
>I think you mean DP8303 / DP8308? Both of these are 20-pin DIL 8-bit
>bidirectional transceivers; the DP8303 is inverting and the DP8308 is
>non-inverting. In both cases, the A port is pins 1-8, and the
>corresponding B port pins are 19-12.
>
>On the DP8303 (and DP8304, which is the non-invering equivalent) Chip
>Disable (active high to disable) is pin 9; pin 11 is Transmit/-Receive;
>"transmit" (pin 11 high) means A is input and B is output.
>
>On the DP8308 (and DP8307, the inverting equivalent), pin 9 is
>-Transmit and 11 is -Receive (both active low).
>
>On all of them, port A can sink up to 16mA and port B can sink up to
>48mA.
>
>The DP7303/4/7/8 devices are extended-temperature range versions of
>DP8303/4/7/8.
Hi Pete
It looks like you are correct, they should be DP8303's. Does anyone
have any of these or know where I can get any?
Thanks
Dwight
I need a really cheap place to get a laptop. It should be reasonably
powerful (The end user will be surfing and email and light word
processing) it must have: A non-windmodem modem (possible a pccard),
ethernet (again possibly a pc-card) a cd Writer. And the cheaper the
better.
The end user is borrowing one of my machines and they are really hooked
on the whole "work at home"
be an "affiliate" buy my ebook and sell it yourself thing. I would
rather they had their *own* machine
that they could fill with spyware and junk. ;^)
I don't want to hassle with ebay.
Thanks.
If this is too off-topic you can reply off list to:
ron.hudson at sbcglobal dot net
Hi
I've made a punch setup that seems to work. I used
the frame of an old SA400 ( broken before I got it ).
I can punch the needed holes but it is not a high speed
production system. I figure for my time, a box of ten
for $10 is a lot cheaper than my rates. Still, for my
uses, punching them myself has personal satisfaction.
If anyone is interested, I do have bootstrapping
routines for H8/H89 Heathkit machines so a person can
get their system up and running without a preformatted
disk ( it does need the 10 extra holes ). One can the
download HDOS through the serial port onto a fresh disk.
The Poly 8813/10 also use hard sectored disk. I expect
to do some work on a similar routines for these. Right
now, I can transfer files but it does take a boot disk
to get started.
I have a couple of Northstar machines but haven't had
the time to play with them. They are on my list.
Dwight
>From: "Joe R." <rigdonj(a)cfl.rr.com>
>
> They used to show up regularly on E-bay. One guy was selling them for
>the software on them. IIRC I bought a set of ten for less than $10.
>
> Joe
>
>At 11:31 AM 10/3/04 -0400, you wrote:
>>
>>Anyone know of a source of some inexpensive 5.25" hard sector diskettes (as
>>used in North Star and some Heathkit computers - 10 sectors)?
>>
LINCtape has the polarity of the clock track inverted, and the block
types are different from DECtape.
I'm sure Lyle can give you more details.. I'm heading out of town for
a few days right now.
Anyone know much about HP terminals (700/96) I have this beast hooked
to a serial port on
my linux box.. I am using a "serial laplink" cable and a null modem
adapter (that should be
two null modems together) I have agetty lines in my /etc/inittab
s1:2345:respawn:/sbin/agetty -L 9600,19200 ttyS1 vt100
s2:2345:respawn:/sbin/agetty -L 9600,19200 ttyS2 vt100
The terminal is set at 91200 and set to emulate a vt100..
I am not sure however if the terminal is "online" or not
Where is that switched? (does online or local make any
sense for a glass tty with no local storage)
Bob or Anyone....
In simh if I have an
att rl0 diskdrive1
And the simulator is running, If I rename diskdrive1 to something and
rename something-else to diskdrive1 does the simulator care? will it
start accessing the new disk image or continue to access the old? I
know this would have implications for the simulated OS (rsts on a
pdp11) but will it cause problems for the simulator?
Likewise what about the paper tape punch/reader and lineprinter files?
Could I use links?
$>ln rsts-rl-system.dsk diskdrive1
Then to change disk packs I
$>ln rsts-rl-othersystem diskdrive1
