I'm still digging. I found more 550 stuff. I think this is everything
that came with the 550. Here's a chance for you 550 owner's to get the
whole set at one shot!
Original DS-DOS box and invoice.
Original Sanyo Easywriter ver 1.3 disk
Original Sanyo disk box with 550 dos ver 2.11 and BASIC 1.25, two
original Sanyo disk for InfoStar (set B disk 2 and 3 of 4; disks 1 and 4
are below), original Sanyo disk for DOS 1.25 and BASIC ver 1.1
Original Sanyo disk box with all three original disk of set A, WordStar
and CalcStar and a backup copy of DS-DOS.
Two card board dummy disks used to protect the floppy drives duing shipment.
>A few weeks ago we were talking about the Sanyo 550 series and someone
mentioned one of the alternates operating systems that supported 80 track
drives in the 550. I said that was DS-DOS by Michtron.
> Today I found an old Sanyo disk package with four disks for the 550. One
of them is DS DOS 2.11, one is InfoStar, one is MailMerge/SpellStar and the
other is a disk of misc utilities. The first three are original disks. In
additon, the InfoStar, MailMerge/SpellStar are Sanyo labeled disks that
came with the 550. If anyone wants them, trade me something I can use and
they're all your's.
I recently filled the car with these:
Apollo DOMAIN Series 3500
Domain series 3000 model 3010
HP/Apollo series 400
(2) Sun 3/60 + tape drive and tapes
Apple lisa 2
(2) apple II Ci
Mac SE/30 with radius monitor
Mac color classic
power mac 7200/90
Also available was a volker Craig terminal, and a copy
I also have "quite a pile of HP 712/715/725s in various
condition" for me to pick up when I get some space cleared.
IKEA has said that the missing piece to complete the
shelving will be delayed another 3 weeks, and my wife says
no more machines until the shelves are up!
hey do you have any ideas about using relays or some thing connected to a parallel or aerial port to control the power to an outlet, you know like a dimmer switch controlling motors ETC
if you have any thought or ideas I'd be glad to hear them.
I am getting my PDP-11/34 and my RK05 disk drives and packs tommorrow, and I have a few questions.They have have been in storage for years, and, although they have been kept dry, they are probably dusty. Can anyone tell me how to clean the drives and the disk packs before I use them?
Does anyone have any sort of info on this thing? I just picked one up at a
garage sale for $1. The guy I bought it from had no info about it. He said
it was in the basement of his house when he bought the house...
The case is about 6" high by 15" wide. It has a 1.2 MB 5.25" floppy and a
ST-225 HD in it. It has a 286-10 CPU in it, but when "turbo" (it's software
controlled - "boost.exe" makes the computer beep then lights a green LED on
the front)is on, it clocks at 13.5 MHz (QADiagnostics). There is a 3.5" bay
that's the same height as a 5.25" floppy (anyone have a drive that'll fit in
here?), and the three LED's (green, red, green - power, HD, turbo) aren't
labeled. The cover over the HD bay is odd, too. It's frosted. Whenever
the computer's on, the green HD light can be seen through it, sort of like
the old Olivetti had.
The cards that it has are a standard MFM controller (although in a
non-standard place - it's set back About 1" from the back of the case, and
about 1" to the right of the card cage, and the ''tail" on the card's
mounting bracket goes through a hole in the motherboard)/ There's also a
standard CGA/composite video card, and an ARCnet LANcard. It has a BNC coax
connector on it.
As my luck would have it, though the "arcnet" directory was empty. All the
directories were empty but the DOS directory, and they all appear to have
hidden files, because I can't remove them.
The case is also made from a surprisingly heavy gauge of steel. All the
metal is about 1/32" thick, and it weighs about as much as a 5170 AT.
Anyone have any info on this? what it was mainly used for? Maybe a
keyboard to match? :)
Nope. No free slot. The long slot has an IBM 3363 controller in it, and
the other slot won't accept a long cart, because it hits the cooling fan.
Anyone know what the short slot's for?
Yes, I do have the reverence disk. The P70 has 4 SIMM slots.
From: Lawrence LeMay <lemay(a)cs.umn.edu>
To: Discussion re-collecting of classic computers
Date: Tuesday, August 10, 1999 11:33 AM
Subject: Re: IBM PS/2 P70-386 SIMM needed...+ a couple other things...
>> On 7 Aug 99 at 18:48, Olminkhof wrote:
>> > >Basically what I meant is banks of two. There's two SIMMS in a bank,
>> > 2
>> > >banks, totaling 4 SIMMS.
>> > >
>> > >If you install three 2 MB SIMMS, instead of getting a 6 MB memory
>> > >you'll get a 4 MB reading and a memory error.
>> > >
>> > Nope.
>> > You'll get a memory error until you run the reference disk. If you have
>> > error while running the reference disk then you have the wrong type of
>> > simms.
>> > It's not until you get to Pentiums that you need 72pin simms in pairs.
>> > >///--->>>
>> > > -Jason Willgruber
>> > >>
>> > >>I've never heard of this "sets of 2" stuff on these.
>> > >>They use the same simms as the desktop model 70 . . ie with
>> > >>detect circuitry.
>> > >>
>> > >>Hans
>> > >>
>> TMK most IBMs (as well as Ataris, Macs and NEXT) require matching simms
>> pairs, and as well presence detect in the case of MCA. There is a
>> to get around the P.D. on Peter Wendts site. While I have never tried to
>> single simm physically except to expand the onboard memory of my 8580 to
>> from 2 , IIRC all the docs mention this. I would certainly be delighted
>> this were not so. I have an IBM 486 Ambra (non-MCA) which also requires
>> in pairs but doesn't require PD and a single spare non-IBM 8meg which
>> unused because of this limitation. I have an 8570 A-21 desktop (25mhz and
>> co-processor) and other PS2s. There is also a 16 meg max limitation on
>> the PS2s altho there are workarounds for this I understand.
>> ciao larry
>I thought that at least one of the PS/2 model 70 motherboard versions came
>with 3 simm slots... I dont recall it needing simms in pairs on the
>motherboard, though it does use a non-standard, PS/2 style presence
>Does the original poster have a free MCA slot for a ram expansion board?
>I have one for a PS/2 model 70, that I assume would work in your system,
>assuming you have the reference diskette for your machine.
> > I saw a hardcover book from 1957 at the used bookstore, that discussed
> > digital computer circuits, and had chapters on vacuum tube logic circuits,
> > corememory circuits, some transistor circuits, etc. If this is something
> > that someone here is dieing to have, perhaps because you're designing
> > a vacuum tube computer circuit, just let me know and i'll try to get it
> > before someone else does ;)
> In fact, my plan is to build a tube computer someday soon. What was the
> title of the book, and how much was it selling for?
Well, several people have asked about this book. Its "Digital Computer
components & circuits" by R. K. Richards, 1957, reprinted 1958. He says
its a companion book to his "arithmetic Operations in Digital Computers",
which the bookstore also has, but thats just a general boolean-logic type
Anyways, the used bookstore wants $15 for it. Perhaps I should see about
1 History & Introduction
2 Diode switching circuits
3 Vacuum tube systems of circuit logic
4 Transistor systems of circuit logic
5 magnetic core systems of circuit logic
6 Large capacity storage: non-magnetic devices
7 Storage on a magnetic surface
8 Magnetic core storage
9 Circuits and tubes for decimal counting
10 Miscellaneous components and circuits
11 Analog-to-digital and digital-to-analog converters
At 07:35 PM 3/19/99 -0700, you wrote:
>Can anyone recommend a vendor for obsolete or discontinued chips? My
>specific current need is for an AMD chip: AM7992BCD (or equivalent).
www.alltronics.com in San Jose has a
AM7992ADC for $US 2.50. Don't know what the suffix means: package, speed, etc.
There is an expensive place that may even make some "obsolete" chips, I
think their name is Rochester Electronics.