What's an RA90? Can I use one to replace a RA81?
Are they removeable? Heavy? Bizarre? How big?
The point is, this RA81 is dying and I have a chance to get a RA90.
I haven't even seen it yet. Is this worth it?
-------
Sorry, but this is just a thought... if HP could give Win 95 LICENCES, and
you could find a 3.5" copy of Windows 95 (and the HP's have 8MB RAM), you
could run Windows 95 fine. I'm running it on my DX/50 here.
Hope that this helps,
Tim D. Hotze
-----Original Message-----
From: Kip Crosby <engine(a)chac.org>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Tuesday, March 24, 1998 7:45 PM
Subject: HP Win 3.1 -- off topic, but need help
>Yesterday I did the Silicon Valley Elderhostel comp. hist. lecture, and in
>the Q&A afterwards, a woman from one of the gold rush ~ghost towns in the
>Sierra said that her school had been given two HP Vectra 486's, but with no
>OS's. HP has been forced to follow MS' ultimatum (who but MS could or
>would step on HP?) and can only supply her with Win95, which these boxes
>don't have the horsepower for, on CD, but.... no CD drives either. She
>badly needs HP Vectra OEM Windows 3.1(1) on 3.5" floppies, and HP's
>response to her is basically "We're only allowed to tell you that that
>never existed."
>
>Can anybody help with a copy? TVMIA --
>__________________________________________
>Kip Crosby engine(a)chac.org
> http://www.chac.org/index.html
>Computer History Association of California
>
>
I have two SMC70'S I would like to sell. Both work great. One is a
bare-bones model, but the other has a Genlocker, NTSC
Superimposer(SMI-7074), and Cache Disk Unit(SMI-7050). The software
includes CP/M, Sony Basic, Sony Graphic Editor, Sony Video Titler,
Q-Manager, Wordstar and other disks. I also have a program that will
convert CP/M AND PC files. I have manuals for Sony Disk Basic, CP/M,
Sony Graphics Editor, and Wordstar. I also have a copy of Commodore
CP/M 128 User's Guide. If You are interested, please call me at
(201)246-0998.
Sincerely,
Manuel Neno
All right, guys,
After conferring with Allison, we found out thus:
>
> <Could you check the grounds on one row of IDE pins it's very easily
> <visiable on solder side if it's more than 4 pins in middle, it's XT
> <ide interface otherwise it's true AT IDE and yeah you can slave this
>
> All the even pins on the drive are ground, it has the 42c22 chip. I
> suspect 8bit (xt) IDE. If mueller is to be believed it's 8bit IDE.
This is right, that 93028-A is original pack with ATA logic board but
somehow was blown, (Commonly happens), so someone found a good XTA
interface logic board from dud 93028-X hd and installed that to this
good pack. I suggest you cross out that -A and scribble on a -X?
I had so many logic boards of all kinds of Tandon make and WD make,
packs were bad too and that shows how high failure rate was with
these design. Worst design indeed. Even the same period of time an
ST1102A had 150K MTBF compared to those drives with 30K.
> <Also, Allison, check that 8 bit card, sometimes it's rare to
> <find one
> <that will support AT IDE drive on that 8 bit card.
>
> I have an accutrack isa-8(xt) adaptor for standard ATA IDE it has a
> miniscribe 8051A hooked to it.
(!!) I have Miniscribe 8051A too. Thermal problem, stays dead but
spinning and making funny noise for few minutes then power cycle it,
comes up fine. This is only oddball hd I know of that used moving
magnet with the coil fixed to the hd case.
Snip.
> They exist. IDE drives plugged into XTs are no big thing and JAMCO or
> JDR has a board for that. A friend has a PS2/30 (ISA bus) with a 420mb
> WD drive via the accutrak adaptor.
>
> I designed an adaptor for my s100 crate to use the 16bit wide ATA ide
> on the z80 (8bit data bus). doing that for XT is about the same task.
I wish I could learn to make a simple adapter for both 16bit and 8
bit wide, using an ATA drive. So far, I was bit frustrated with some
info I found on the net. Did you got good one I that I could
understand how to design one? For starter, making a GOOD complete
buffered type card with IORDY selectable ATA card for ISA bus?
Far as I can understand, a choice of binary setup for first address
10 bits long selects the IDE address beyond that zip.
Many cheapo cards have partial buffering which is bad for the IDE
chipset. Is this assumption correct?
>
> I can use an 8bit IDE drive for a CPM system.
Then use this that WD 93028-X for this CPM system?
>
> Allison
Jason D.
email: jpero(a)cgo.wave.ca
Pero, Jason D.
capability. The drive that you have - unless someone has swapped logic
<cards - cannot be expected to work with the 8 bit card.
Whatevery you do wisper that... it's running with the 8bit ide adaptor
in my xt.
There is no reson to suspect the card was ever swapped.
Allison
In-hand - Intertech Data Systems Superbrain / Superbrain II product
schematics package. April, 1982.
"This schematic package contains all technical documentation required to
effect competent repair on the Intertec system if service should ever be
required".
Anybody in need of this info now knows who to ask.
Cheers
A
Just picked up a Mac II for $15, looks like 5MB of RAM or so, 68020 & 68881
FPU, two 800k floppies, an 80MB hard drive with three partitions, and an
ethernet card. I swapped out the old Mac II video card since it didn't work
with my monitor(64k Mac II video cards from Apple don't do very much) and
put my Radius Pivot monitor/card in it, and it works OK now. It's running
System 6, so I'll have to upgrade to at least 7.0(i think I have it on 800k
around here somewhere) or maybe network it and install 7.1... Also got two
"black boxes" for free, one is an automatic RS-232 switcher, and the other
appears to be a RAM buffer for RS-232. More info after I figure out exactly
what they are... Tonight is going to be busy(upgrading with spare parts I
have, looking for info, etc...)!
--------------------------------------------------------------
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--------------------------------------------------------------
<a)Step-up transformer - how much would 110-220 1700 watts min. cost?
About 25-50 pounds in weight never mind cost.
<b)Using a bunch of PC power supplies to power the DC components.
<My first problem is how I trick a PC/AT power supply to stay on when
<it's not hooked up to anything. Do I need to short something?
Don't do it. First, switching powersupplies get real upset if the are not
loaded to some minimum point, they gernerally don't like running in
parallel and the other is power sequencing.
<Next is the problem of pinouts on the 34. There is ground and +5v
<labelled clearly. THere is also a circuit board with lots of screw
<terminals. Could someone tell me the voltages on those (it's a board
<right below the CE panel and a bit on the right)?
Get and learn to use volmeters. There may be unsafe voltages or currents
at low voltages that can be dangerous. Also miswiring could toast the
machine fully and very completely.
USE EXTREME CARE, I'm not close enough to adminster CPR. Maybe I should
get with you one day and look at this beast.
Allison
"Richard A. Cini" <rcini(a)email.msn.com> wrote:
> Well, I resolved the tape drive access problem on my Sun3 workstation.
> Although no other device on the SCSI chain is terminated, the Sun3 does not
> like the DD50 passive terminator that I have on the end of the chain; it
> will only access the drives on the chain without it.
This may be one of those wacky things that crops up w/r/t funny things
Sun does with the termination-power line on the bus, or a tape drive
that terminates the bus itself (or on the MT02 card if that's how the
tape drive is hooked up).
> start c/t/s blks c/t/s
> type
> a(root) 0 0/0/0 29297 61/00/17 4.2BSD /* 15mb
> boot
> b(swap) 0 0/0/0 0 0/0/0 swap /*
> swap (would like this to be ~10mb)
> c(disk) 0 0/0/0 601920 1254/0/0 unused /* disk
> d(user) 0 0/0/0 0 0/0/0 unused
> /* user
> I can create the root partition (and write it to the disk as shown
> above) with no problem, but I cannot create the swap and user partitions. I
> get the following error: "ioctl DIOCWDINFO: invalid argument".
I'm not sure what edlabel is, but if you are running SunOS, there
should be a program called format that has a "partition" command
that lets you set the individual partitions. Once you get into
partition mode, you type the letter of the partition you want to
set, and it prompts you for a start and a length. Lather,
rinse, repeat until done. Then you need to write the disk label
to the disk.
Convention is that the c partition is set to cover the whole disk.
You don't actually newfs or mount it, it's just there for things to
look at. (Does anything actually depend on this any more? I don't
know.)
So I'm guessing you want to set partition b to start at 29297 and
be length 20480 (for 10MB, are you sure that is enough), and
partition d to start at (29297+20480=) 49777 and be length
(601920-49777=) 552143.
Or am I missing something here?
-Frank McConnell
Well, I resolved the tape drive access problem on my Sun3 workstation.
Although no other device on the SCSI chain is terminated, the Sun3 does not
like the DD50 passive terminator that I have on the end of the chain; it
will only access the drives on the chain without it.
Anyway, I can now load the tape boot image and start the mini-kernel.
Really, the question that I have today is related to the "edlabel"
partitioning program. Although the following results from using edlabel, the
question is more about disk partitioning in Unix.
The drive is a 330mb SCSI hard drive with the following geometry: 512
bytes/sect, 32 sect/trk, 15 trk/cyl, 1254 cyl (as reported; maybe should be
1408 cyls?). Running edlabel reports the following:
start c/t/s blks c/t/s
type
a(root) 0 0/0/0 29297 61/00/17 4.2BSD /* 15mb
boot
b(swap) 0 0/0/0 0 0/0/0 swap /*
swap (would like this to be ~10mb)
c(disk) 0 0/0/0 601920 1254/0/0 unused /* disk
d(user) 0 0/0/0 0 0/0/0 unused
/* user
I can create the root partition (and write it to the disk as shown
above) with no problem, but I cannot create the swap and user partitions. I
get the following error: "ioctl DIOCWDINFO: invalid argument".
This is the first Unix drive that I'm setting-up in a non-automated
fashion; can anyone give me the benefits of their experience in doing this??
Thanks!
Rich Cini/WUGNET
<nospam_rcini(a)msn.com> (remove nospam_ to use)
ClubWin! Charter Member (6)
MCP Windows 95/Windows Networking
============================================
