Picked up a next turbocolor station early this week and it powers up but is password protected, anyone know a quick way around this ? Thanks in advance John
On Mar 27, 18:44, Richard Erlacher wrote:
> ----- Original Message -----
> From: Pete Turnbull <pete(a)dunnington.u-net.com>
> > On Mar 27, 19:57, Tony Duell wrote:
> > > fact behaves like the second type above -- a 98tpi (80 cylinder)
drive
> Surely you mean 96 tpi . . . right?
I'm sure that was just a typo on Tony's part :-)
> I'm curious ... How do you "set" a
> 1.2MB drive to behave as a 720-K drive, i.e. use that type of medium? It
> seems to me that, at a minimum, the controller would have to be seriously
> involved as well.
Assuming the HD drive is correctly jumpered, you simply get the controller
to put a low signal on pin 2 (density) of the interface. On most drives,
that will also change the speed from 360 rpm to 300; on others, not.
> > Furthermore, the media used in 96 tpi standard density disks is, in my
> > experience, the same as that used in 48 tpi standard density disks. It
> > even says so in my CDC drive manuals. However, as we all (ought to)
know,
> > the media for HD disks is very different.
> >
> The fact remains that there are diskettes specifically designated as
being
> 96TPI-certified, "QD" presumably for quad density, since you get twice as
> many tracks as with a double density diskette, which were, originally
sold
> at a higher price than the "360K"
Indeed, and I have lots like that, ie either "certified for 96 tpi" or in
a few cases, "QD". However, the differential is partly marketing, and
partly because manufacturers often tested 96 tpi disks more carefully for
microscopic blemishes -- a tiny defect might cause a disk to be rejected
for 96 tpi, but pass a test for 48 tpi. Many (most?) manufacturers used
exactly the same media/emulsion for both types -- I know for a fact that
Dysan and Verbatim did, although I also know that Dysan at one time made
disks that looked slightly different, and presumably those did use a
slighlty different coating.
> > > According to all the data I can find (which is not much), the centre
> > lines
> > > of the 48tpi tracks and the centre lines of alternate 96tpi tracks
> > > coincide. This means (amongst other things) that you can use the same
> > > alignment disk for both types of drive.
> >
> This would follow but for the technique used for writing radial alignment
> tracks.
I don't follow -- the instructions for my Shugart and Dysan alignment disks
clearly state that the disk is suitable for both 96 tpi and 48 tpi drives,
and lists the apropriate track numbers for the various tests, such as the
cats-eyes alignment test (and, yes, the track number for 96 tpi is simply
double the number for 48 tpi in each case).
> results I had and observed in others' lack of success certainly support
the
> belief that the media were not the same.
Perhaps you've been unlucky. I too have found some old 48 tpi media are
just not good enough, giving one or two errors, but most post 1980 are fine
-- and I suspect that's just the result of better quality control.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
>I have a copy of the Sharp PC 7000 boot disk if you would like a >disk
>image of it. Let me know and I can email a copy of it to you.
>
>Ernest
I already have a boot disk for this thing, but thanks anyhow.
______________________________________________________
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On Mar 28, 1:26, Technoid(a)cheta.net wrote:
> In <38E04821.4B8943AE(a)mainecoon.com>, on 03/28/00
> at 01:26 AM, Chris Kennedy <chris(a)mainecoon.com> said:
> >Is this a Sun cdrom drive? Random SCSI cdrom drives are prone to not
> >working unless they have a sun-specific hack to make the ID string they
> >return something identifiable to the boot prom. Differing Suns have
> >differing ways of refering to CDROM drives, and some insist that the
> >CDROM drive show up as ID 6. Have you tried using the prom diagnostics
> >to probe the bus to see who is home?
>
> I figured the id6 thing out by inferring from other info I hit on the web
> which was pretty slim on specifics. The drive is 6 and is a Toshiba
> XM-3701b.
> Maybe I need a single-speed cdrom?
Some older Sun boot PROMs won't recogise a CDROM unless set for 512-byte
blocks. Although the 3601 and later Toshibas recognise the SCSI
mode-select command to switch from normal CDROM 2048-byte operation to
Sun/SGI 512-byte operation, older PROMs don't issue that command. I'm not
sure about a Sparcstation 330, but you may need a drive that can be
explicitly set (such as a Toshiba 3301 or 3401; some Sony and Hitachi
drives also have a switch or jumper.
You might also want to switch from the "old" boot mode (prompt ">") to the
"new" one (prompt "ok ") by typing "n". PROBE-SCSI, HELP, and most other
commands are only available from the "new" prompt.
> BTW there are issues with this machine
> I have not yet resolved such as a parity error on a simm and what I think
> might be a power problem.
I'd fix that first :-)
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
>> >M7195
>>
>> 128 kbyte RAM
>It's actually a MXV11-B Multifunction card, with 128KB RAM, and ...
>> It's also particularly confusing, because you evidently have no serial
>> line cards nor disk controllers in the backplane. I have no idea
>> how you even got the ODT prompt out of the machine.
>... the MXV11-B has two SLUs, of the same type as a DLV11.
Yeah, that makes more sense. I still don't know how his machine is
supposed to boot from disk without a disk controller, though!
--
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
>By purchasing the i-opener you are agreeing to use the i-opener Internet
>service. The fee is $21.95 a month and will be billed to your credit card
>approximately 2 days after the i-opener is shipped to you.
And then $21.95 every month for the rest of your life? I seriously doubt
that such an open-ended contract is enforceable anywhere.
>i-opener Internet appliances shipped after March 20, 2000 can no longer be
>reconfigured in the manner described in recent reports. Modification of the
>i-opener in any way is in violation of our terms and conditions.
What terms and conditions? If you aren't allowed to see them (I poked
around a little bit and didn't find them) how can they be part of the
sales contract?
Wasn't it a Steve Martin movie that illustrated the "Substantial
Penalty for Early Withdrawal" clause? IIRC the depositor was given
a blindfold and shot...
--
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
On Mar 28, 3:00, r. 'bear' stricklin wrote:
> On Tue, 28 Mar 2000, r. 'bear' stricklin wrote:
>
> > GL2-3.6 (SGI's UNIX didn't come to be called until the first 4D-series
> > machines were released) and 3.5r1.
>
> -cough-
>
> What I MEANT to type was, of course, "didn't come to be called IRIX until
> the first 4D-series machines were released".
I knew that :-)
What I don't know, unfortunately, is the first thing about GL. Not that
sort, anyway. 'sifex' rings a bell, though. I'll ask amongst my friends.
Have you tried any of the c.s.sgi.* newsgroups?
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Try http://www.zepa.net/apollo/Apollo-FAQ.html
----------
> From: Peter Pachla <peter.pachla(a)wintermute.org.uk>
> To: Classic Computer <classiccmp(a)classiccmp.org>
> Subject: HP Apollo/9000s
> Date: Wednesday, March 15, 2000 06:04 PM
>
> Hi Does anyone know of a FAQ or other document which describes the HP
Apollo
> (700 series?) and/or the HP-9000 series of PA-RISC machines (9000/7xx?).
All this talk of RM380/480s has prompted me to admit that I own four:
2 x Link 480Z (with one 'beige' twin 5.25 drive)
1 x 380Z (twin 8" drives and winchester)
1 x 380Z (twin 5.25" drives)
The 380Z with 8" drives is fairly well loaded:
1) IO
2) CPU/32K #1
3) 32K
4) Hi Res Graphics
5) Winchester #2
6) Analog I/O
7) Network #3
8) Terminator
#1 Containing (roll on drums, wait for it tony) a daughter card
containing the CPU and the IEEE gubbins (connected to the 'IEEE
STD 488 PORT')
#2 A 5Mbyte 5.25" unit - unfortunately expired before I acquired it
#3 This card has more wire wrap on the 'back' than any other card
I've seen that wasn't designed as such
The serial number is 35/121003 and the etch dates are 1978 or 1979
with some cards have a cloth sticker of 1980.
Doug.
> > If you can wait a day or two, a fellow classiccmper and I are
> >going to be inventorying the Altos machines....
> >....there may be some documentation (we've several binders full
> >of it) on your machine.
>Thanks, if you manage to find out ANYTHING do let me know.
Sorry, nothing about the machine that you had described, though we
did find some Altos 5-series and 8000-series binders.
--
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
