If anyone's interested, I've recently updated my Star Trek page
somewhat. More BASIC versions, a little more blurb, and Java and
Z-code versions at http://www.dunnington.u-net.com/public/startrek/
As always, corrections, additions, and comments are welcome.
Anyone got a FORTH or APL version?
--
Pete Peter Turnbull
Network Manager
University of York
On Mar 20 2005, 16:39, Dave Dunfield wrote:
> Couple of weeks ago, I was contacted by a guy who said he had seen my
site,
> and has an "Black Apple" (Bell and Howell edition of Apple II for
schools)
> I responded by asking him for a price - he said $150
> He's left me on his mailing list, and since than has reported that he
had
> an offer for $500, then $1000, and this morning he says he has an
offer for
> $2000. I corresponded with him again and he says:
> >ok right now got offer for 2000 from people in uk. have 2 different
people
> >in uk that want it for good money.
There's one on eBay right now, in good condition, with working drives,
at $355 Canadian with 19 hours to go. I've seen them go a little
higher. I can't imagine why anyone would pay very much more than that,
and I suspect he's not had any offer near $2000. If he had, and you'd
already told him you weren't interested at $150, why would he bother to
contact you again? Anyway, don't forget you'd pay VAT and possibly
import duty if you bought one from the States.
--
Pete Peter Turnbull
Network Manager
University of York
I figure this might be a decent place to ask..
Does anyone know of a program I can use (preferably under Linux, but DOS
would probably work as well) to read a flux-transition level image off a
disk using a catweasel card? I'm trying to read some 2.4MB (5.25")
floppies from an IBM 3174 controller (using an 2.4MB floppy drive), and
am able to read in 1.2MB floppies using cw2dmk just fine, but it doesn't
do so well at processing the (aparently) mixed-density floppy I've been
screwing with since yesterday. Using the "testhist" program included
with cw2dmk, I can get information about the "unreadable" tracks, but
cw2dmk won't process them. I'm trying to make a backup image of a disk
so that I'm not screwed when the disk stops being readable...
For those interested, it appears that "2.4MB" floppy drives are 96 TPI
just like 5.25" DS/HD drives, but they support a higher bit rate.
Here's what testhist tells me for a "normal" HD track:
mii-300:/usr/src/cw2dmk-3.4# ./testhist 0 0 0 1 2
Reading track 0, side 1...
0: 000000 000000 000000 000000 000000 000000 000000 000000
8: 000000 000000 000000 000000 000000 000000 000003 000001
16: 000008 000005 000002 000005 000012 000006 000010 000479
24: 003590 012073 083091 150788 000112 000013 000004 000004
<snip>
peak 0: mean 26.52101, sd 0.67534
peak 1: mean 41.56100, sd 1.04145
peak 2: mean 55.25931, sd 0.90741
drive speed approx 360.943152 RPM
MFM data clock approx 510.486128 kHz
And for a higher density "2.4MB" track:
mii-300:/usr/src/cw2dmk-3.4# ./testhist 0 0 1 1 2
Reading track 1, side 1...
0: 000000 000000 000000 000000 000000 000000 000000 000000
8: 000000 000000 000000 000000 000000 000000 000324 000605
16: 000579 000472 006881 107754 120911 001047 000736 000639
24: 000743 000819 000079 000019 000003 000005 000000 000006
<snip>
peak 0: mean 19.51057, sd 0.82054
peak 1: mean 33.65562, sd 1.27275
peak 2: mean 48.29739, sd 0.48487
drive speed approx 374.227723 RPM
MFM data clock approx 653.668108 kHz
I don't care so much about being able to interpret the data that's there
as much as just being able to make a duplicate of the disk which is
acceptable to the 3174 controller when this disk bites the dust.
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
>He's left me on his mailing list, and since than has reported that he had
>an offer for $500, then $1000, and this morning he says he has an offer for
>$2000. I corresponded with him again and he says:
>>ok right now got offer for 2000 from people in uk. have 2 different people
>>in uk that want it for good money.
>
>This seems completely ludicrous to me --- I know B&H Apples are considered
>desirable by some, but $2000 (and shipping from US->UK)!!!
There is on on eBay right now, known working, although not with black
drives (but with a working Apple II drive, there are two black B&H drives
also available for $20 each in another auction). $355 with 15 bids and 20
hours remaining. The pics aren't loading for me, but the description says
it is near mint condition. I could see it getting up to $500 before it
closes, but $2000... I'd be surprised.
The $150 price he asked was probably a good price (I'd have likely taken
him up on that price). But whether he really has $2000 offers vs he is
just claiming that to make you feel bad for passing on $150 deal (and
possibly hoping you are an ignorant collector who will suddenly think the
thing is worth thousands and offer him $2500 for it).
But who knows, there has been some insane prices on things recently.
-chris
<http://www.mythtech.net>
Unearthed a Sun 2/120 yesterday (CPU cabinet plus disk cabinet plus mono
screen) but unfortunately no sign of a keyboard or mouse.
Anyone know if a later Sun keyboard and mouse can be wired via an
adapter to work? We've got a couple of Sun 3 keyboards & mice kicking
around which would be enough to test the machine out at least.
Both the keyboard and mouse connectors on the Sun 2 are 6-pin RJ45-style
connectors (they're probably not called RJ45 in this case as they're
smaller, but you get the idea).
Actually, I have a feeling that the mouse on our Sun 3/50 uses the same
connector (where it plus into the back of the keyboard) so that might be
the exact right part. The keyboard on the 3/50's a DB15 though...
cheers
Jules
Anyone interested in a user guide for Microsoft Word 2.0 specially made for
GE (General Electric) ? Its basically a normal manual with 848 pages but
with a GE cover and the text "GE Business Use Only" on it.
Stefan.
-------------------------------------------------------
http://www.oldcomputercollection.com
Hi All,
Anybody able to tell me the difference between the M8728 (11/70 MOS memory board)
and the M8750 (11/750 MOS Memory board) or why DEC decided to assign 2 numbers
to it (the M8750 has this number stamped on the handle, but the board bears
the number M8728!)
Thanks,
Ed
--
edward at groenenberg.net | Collector of PDP-11's.
http://www.groenenberg.net
Unix Lives! M$ Windows is crap.
'05 GSX-R1000
I have just come into possession of a NextStation, unfortunately sans
media. Can anyone point me to where I can get iso images or CDs for this
beast? It's got NextStep 3.3 installed, but it would be nice to have a
means for recovery.
Also looking for the development environment and/or docs.
Thanks for any tips!
Steve
Awhile back I was looking for a caddy for my RRD40, but the ones I
found and received (thanks Joe) weren't for the RRD40 but for RRD42.
RRD40 takes a weird plastic-only caddy that looks like a pair of
pincers, precariously pinching a CD at the edges...(anybody who'd like
a pic can email me offlist).
Anyway, my RRD40 I discovered unfortunately was nonfunctional *sigh* :-{
The caddy with VMS7.1 was jammed inside and I had to strip the drive
down to the internal unit to extricate the caddy and CD. There doesn't
seem to be an EJECT button for the RRD40????
So after I've extricated the caddy/CD by raising the motor/spindle
clamp manual, I discovered I cannot insert/load the caddy/CD with
raising the spindle clamp. Of course I could only do that with a
topless unit...
I could only conclude that the load/eject mechanism is kaput....
Any clues anybody? Or time to look for another RRD40....
/wai-sun
p.s. I had hopes for the RRD40 to be a boot device for my u/VAXen...
Yipppeeee! The 9915B now works. My remaining worry is that I do not
know why! After removing things to allow me to check them in isolation
and then putting them back, I started providing power to the different
parts of the PSU. First the +12V supply worked, then the -5V and -12V
supplies worked, then the +6V, and finally the +5V. Every time I expected
the fuse to blow, but it didn't. So now the whole thing works fine.
The 9915A still does not work, but I have found that C45 (the thin tall
390uF capacitor connected to pin 4 of transformer T2 via diode CR12) is
shorted. That removes power to the V+ supply taking out the +6V and
the +5V supplies.
Now all I need is a replacement for C45 and I am in business.
Many many thanks Tony.
BTW the first time I looked at the 9915 motherboard I freaked out,
because the PSU is all over the place. In some cases analog components
are located right next to the digital logic. But with Tony's help and
his schematics, I managed to map my way around the board. Now when I
look at some part on the underside, I know which components are on the
other side. Like an adventure game that you have played many times and
have the layout in your mind.
Real fun.
**vp
