I tried the Overland Data 5622 I bought; it seems to have big troubles.
On power-up, "Alert" blinks and it won't load - none of the buttons work.
I've temporarily given up on the M4 9914 and exploring the HP 88780.
It loads a tape almost always. It catches on the takeup reel, whips
into high-speed mode, then
Test 0 passes. I've run a few of the most interesting interactive test
sequences. NVRAM, timer, DAC, ADC, tach, motor loop, tension limit
and sensors, speed encoder, tape sensors, BOT/EOT sensors all OK.
Test 1 with a scratch tape fails within test 165 "load tape",
followed by "ERR 60".
Bitsaver's 7980 manual on page 5-119 (PDF pg. 186) says error 60 is
"tracks with gain too low and too high during autocal." Does this
mean I need to clear the NVRAM and run the "test 99" calibration?
I haven't changed or recorded the NVRAM values yet. Should I bother?
Anyone have experience with http://www.comco-inc.com/ ? They're only
a few hours away.
- John
At 12:01 PM 1/19/2006 -0600, you wrote:
>Subject: deformatting floppies
>
>
>I would have thought it best to take a magnet to a hd
>disk before popping in a 720k drive to be formatted,
>but it seems to not have any (or much) effect. Even
>using a chunky rare earth magnet! Can someone explain?
NOT a good idea: using a PERMANENT magnet. Could leave permanent magnetism
on the HEADS. I have been successful using a "bulk tape eraser" from Radio
Shack.. The kind useable on tape cassettes would be OK.. Move the disk
around a few times in contact with the eraser, then turn at right angles
and SLOWLY draw it away. Think slowly decreasing sine wave. This should
demagnetize the disk well, and MOST disks that give "Bad Media or Track
Zero" can be formatted.
Regards, Terry King ...On The Mediterranean in Carthage, Tunisia
terry at terryking.us
the genre - undoubtably techno. But regardless you all
are way weird LOL LOL.
--- cctech-bounces at classiccmp.org <aw288 at osfn.org>
wrote:
> > I have no idea what the music genre is, but the
name struck me as amusing
>
> There is also a Euopean band called Univaque.
>
> William Donzelli
> aw288 at osfn.org
>
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Somebody here (Joe?) was asking for configuration infromation for the
HP9000/382 I think
There's a CE handbook (boardswapper guide ;-)) on
http://www.hpmuseum.net/ It has some info on the video links, but from
what I can see there are just 2 of them. One disables the on-board video
(and allows the use of a DIO video card), the other must be set to the
'Color' position.
That site has quite a number of useful HP manuals for
larger-than-calculator machines. IIRC it starts from the 2114/2116/2100A
series and gores on to the 9000s. Calculators from the 9100 to the 9845
(and HP80 series too). And printers, plotters, storage peripherals, etc. I
find it best to follow the 'documentation' on the home page, rather than
try to negotiate the individual machine pages.
-tony
>From: "Chuck Guzis" <cclist at sydex.com>
>
>On 1/19/2006 at 3:06 PM Dwight Elvey wrote:
>
>> Yes, Intel did this on their Series II machines after
>>they had static problems. It killed two birds. Both
>>the static problem and the RFI.
>
>IIRC, the Intel boxes weren't plastic per se, but rather high-density
>structural foam. I recall that the model shop guys built the first
>enclosure for our prototype using acrylic (Plexiglas), which being clear
>looked pretty nifty, but then moved to foam once the design was finalized.
> The foam was funny--the shop devised a gag of making root beer ice-cream
>floats in paper cups and interspersing a couple in the bunch filled with
>structural foam, complete with straw and plastic spoon.
>
>AFAIK, all such enclosures are painted--the native color of structural foam
>is an unappealing yellow brown. Most of the paint shops added zinc arc
>coatings once using foam caught on.
>
>Cheers,
>Chuck
>
>
Hi Chuck
The early intel ones were just painted with the Intel blue.
It wasn't until after the static discharge problems became
recognized that they started to use the internal coat and
connected it to ground.
But, yes, it was not plastic. It was a lot lighter than
plastic but the entire unit is still quite heavy. It was
still using linear supplies.
Dwight
>From: "Chuck Guzis" <cclist at sydex.com>
>
>On 1/19/2006 at 1:45 PM Dwight Elvey wrote:
>
>> Not on the Plymophic ones. It is just a wood cover over a U
>>shaped metal chassis. I've not checked to see how much it
>>does radiate to radios and TV's. I suspect it isn't much
>>worse than a typical home setup with unshielded cables
>>to printers and such.
>
>Fortunately, there exists special paint to deal with the RFI problem:
>
>http://www.mgchemicals.com/products/841.html
>
>is one and there are others.
>
>A lot of the plastic enclosures were simply zinc arc coated.
>
>Cheers,
>Chuck
>
Hi
Yes, Intel did this on their Series II machines after
they had static problems. It killed two birds. Both
the static problem and the RFI.
Note: I miss-spelled Polymorphic.
Later
Dwight
I was wondering if somone knew the answer to this... is BATCH supported on
RT11 that is running TSX+? I know it's supported on RT11, but I thought I
saw somewhere that once you loaded TSX+ that you couldn't run BATCH because
of some conflict. Anyone know the straight scoop on this?
Jay West
I've just got an HP82971A RPTOM/ROM module on E-bay...
I thought from the description and part number that this was probably for
the HP Integral PC. And it seems I was right. I've not fully investigated
it yet, but I've traced a few connections from the DIN 41612 connector
through buffers to the EPROM sockets, and they all make sense.
It's a single PCB, normal Integral expansion card size, with the plastic
cover on the bottom and the normal bracket on the back. On the board are
a few TTL chips, mostly buffers, 16 28-pin DIL sockets for the EPROMs, 3
8-poisition DIP switches and not a lot else
>From a quick look at the conenctions, it would appear that the DIP
switches set the start address and also configure the board for one of 3
different types of EPROM (I would guess either 2764, 27128, 27256 or
27128, 27256, 27512). I think all EPROMs have to be the same type. The
sockets are helpfully labelled 0L, 0H up to 7L, 7H.
There's also a 64 pin header socket and mounting pillars for a
daughterboard. The socket iw wired pin-for-pin with the DIN41612 socket
that plugs into the Integral backplane. And the 2 EPROM sockets near the
centre of the bracket are actually individual contacts soldered into the
PCB, thuse making those lower profile than the others and leaving space
for a connector on the daughterboard to come through a hole in the bracket.
I am sure the hardware won't bother me at all, but I don't know the
format of the ROM images. I asusme they appear as a read-only filesystem
to HPUX, and that there are therfore headers in each EPROM containing the
filenames, sizes, start location, etc. Any ideas as to the format of that?
-tony
>From: "Richard" <legalize at xmission.com>
>
>
>In article <005001c61d33$2c0fac00$0200a8c0 at ntlworld.com>,
> "Jim Beacon" <jim at g1jbg.co.uk> writes:
>
>> A UK firm, local to my parents was offering PCs in wooden cases last year.
>
>Hopefully the wood was a cosmetic look for the exterior of the case
>and they had some sort of shielding inside!
Hi
Not on the Plymophic ones. It is just a wood cover over a U
shaped metal chassis. I've not checked to see how much it
does radiate to radios and TV's. I suspect it isn't much
worse than a typical home setup with unshielded cables
to printers and such.
Dwight
