Hi,
I'm taking a quick survey of who among us uses (or
at least owns) Kennedy 9x00 series tape drives.
I do and I know that some others do (e.g. John
<jpl15(a)netcom.com>).
Anyone else fit this description?
Jon
I have a few excess, unopened, Debian LINUX cd's with LUG/nut5 on the
disk. I haven't had time to examine these myself. They are marked as
made by SSC with their website listed as http://www.ssc.com/
They are in a nice plastic jacket. I paid $1 for each so that's what I'd
like to get from each, plus postage. I would post a flat postage rate
but there may be a person that wants a few so we'll go on a case-by-case
basis.
Let me know if you might be interested by direct email.
>> Dose any one have the pin outs for the disk drive port on the Apple II.
>> I want this information in order to cerate a disk drive emulator. Also,
>Here you are, at least for the 20 pin header on the original Disk ][.
>Note that it's a pretty low-level interface, so you may find it
>non-trivial to make something else that connects to it.
For those who do want to make something that connects to it, I
*heavily* recommend Don Worth's and Pieter Lehner's _Beneath
Apple DOS_, still being published by Quality Software. Everything
you might want to know about the Apple Disk ][ interface and format
is documented here in wonderfully clear detail. Buy it!
Tim. (shoppa(a)trailing-edge.com)
Andrew - maybe we can form a (very limited membership!) Dulmont Magnum users
group!
[To the group as a whole as this early Australian (& world) laptop maybe of
interest]
Perhaps my D~M~ is not quite the same as yours. Mine is black, runs on 7VAC
3A (SN #10630) and to make sure everyone knows it was made in Australia it
has the label "Kookaburra" in black on silver on the outer lid. The SN plate
says "Dulmont Electronic Systems Pty Ltd" and the inbuilt software (see
below) is dated 1984.
It runs DOS 2.11 but is like nothing I have seen in most other ways. This
one has no built-in storage, but has a large connector with two
closely-spaced rows of 30 pins on the back which I guess was for a floppy.
There are also two mini-D 15-pin female plugs that have been hand-labelled
"printer" and "serial".
At the top of the keyboard are two large green keys, one labelled OFF ON and
the other RESET, but there is a trick - to get them to work you have to
press
them with the SHIFT key. Perhaps this is why they are rare; unless you know
this trick you would think the machine was dead by just pressing the green
ON key!
There is no ALT key, and there are separate LF and RETURN keys. There are 12
function keys and a HELP key and these are used with the built-in menu
program (type menu from dos). The only software with this machine are two
little cartridges, one each of which plug into slots on either side of the
hinged lid under a fairly hard to remove section of plastic that forms part
of the case. The cartridges here are MAG CALC and MAG WORD, each
accessible from the menu program. I haven't actually played around with
these yet.
BASIC would be on a cartridge like this, but it did not come with this unit.
I can not find anything on the net other than a German equivalent of the
French list referred to by others.
Phil Guerney
Brisbane, Australia.
-----Original Message-----
From: Andrew Davie <adavie(a)mad.scientist.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, 23 November 1998 14:48
Subject: Dulmont Magnum
>I've just obtained an unusual laptop circa 1983, a Dulmot Magnum.
>Garbage-bin green body, quite heavy. Runs on 6V, MS-DOS 2.11 Very strange
>flip-up LCD display, about 8 lines x 80 characters. Actually, this thing
is
>pretty well designed for its day.
>Does anybody know about the history of this machine, and where it fits in
>relative to other laptops of the era (ie: what was the first genuine
laptop,
>when, etc) ?
>
>--
>Andrew Davie
>www.comcen.com.au/~adavie/slide/calculator/soviet.html
>adavie(a)mad.scientist.com
>ICQ# 3297382
>
>
Dose any one have the pin outs for the disk drive port on the Apple II.
I want this information in order to cerate a disk drive emulator. Also,
is there an eqivlent of Fast Hack 'Em for the Atari 800. This is needed
to make disk images for backup pourpouses.
Charles
R. Stricklin (1,2,*)
John Lawson (1,2,3)
Mike O'Malley (1,2)
(1) ...the box arrived
(2) ...thanks!
(*) ...thanks a lot!
(3) ...e-mail me please
Sorry for the public posting, I don't have e-mail addresses for you guys.
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Always being hassled by the man.
Coming in 1999: Vintage Computer Festival 3.0
See http://www.vintage.org/vcf for details!
[Last web site update: 11/02/98]
> From: Phil Clayton <handyman(a)sprintmail.com>
> Subject: St. Vincent DePaul Finds
>
> Interesting find at the local Thrift store. A large box of 3-1/2
> diskettes
> for the Amiga 500 computer.. There must be over 500 different programs
> all neatly labeled and neatly packed in a nice box.. I did'nt know so
> many
> programs even existed for the Amiga. Should be fun looking at all this
> stuff.
It was pretty popular with games and graphics designers before IBM developers
got a clue and Gould/Ali really milked thier cash cow... Sure wish some of
those games were made for the Mac, but alas,
it didn't have the potential then either.
> Now I have to unpack my old Amiga and see what treasures I have found..
>
> Also inculded in the find was 6 books for the Amiga and 6 books for the
> Commodore 128 computer, including a large Tech Reference manual..
I'll say.
> Best was a book on C/PM for the C-128 (Really like that one)..
That's the one you got with the newer version of CP/M when you sent in the
$20.00 with the card in the users guide. All in all 20.00 for that book, the
newer CP/M (which finally supported the 1581) and CP/M utilities was a great bargain.
> ------------------------------
> From: Phil Clayton <handyman(a)sprintmail.com>
> Subject: Uknown Cartridge found..
>
> Forgot to mention in my find was a cartridge titled
> "Mach 128" its by Access software inc..
> Obviously for the C-128, but don't know what it does..
> Has a switch on top and a reset button? on it..
> Anyone ever seen this Cart before ?
It's a fast-loader for the 128 (that's where the Mach comes in , the 64
version was called Mach 5) It might also be a program freezer/utility. Put it
in your 128 and push the reset button, some of these will present a menu (for
save options and such). The switch is probably to select whether the cart is
active or not. Best not to switch it while the computer is on.
--
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
Larry Anderson - Sysop of Silicon Realms BBS (300-2400bd) (209) 754-1363
Visit my Commodore 8-Bit web page at:
http://www.goldrush.com/~foxnhare/commodore.html
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
>> Hi all!
>>
>> Thanks to everyone who supplied information regarding the differences
>> between the 6550 and 2114 (especially Ethan who supplied pinouts).
>
> You're welcome.
>
>> I'm wondering if it would be possible to replace the RAM in an old PET
>> with a modern SRAM by use of some kind of plug-in adapter.
>
> Sure thing.
>
>> An example of what I'm thinking of is the SIMMfonie or AmiFast
Zip-to-SIMM
>> adapters for the Amiga 3000. Could something like this be built that
>> would plug into the 16 22-pin sockets on the PET motherboard, and lead
to
>> a single modern SRAM? Possibly with the addition of a couple of clip-on
>> leads to get two more address lines to the RAM adapter so that the PET
>> could have 32K.
>
> There is that big edge connector on the side of the static PETs (it was
> two seperate pin connectors on later PETs). All the signals you need for
> RAM expansion are there. For maximum preservation, I'd consider pulling
> all the 6550's out of the board and sticking them in a bag. Then, wire
> up a 6264 (or 62256!) to a small board after finding a suitable
connector.
> I expect the pinout to be on ftp.funet.fi, but if it isn't, I can dig
> out my PET schematics. If I still had my old 4K PET, I'd build one, too.
>
> You shouldn't have to build a clip-on, but if you did, there's nothing
> to keep it from working. You can get all the data bits from two sockets,
> and all the address bits from one socket, plus the additional bits
> from somewhere else. Remember that part of the logic in the PETs decodes
> the A8-A11 lines to chip selects. You need the original address bits,
> not the decoded ones.
Right. Here goes. Answers to one or two other people's questions may be
embedded here...
The original PET came with four different motherboard variations, viz:
RAM = 6550, ROM = 6540
RAM = 6550, ROM = 2316
RAM = 2114, ROM = 6540
RAM = 2114, ROM = 2316
My own is the third of those, a 1978 revision (a pity in a way - the case
has the old tape deck, the blue screen surround and serial number 1000035,
one of the very first)
I have circuits for all four, if you need help.
All had the "chicklet" keyboard. Not rubber keys in this case, Cameron.
Square plastic keys in a very small qwerty-but-no-offsets arrangement.
Little helical springs for key return; conductive rubber pads onto
interdigitated PCB tracks for contacts.
All but the last few machines of the production run had blue-white phosphor
for the screens.
BTW, all those of you who never used number pads for lack of comma keys, on
the small keyboard PETs the numbers were ONLY on the number pad. Top row
was punctuation only...
But I digress.
The top 4 address lines are decoded on the mobo by a 74154 to give block
select lines. The block select lines 0 (bottom 4K of RAM), 8 (screen
memory) C, D, E (I think) and F do _not_ appear on the expansion connector.
All others do. The rest of the address lines (0 to 11) are also present.
It is quite easy to re-encode these for addressing a large RAM chip
(62256). You need three 4-input NAND gates - two 7420 chips will do it.
(NB you are actually ORing block selects, but these are active low, so you
use NAND.)
(Also NB it is a long time since I looked at this. You may want to use AND
gates to keep things active low when you do chip select with the 4th gate)
The 4th NAND gate can combine chip select and clock and things - copy a
circuit from the motherboard (yes I'll send you the schematics if you want
- e-mail me privately).
If you're only attaching 8K, you need merely combine 2 block selects to get
chip select (a single AND gate), and use one of those for the top address
line A12.
When I added a 62256 to my 8K PET, I encoded the block select lines for 24K
of RAM space and 8K of expansion ROM space (blocks 9 and A). Beware - POKE
also fails here, not just PEEK, if you're accessing this RAM from BASIC.
If you've got an 8K PET with some dud 6550s, try and swap them around until
you have 4K of good memory, and remove the second 4K. Then map 28K of RAM
space and 4K of ROM space to your memory expansion chip.
If you've got a 4K PET with some dud 6550s, you'll have to find block
select 0 from somewhere on the mobo.
WARNING. +5V does NOT appear on the expansion connector. Most people get
it from the second cassette port, but it won't drive anything big. 62256 +
a little TTL is fine though.
Hope this helps. My explanations tend to confuse people...
Philip.
And no, I don't mean the "work your finger under the suction cup" method.
Kaypro-specific would be nice (what's a good ground point in there?) but
general help would be fine. The last time I had to do this was when I
replaced the P/S in my Mac plus, about 7 years ago, so a quick refresh
would be good.
Also, I think there was something about this on the list a little while
back but I can't find it in the archives. What would some possible causes
be for a high-pitched screech/whine and a distorted display (um, for a
computer display, that is...)?
Thanks,
Aaron
Well, I finally got around to ripping apart the HP3000 rack I got from
John Lawson a couple of months ago. And desperately need some pointers...
I've read the HP3000-L FAQ and searched most of the day for info, but
there isn't much geared toward the Classic HP3000 home-hobbyist.
What I've got is this:
9144 tape drive - I've already deduced that it's a low-density, 16-track
capable of 67/134 megs and the tapes have to be purchased pre-formatted.
2563A Printer - with a modular connector.
9123 3 1/2" dual floppy - picked up after-the-fact at a yard sale. It's
HP-IB, but has a weird DIN power connector cord. No P/S.
(2) 7914 drives - one of these may be a non-op, having suffered some
damage during transit.
(2)HP3000 series 37's - these are piggy-backed, is this the usual
configuration? . Here's where I need some info:
The "top" unit has a DB-25F in slot one, and an HP-IB in slot 4, as
well as those DE-3F (correct terminology?) connectors in ports 0-5.
The "bottom" unit has the DB-25F in slot one, the HP-IB in slot 4,
and an AUI (ethernet? Is this a Lanic board?) in slot 5, as well as
the 3-pin deals in ports 0-5. Above the ports is a female
Centronics-50 which connected to what I believe is a terminal
splitter, p/n 40290-60003. Above that is a *very* high-density 99-pin
male connector, this is attached to the board with the HP-IB
connector.
The two units are connected vi an HP-IB cable on port 4 of each. Also,
the top has the keyed power switch for both.
What I need is *really* basic info on the system and some pointers to
information sources. Some quick ones:
1) How in the heck do the two 3000/37 units come apart?
2) How do I wire a terminal to this?
3) Is the AUI connector an ethernet card? A lanic card?
4) Could someone please ID all the rest of the ports?
5) Is there a graphical display capability on this machine? As an add-on?
6) What kind of Pertec tape interface is available for this machine?
7) If my 2nd drive is damaged, how might I go about getting an OS for it?
I apologize for such a long post and my absolute lack of knowledge here. I
had a buddy who was supposed to help me out (3000 guru) but he's just gone
overseas for work indefinitely. It's such a cool system, the way it's put
together, and there's a bunch of neat freeware that I'd love to use too.
Any help at all would really be appreciated.
Thanks,
Aaron
