9 Feb
1998
9 Feb
'98
7:30 a.m.
I just picked up an AppleII and 2 FDDs with a bunch of add-ons
at a local thrift store. The only Apple I have explored is my Mac+.
Anyone able to identify the cards ?
A Disk II interface card...... obvious.
Ram Module by Multiflex Tech Inc.....I imagine additional ram
Grapple+ Printer Interface......... Serial, Parallel ??
Multiflex Tech ...Long card with kludged cable to an RCA male
connector and another to a clothes-pin chip staddler labelled
AP TC/14. Two labelled chips "Firmware" and "Char. Gen." (imagine
this is a video card of some sort.)
Modem 80 card with 2 tel. jacks........... Baud-rate ?
CableTV kludge to a "SUP 'R' MOD CH.33 TV Interface Unit ??
External added-on connector 2x3 blade (like an AC outlet but with 3
pairs of smaller female recepticles in one unit) ??
It also has what I imagine is stock Ext. video (single RCA) and
cassette (2 mini-pin i/o )
Any help appreciated.
ciao larry
lwalkerN0spaM(a)interlog.com
10 Feb
10 Feb
12:50 p.m.
At 18:30 2/9/98 +0000, you wrote:
I just picked up an Apple II and....a bunch of
add-ons....
Anyone able to identify the cards ?
CableTV kludge to a "SUP 'R' MOD CH.33 TV Interface Unit ??
The Sup'r Mod was the RF demodulator that one of the Steves talked Marty
Spergel into making as a third-party product, because then the Apple II
could be marketed under a much less stringent FCC restriction. As you might
imagine, Marty got passably rich.
__________________________________________
Kip Crosby engine(a)chac.org
http://www.chac.org/index.html
Computer History Association of California
4:46 p.m.
On Mon, 9 Feb 1998, Lawrence Walker wrote:
I just picked up an AppleII and 2 FDDs with a bunch
of add-ons
at a local thrift store. The only Apple I have explored is my Mac+.
Anyone able to identify the cards ?
Grapple+ Printer Interface......... Serial, Parallel ??
A very nice parallel printer interface with a 64K buffer.
Multiflex Tech ...Long card with kludged cable to an
RCA male
connector and another to a clothes-pin chip staddler labelled
AP TC/14. Two labelled chips "Firmware" and "Char. Gen." (imagine
this is a video card of some sort.)
An 80-column card (Apple ][ and ][+ computers came stock with 40 columns).
CableTV kludge to a "SUP 'R' MOD CH.33
TV Interface Unit ??
This enabled Apple to comply the FCC requirements for a Class ? computing
device. This means you did in fact get an Apple ][ and not a ][+. Very
nice find, especially for a thrift store.
It also has what I imagine is stock Ext. video (single
RCA) and
cassette (2 mini-pin i/o )
Correct. The RCA is for a monochrome monitor. The two 1/8" phone plugs
are for reading/writing data from/to cassette, as well as digitizing audio
(ask if you're interested).
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
Coming Soon...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
12 Feb
12 Feb
3:18 a.m.
On 10 Feb 98 at 19:46, Sam Ismail wrote:
On Mon, 9 Feb 1998, Lawrence Walker wrote:
Thanks, Sam. I , hooked it up to my multi-purpose Commodore 1702,
dug thru some extraneous disks I had accumulated, put a program
called "Homeword" in the drive, and was pleased to see it works fine.
I had expected it to not work without an Apple-dos boot disk.
So far my problem has been sifting thru the wealth of material
available on the I-net re the Apple II. The csa2 faq seems to be
mainly about the GS.
I also have an Apple II Duodisk, which unlike the II fdd s has a
DB25 pin female connector. Were these for the GS or did Apple
simply upgrade the disk connections with the + or A-3. would it
work on a II with an adapter ?
I contacted the Toronto-area guy re the TRS-80 and am going to
be inheriting a bunch of TRS80 stuff including the HDDs and several
monitors as well as manuals and Tandy CP/M (??) which I wasn't aware
of. He's also giving me some AppleII s. Must be my year for Tandy
Apples :^)) (couldn't he'p mself.)
ciao larry
lwalkerN0spaM(a)interlog.com
I just picked up an AppleII and 2 FDDs with a
bunch of add-ons
at a local thrift store. The only Apple I have explored is my Mac+.
Anyone able to identify the cards ?
Grapple+ Printer Interface......... Serial, Parallel ??
A very nice parallel printer interface with a 64K buffer.
Multiflex Tech ...Long card with kludged cable
to an RCA male
connector and another to a clothes-pin chip staddler labelled
AP TC/14. Two labelled chips "Firmware" and "Char. Gen." (imagine
this is a video card of some sort.)
An 80-column card (Apple ][ and ][+ computers came stock with 40 columns).
CableTV kludge to a "SUP 'R' MOD
CH.33 TV Interface Unit ??
This enabled Apple to comply the FCC requirements for a Class ? computing
device. This means you did in fact get an Apple ][ and not a ][+. Very
nice find, especially for a thrift store.
It also has what I imagine is stock Ext. video
(single RCA) and
cassette (2 mini-pin i/o )
Correct. The RCA is for a monochrome monitor. The two 1/8" phone plugs
are for reading/writing data from/to cassette, as well as digitizing audio
(ask if you're interested).
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
Coming Soon...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
13 Feb
13 Feb
8:54 a.m.
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12 Feb
12 Feb
6:05 a.m.
On 13 Feb 98 at 11:54, Tim Shoppa wrote:
I carefully counted the pin recepticles and there were indeed 25.
Could this have been some sort of mod.? I checked out the URL
mentioned and it is for 19 pins and he states it is also applicable
for the Duodisk. The model # is A9M0108 ser# 392135. Very
strange.
ciao larry
lwalkerN0spaM(a)interlog.com
I also have
an Apple II Duodisk, which unlike the II fdd s has a
DB25 pin female connector.
Did you actually count the number of pins? All the Duodisks I've
ever seen have a 19-pin connector.
Were these for the GS or did Apple
simply upgrade the disk connections with the + or A-3. would it
work on a II with an adapter ?
Yes. See, for example,
http://www.visi.com/~nathan/a2/faq/diskiicable.html
to find David Empson's *extremely* detailed writeup on making such
a cable.
Tim. (shoppa(a)triumf.ca)
13 Feb
13 Feb
7:14 p.m.
On Thu, 12 Feb 1998, Lawrence Walker wrote:
The Apple ][, unlike some other computer systems, doesn't really need a
boot disk. All software that I ever had for the Apple had the disk
operating system included on the disk. You just stick it in the drive and
it boots. Apple DOS 3.3 took only 3 tracks of the disk (3 tracks * 16
sectors per track = 48 sectors). Some of this was bloat. There were
other DOS systems made by third parties that used even less space, like
ProntoDOS by Beagle Bros. which only used 34 sectors (2 tracks plus two
sectors on the 3rd track) making the other 14 sectors available for file
storage. ProntoDOS was also a "fast" DOS that sped up reading and writing
3 fold. There were plenty of alternate DOS' that provided this feature,
such as Diversi-DOS, DAVID DOS, Super DOS, etc. Most of these employed
some simple hacks to the original Apple DOS to make it fast by eliminating
some double buffering that Apple DOS was doing (reading data into one
buffer then copying it to its destination buffer). These fast-DOS's
loaded the files directly into their target memory address. Some added
little features to DOS to allow it to show free sectors on a disk and
other little enhancements. But the original Apple DOS code was so tight
that there wasn't much room left over for adding functionality without
either using up more memory (which would piss off programmers) or removing
other DOS functionality (which would also piss some programmers off).
> I just
picked up an AppleII and 2 FDDs with a bunch of add-ons
> at a local thrift store. The only Apple I have explored is my Mac+.
> Anyone able to identify the cards ?
Thanks, Sam. I , hooked it up to my multi-purpose Commodore 1702,
dug thru some extraneous disks I had accumulated, put a program
called "Homeword" in the drive, and was pleased to see it works fine.
I had expected it to not work without an Apple-dos boot disk.
So far my problem has been sifting thru the wealth of material
available on the I-net re the Apple II. The csa2 faq seems to be
mainly about the GS. I also have an Apple II Duodisk, which unlike the II
fdd s has a
DB25 pin female connector. Were these for the GS or did Apple
simply upgrade the disk connections with the + or A-3. would it
work on a II with an adapter ?
This drive connects to the Apple Floppy Drive Controller with the DB-15
connector (not DB25), not the Disk ][ interface (with the ribbon connector
cable). This drive works on the Apple //gs as well. There were also the
Unidisks (later simply called the Apple 5.25" floppy drive) which were the
counterpart to the Duodisk. Again, these connected to the new type
interface card which made the old Disk ][ interface not so much obsolete
but the new interface superceded it.
I contacted the Toronto-area guy re the TRS-80 and am
going to
be inheriting a bunch of TRS80 stuff including the HDDs and several
monitors as well as manuals and Tandy CP/M (??) which I wasn't aware
of. He's also giving me some AppleII s. Must be my year for Tandy
Apples :^)) (couldn't he'p mself.)
Cool deal. I'm glad that worked out for someone.
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
Coming Soon...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
7:26 p.m.
On Fri, 13 Feb 1998, Sam Ismail wrote:
Just to correct what I said, as Tim pointed out the connector is a 19-pin
type. Also, since I never owned a GS I did not realize that the Duodisk
did not automatically work with it.
Sam Alternate e-mail: dastar(a)siconic.com
-------------------------------------------------------------------------------
Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass
Coming Soon...Vintage Computer Festival 2.0
See http://www.siconic.com/vcf for details!
I also have an
Apple II Duodisk, which unlike the II fdd s has a
DB25 pin female connector. Were these for the GS or did Apple
simply upgrade the disk connections with the + or A-3. would it
work on a II with an adapter ?
This drive connects to the Apple Floppy Drive Controller with the DB-15
connector (not DB25), not the Disk ][ interface (with the ribbon connector 
16 Feb
16 Feb
7:36 a.m.
New subject: C64 Modem issue
I have a C-64c and a Commodore brand 1200 modem. Since I still haven't had
a chance to resolve the problem with my 1541 disk drive, I'd like to
explore using the modem a bit. Can it be done in BASIC? Meaning, can I
issue certain BASIC commands to init the modem and dial out? It's been a
while since I've messed with any Commie machine, and when I did, I couldn't
afford the "luxury" of a 1200 baud modem. This may be something simple, and
I'd appreciate any help, even a pointer to info on the internet.
Is there a termcap for the c64? I don't recall seeing one, but I don't
spend too much time skimming the innards of termcap files.
- John Higginbotham
- limbo.netpath.net
8:02 a.m.
New subject: C64 Modem issue
I have a C-64c and a Commodore brand 1200 modem. Since
I still haven't had
a chance to resolve the problem with my 1541 disk drive, I'd like to
explore using the modem a bit. Can it be done in BASIC? Meaning, can I
issue certain BASIC commands to init the modem and dial out? It's been a
while since I've messed with any Commie machine, and when I did, I couldn't
afford the "luxury" of a 1200 baud modem. This may be something simple, and
I'd appreciate any help, even a pointer to info on the internet.
Is there a termcap for the c64? I don't recall seeing one, but I don't
spend too much time skimming the innards of termcap files.
- John Higginbotham
- limbo.netpath.net
I think the answer to both of your questions is, yes. However, as I recall
while Linux once had a termcap entry for the C64, it's no longer in there.
Also the question of a termcap is a bit ambiguous, since you don't mention
what system you would need it for. IIRC it varies a little from UNIX to
UNIX.
As for the modem I'm positive there are basic commands you can use with it,
but the modem and manual I've got is in storage, I seem to remember seeing
a whole section on this in the manual.
But, why bother, just get a terminal program for the C64. You should be
able to get one off of the net. If you are serious about the C64, and
don't already have a X1541 cable made, all I can say is get to work. The
cable allows you to hook a Commodore drive (1541 or 1571 IIRC) up to your
PC's parallel port. Then using a couple different programs available you
can format and copy files to a C64 disk. I've got a 1541 that is
perminantly attached to my server! If only there was a Linux version of
the software I'd be truely happy :^)
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
| For the collecting of Classic Computers with info on them. |
| see http://www.dragonfire.net/~healyzh/museum.html |
8:29 a.m.
New subject: C64 Modem issue
At 11:02 AM 2/16/98 -0800, you wrote:
what system you would need it for. IIRC it varies a
little from UNIX to
UNIX.
It would be Red Hat linux, and if there's a termcap for the m100, there's
gotta be one for the c64.
don't already have a X1541 cable made, all I can
say is get to work. The
Do you know if anyone makes these cables and sells them? Or, barring that,
any specific links to the assembly instructions?
- John Higginbotham
- limbo.netpath.net
15 Feb
15 Feb
9:33 p.m.
New subject: C64 Modem issue
On 16 Feb 98 at 14:29, John Higginbotham wrote:
I just ordered one. Haven't received it yet but he seems genuine.
On 1 Feb 98 at 19:44, Jon Lucas wrote:
don't
already have a X1541 cable made, all I can say is get to work. The
Do you know if anyone makes these cables and sells them? Or, barring that,
any specific links to the assembly instructions?
- John Higginbotham
- limbo.netpath.net
Hi Larry,
The X1541 Cable is $12.00 Plus Shipping.
lwalkerN0spaM(a)interlog.com
Also how do you get the
Star Commander to your C64 without the cable ? If it is not
possible could you include the program ?
Star Commander can be found online by doing a search for it at
Yahoo.com. Star commander only needs to be loaded into your PC not
your Commodore Computer. Please read the following, I beleive this
will answer most of your questions.
The X1541 Cable is used to transfer files archived on a PC (files
usually obtained online) to a Commodore 1541 floppy drive (or
compatable) or a 1571 floppy drive.
NOTE: Software is required on the PC in order to transfer files to
the Commodore drive. Both Trans 64 and Star Commander are highly
recommended. Each of these programs can be obtained via the World
Wide Web.
One end of the cable plugs into your PC paralel port (your
printer port) and the other end plugs directly into your Commodore
floppy drive.
Make sure your Commodore drive is turned on before you start your
software on the PC (Trans 64 or Star Commander). Also make sure you
have a floppy disk in your Commodore Drive. Then just fire up the
software on the PC (make sure you read the documentation that comes
with the transfer software you wish to use) and start transferring
software to and from your Commodore floppy drive. Hope this helps
you out! If you have any other questions, do not hesitate to ask.
Thanks,
Jon
==
If you are interested in receiving this catalog plus future
updates and auctions Please send email with the word "Subscribe" in
the subject line.
Vintage Micro-Computers = Classic Computer Ressurections!
Jon Lucas <vintage_micro(a)yahoo.com>
16 Feb
16 Feb
9:53 a.m.
New subject: C64 Modem issue
what system you
would need it for. IIRC it varies a little from UNIX to
UNIX.
It would be Red Hat linux, and if there's a termcap for the m100, there's
gotta be one for the c64. don't
already have a X1541 cable made, all I can say is get to work. The
Do you know if anyone makes these cables and sells them? Or, barring that,
any specific links to the assembly instructions? 
7:44 a.m.
New subject: PDP-11/34 & DG Nova-3
Well I picked these up today and have now had a little time to look
over what all is there. I haven't had any exposure to the Nova or
the PDP-11 systems before so I'm a rank beginner with these. Anyone
who can give me a hand with getting these restored and running again
will receive much thanks and maybe a case of beer if they like. ;-)
What should be the next step in restoring these?
I have a DG Nova-3 which is cardless. I have the case but all the
cards have been pulled. No cpu, memory or anything else. I also
have the plug strip from the rack this was in. If someone knows a
source for the cards I'd need to bring this up please let me know.
The 11/34 has a little more with it. I received a 6' rack with a
small storage space near the top which contains 5 disc packs. A bit
below that is a RK05J drive. The drive has no cover on it, the
insides are exposed. I'd guess this isn't normal. Below that is the
11/34 itself. It has the octal front panel and decaying foam in
front. It also contains the follow boards from left to right looking
towards to back of the system:
M7257
M7256
M7255
M7254
M9202
H-228B
H-222A
H-222A
M7850
M9202
M7856
M7258
M7856
M7814
M7859 (Behind this is a M9301YF)
M8265
M8266
I'm currently looking all of these up in the PDP Field Guide.
I'll be posting some pictures of these systems on my website in the
next couple of days.
Thanks for any assistance.
-----
David Williams - Computer Packrat
dlw(a)neosoft.com
http://www.neosoft.com/~dlw
2:49 p.m.
New subject: PDP-11/34 & DG Nova-3
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11:30 a.m.
New subject: PDP-11/34 & DG Nova-3
On 17 Feb 98 at 1:49, Tony Duell wrote:
Yes, I suspect that is going to be the tricky part of restoring the
Nova. Still it was only $10 for the system and the plug box. I was
thinking of trying to mount it in the same rack as the -11.
I'll have to check in the morning when I get into the office.
The "Field Guide" I found lists this as a printer controller.
This one was listed as a "DZ-11 U 8-line 20ma data MUX, 50 to
100 Kbaud". Console connection? If so, what about the serial ports
above? This would count out my laptop right?
Wow, now that's cool. I'll have to look for that one.
What should be the next step in restoring these?
You mean apart from finding some cards for the Nova? Well, what I would do (briefly - I'll give you
more info later when
I'm less tired) is :
1) Check the PSU in the 11/34 CPU. It's probably
fine,
but you don't want to ruin all your boards
How should I check the power supply? I know that many people here
say you should always do this but with the small cheap micros I've
picked up so far I haven't bothered.
2) Get the PDP11 CPU working and talking to a terminal
What I need to determine is what type of terminal. I was thinking of
using my laptop with a VT100 emulator if I can connect up to one of
the serial ports listed below. The system is up at my office since I
don't have room at home at the moment and taking the laptop up there
is easier than digging a terminal out of my storage place.
3) Sort out the RK05 - if it needs it.
4) Hopefully there's some kind of OS on one of those
RK05 packs. Boot it
I hope so too. None of them are labeled. I have some DEC floppy
drives which came with a Tandy Color Computer. Someone interfaced
them to the Coco and used them with OS-9. I have a bunch of Coco
OS-9 disks labeled as RX50 format. Anyway, one set of the drives is
in a dual drive box labeled RX180AB and the other is a Rainbow style
drive mounted in half of a Xerox enclosure. Could these be used on
the -11 and what type of interface should I look for? Seems to me it
would be easier to get software to the machine if I could use the
floppies.
5) Enjoy the machine.
This is the part I'm really looking forward to.
No, there should be a top cover on the RK05. You can
run the drive
without it (e.g. for servicing), but it's best to keep as much dust
off the heads as possible.
That's what I thought. Any idea where to locate a cover for it?
Maybe I can check with the scrapper I picked it up from. I also have
two RK05 drives in storage which came with parts of a couple of
PDP-8s I picked up recently. I may take those up there as well.
11/34 itself.
It has the octal front panel and decaying foam in
front. It also contains the follow boards from left to right looking
towards to back of the system:
From memory, what you have is :
M7257
M7256
M7255
M7254
Those 4 boards are the controller for the RK05. They fit into a
special 4-slot backplane, as does the white ribbon cable from the
RK05. What's in the slot _behind_ the M7257? There should be a
terminator (either an M9302 or an M930) there. M9202
Unibus connector to link the backplanes
H-228B
H-222A
H-222A
Core memory, I think
M7850
Memory parity check board
M9202
Another bus connector
M7856
Serial port/line time clock. You have 2 of these - one is probably
the console port.
M7258
I can't remember. Is there anything written in the copper etch? M7856
Another serial port.
M7814
Again, I've forgotten this one. M7859 (Behind this is a M9301YF)
M7859 is the interface for the octal keypad. Look carefully at this
board - there's an 18 pin chip on it that's often in a gold-topped
package. It's an 8008 CPU.
M9301 contains the boot roms and a trivial machine code monitor (a
version of console-ODT) that lets you edit memory from the console
terminal without using the keypad
Yes it does. Thanks!
M8265
M8266
The CPU. One board is the data path (ALUs, registers, etc), the
other is the control (microcode ROMs + sequencer).
Hope the above helps.
-tony
-----
David Williams - Computer Packrat
dlw(a)neosoft.com
http://www.neosoft.com/~dlw
7 p.m.
New subject: PDP-11/34 & DG Nova-3
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17 Feb
17 Feb
2:58 a.m.
New subject: PDP-11/34 & DG Nova-3
Thanks to everyone that has helpped out so far. Everyone around my
office has been stopping by and asking what I'm doing. When I tell
them they look at me and ask, "Why?" I just ask them, "Why does
someone restore old cars?" Most reply, "Because they are cool." To
which I say, "Exactly."
Anyway, back to the piles of questions.
On 16 Feb 98 at 22:00, Tim Shoppa wrote:
Traced a cable from it to a box with what looks like 8 serial
connectors. Need to take a closer look at it when I get back into
the warehouse, I seem to recall some DEC id on the box.
This one was
listed as a "DZ-11 U 8-line 20ma data MUX, 50 to
100 Kbaud". Console connection?
Not the "operator's console", but user serial ports after the OS
starts up. One of the M7856's is the console port. Look for
one that is
jumpered for a CSR of 777560 - this one is the console.
One of them has a cable coming from it with a 6 pin connector with a
faded hand written label that says console on it. The connector is
unlike any I've seen before. Looks sorta like a larger version of a
drive power connector on my PC. The other runs off to a standard
DB25 serial connector. How can I tell if the board is jumpered
for a CSR of 777560?
Assuming the console port is wired for RS-232, yes.
The port may
also be configured for 20 mA current loop, which your laptop
wouldn't handle without a converter.
I've been hoping that it wouldn't be 20 mA current loop since I first
found the system. RS-232 terminals I have a bunch of.
I was back with the system earlier looking it over and taking some
pictures. (Have to document every step of the way.) Anyway, what are
the power requirments for these? The system and drive are plugged
into a box which seems to have a 220V cable coming out of it but the
plug end has been cut off. Do I need to use this plug box and a 220V
line or can I plug them into the normal lines?
-----
David Williams - Computer Packrat
dlw(a)neosoft.com
http://www.neosoft.com/~dlw
10:03 a.m.
New subject: PDP-11/34 & DG Nova-3
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7:16 a.m.
New subject: PDP-11/34 & DG Nova-3
Thanks Tim. I checked out the ftp reference you gave. Great site,
I've already started browsing through a bunch of it.
On 17 Feb 98 at 13:03, Tim Shoppa wrote:
That connector that you found is almost certainly the
Molex
connector that DEC used for 20 mA current loop connections. On
older machines, 20 mA was the de facto standard for the console
terminal, as the console terminal was traditionally a Teletype of
some sort.
Yes, I've now decided that the console is set for 20 mA. The second
M7856 with that cable seems to be set for both SLU & LTC active set
for console. Transmiter active, receiver active, reader enabled, 110
baud, 8N2. I haven't looked at the switchs for the other board yet.
All DEC VT-220's came equipped for 20mA current
loop, and it was an
option for the VT-100's and VT-52's. It was also quite standard on
the older DECWriters.
Guess I need to locate a DEC terminal. I have some Honeywell Bull
terminals which emulate a VT100 and a Wyse 50 but nothing with a
connector which matches this cable. Am I wrong in reading this doc
on the board where it looks like it can be configured for RS-232?
Can I reset it and use a different cable instead of the 20 mA?
It's possible that you've got a 240V power
controller, but unlikely.
More likely you have a 120V power controller that originally had a
Hubble 25A Twist-N-Lock connector on it. If you post the model
number of the power controller box, I can find the voltage it was
designed for. Usually this is clearly marked on the power
controller.
I've had a little more time to look over the system. The cut cord to
the power box is real thick and the three wires are a good size too
so I thought it was a 220V connection. Looking a little more closely
at the back of the box I see :
861C UA REVL
Input 120V 50-60 HZ
2 Pole 3 Wire 24A
Until then, you'll find that each of the boxes in
the rack has a
rather standard 120V power plug attached. These can be plugged
straight into whatever you find handy until you get your power
controller plug reinstalled. The 11/34A CPU box itself draws less
than 12 Amps.
I'm still finding out things about this system. There is a DEC tag
on the side of the system with the serial number and such labeling it
an 11/34a and dated 16-Dec-77. Not too long after I first started
programing. Back then though I was on HP boxes.
Ok, I need to locate something to use as a console and have the power
supply checked. Then I'll fire her up and see how it goes. After
that I'll begin work on the drive.
-----
David Williams - Computer Packrat
dlw(a)neosoft.com
http://www.neosoft.com/~dlw
1:31 p.m.
New subject: PDP-11/34 & DG Nova-3
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3:05 a.m.
New subject: PDP-11/34 & DG Nova-3
On 17 Feb 98 at 1:49, Tony Duell wrote:
One of these wasn't an M9202 but an M920. What's the difference?
-----
David Williams - Computer Packrat
dlw(a)neosoft.com
http://www.neosoft.com/~dlw
No, there should be a top cover on the RK05. You can
run the drive
without it (e.g. for servicing), but it's best to keep as much dust
off the heads as possible.
I've had time for a closer look at this. The insides are pretty
dusty. I think it has been sitting around without a cover for some
time. One part looks like it had a filter over it but it decayed and
only left a bit around the edge.
Those 4 boards are the controller for the RK05. They
fit into a
special 4-slot backplane, as does the white ribbon cable from the
RK05. What's in the slot _behind_ the M7257? There should be a
terminator (either an M9302 or an M930) there.
I don't see anything behind the M7257. Didn't see anything with a
M9302 or M930 label. Please don't tell me I'm going to have to find
one somewhere. :-(
M9202
Unibus connector to link the backplanes
2:32 p.m.
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16 Feb
16 Feb
10:38 a.m.
New subject: C64 Modem issue
But you know guys, it ain't always that simple! I did the old
chop-chop / solder-solder bit to make an X1541, and I never did get
it to work. The bit-bang foolishness needed to get this to work is
iffy, at best IMHO.
Jeff
Hmmmm, yes there should be. However, as I said I don't think it's in the
current termcap. Probably need to search for old termcaps, and I don't
know where you'll find them, I can't even give you a timeframe. I'm pretty
sure the original ones didn't have an entry, they're the only ones I've
ever bothered to look at. Might ask on comp.sys.cbm
We'll you might be able to find someone that would build one, but why
bother. Just take one of the 1541 cables, cut in half, and solder on a
parallel plug. If you can get a plug that the cable will plug into you can
make an adapter that will let you build this without destroying a cable. I
did a little looking, and here is what I was able to come up with.
ftp://ftp.funet.fi/pub/cbm/transfer/1541-to-PC/index-t.html
http://ludens.elte.hu/~sta/sc.html
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| For Empire of the Petal Throne and Traveller Role Playing, |
| see http://www.dragonfire.net/~healyzh/ |
| For the collecting of Classic Computers with info on them. |
| see http://www.dragonfire.net/~healyzh/museum.html |
what system you would need it for. IIRC it varies a
little from UNIX to
UNIX.
It would be Red Hat linux, and if there's a termcap for the m100, there's
gotta be one for the c64. don't
already have a X1541 cable made, all I can say is get to work. The
Do you know if anyone makes these cables and sells them? Or, barring that,
any specific links to the assembly instructions?
9678
days inactive
9686
days old
23 comments
9 participants
participants (9)
-
ard＠p850ug1.demon.co.uk -
dastar＠wco.com -
dlw＠neosoft.com -
engine＠chac.org -
healyzh＠ix.netcom.com -
higginbo＠netpath.net -
Jeff.Kaneko＠ifrsys.com -
lwalker＠mail.interlog.com -
shoppa＠alph02.triumf.ca