My entire collection was purchased by a *very* large corporation. Details
will probably be PR'd later this month. I have a lot of source code and
PDP-1 software that does not exist anywhere. I would like to back up this
material in case of damage in shipping, and it should be made available to
all.
I am spending all my time right now packing and rackmounting - I have no
time to write anything. I will have some people come over and feed in the
paper tape this weekend. While I won't be able to archive most of it, I do
hope to at least read in most of the source code on paper tape. (I have over
310 PDP-1 paper tapes alone).
This program needs to be *very* easy to use and hopefully supports
X/Y-MODEM. I will set up a terminal program at this end that supports 32
character file names (windows 98). This program would have to run under
RT11-V3B, or RT11V4 BL. Hopefully it would send the code down a serial line
separate serial port.
I will only have this software here until Wednesday April 5,2000 (5 days).
It would be really nice if this software just asked the end user to load a
paper tape, then huit return, and it sends the data read out a separate
serial port, then prompts to load the next one.
Please e-mail me at: dylanb(a)sympatico.ca .
P.S. Most wishlist items were set aside before this offer to purchase so I
will be able to ship them soon.
P.P.S I bought a DSI to do this but it got seriously damaged in shipping - I
have no time to fix it.
john
Thanks to all for the advice so far.
I now have the terminal connection working again at least.
>
>Try connecting directly to the 10-pin connector on the left side of the
>MXV11, start it up, and hit the HALT button. You should get an address and
>an ODT prompt. You should get another prompt every time you press RUN, if
>HALT is still pressed in. Assuming the panel is connected to the backplane
>correctly.
>
I do this and get:
147470
@
Further iterations all result in:
173000
@
If I hit restart at any time after that there is a some disk activity and
eventually and "&" prompt appears. The keyboard doesn't respond and nothing
seems to happen in a reasonable time after that.
I consulted the original owner who reports that it definitely went through a
self test routine on the screen and did this before the linked PDP8 was
started, so there's a hardware problem somewhere.
Anyway I'm streets ahead with the info from Aaron Finneys scans which I will
now study. I plan to reseat all the roms and cards and check all the jumper
settings.
Thanks all,
Hans
Hi,
Just a quick note to let everyone know that I (somehow) managed to add a
few more docs to my page at http://www.retrobytes.org.
Since my last announcement, I've added an HP section (sparse yet), some
more RT-11 docs, some MicroPDP docs, an SWP section, etc...
Cheers,
Aaron
On Mar 28, 12:38, Dwight Elvey wrote:
> It is OK to call the 'ok' the open-boot prompt.
I knew it had a proper name, but I didn't remember until later. Some of us
still regularly call it "the new prompt" :-)
> Forth is the hardware
> persons secret tool, don't tell software types, they won't understand.
Oh, I don't know. I've got software written in Forth, such as my PAL
assembler. Though come to think of it, that's not really a software type's
thing, is it.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Well . . . after another few more hours of exploration :
The M8059 YA card wasn't that at all. It is actually an M8639 YA.
I need glasses . . and stronger light.
Anyway, Control C doesn't work and I can no longer repeat getting to an @
prompt, instead getting a lot of backward ? characters at times.
I'm now using the console port but have lost confidence in the terminal and
serial cable completely. I discovered the baud setting control for the ports
after I blew the dust out of the little window. Set the port to 4800 baud,
the default setting on the VT220. All for no consistent result. Tried 110
baud on both with no result
I switched to a straight though 25 wire serial cable and got absolutely no
communication, . . added a null modem and got a little garbage . . changed
>from the default VT200 mode 7 bit controls to some of the others . . . all
to no result.
I think the PDP is booting OK judging by the sounds it makes but there is
nothing on the terminal screen. The terminal seems to do everything OK when
in local mode.
I have another VT220 tucked away. Trying that is all I can think of at this
point. I should see something on the screen even if the hard drive or OS
have a problem shouldn't I?
Is there a PDP11's for Dummies book?
Hans
-----Original Message-----
From: Pete Turnbull <pete(a)dunnington.u-net.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Wednesday, 29 March 2000 17:45
Subject: Re: PDP11/23 More dumb questions
>On Mar 28, 15:25, CLASSICCMP(a)trailing-edge.com wrote:
>> >> >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!
>
>Ah, that's the magic part :-)
>
>--
>
>Pete Peter Turnbull
> Dept. of Computer Science
> University of York
>
--- Aaron Christopher Finney <af-list(a)wfi-inc.com> wrote:
> No extra cable...but I do have the RS422 standard pinout handy...
I've got the pinout of the camera from the Apple tech support web site.
What I was confused about is what signals get wired to what signals for
RS-422. I've been making RS-232 cables for 10 years, but without a cable
diagram, I've never made a Mac cable.
>
> On Sun, 12 Mar 2000, Ethan Dicks wrote:
>
> > So... does anyone out there have a Mac "null-modem" cable they'd like to
> > get rid of?
I've also found out that this *exact* cable (down to the icon) is used to
connect a Newton to a Mac. Any Newt users out there (in the States, Hans ;-)
that have a source for cables?
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
Hello, fellow scroungers,
After having formatted my system drive in error, I am putting back in my
tape backup unit.
I have gobs of 150 meg and 250 meg tapes, but am in need of 525 meg tapes
----------- DC6525 ---------
for less that retail price (which at last report was $20-30 a pop).
I would appreciate any leads . . . .
Gary Hildebrand
I have been using a Zax in-circuit debugger and it has recently stopped
working. As best as I can tell, the Zax corporation is no longer in
existence. I'd like to either have my unit repaired or find a
replacement. Any help out there?
klager(a)execpc.com
>Are you using a 1.2MB floppy drive to write a 360K floppy disk?
Yes, but I used the drive (1.2Mb) to format it to 360K.
____________________________________________________________
David Vohs, Digital Archaeologist & Computer Historian.
Computer Collection:
"Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, Okimate 20.
"Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II.
"Delorean": TI-99/4A.
"Monolith": Apple Macintosh Portable.
"Spectrum": Tandy Color Computer 3.
"Boombox": Sharp PC-7000.
____________________________________________________________
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
On Mar 30, 0:17, Olminkhof wrote:
> Anyway, Control C doesn't work and I can no longer repeat getting to an
@
> prompt, instead getting a lot of backward ? characters at times.
> I'm now using the console port but have lost confidence in the terminal
and
> serial cable completely. I discovered the baud setting control for the
ports
> after I blew the dust out of the little window. Set the port to 4800
baud,
> the default setting on the VT220. All for no consistent result. Tried 110
> baud on both with no result
If the system is using the SLUs on the MXV11-B, the little window is
meaningless, as the baud rate etc on the MXV11 has to be set by rejumpering
several links, often with wire wrap. There's no handy way of connecting a
selector switch.
> I switched to a straight though 25 wire serial cable and got absolutely
no
> communication, . . added a null modem and got a little garbage . .
changed
> from the default VT200 mode 7 bit controls to some of the others . . .
all
> to no result.
Try connecting directly to the 10-pin connector on the left side of the
MXV11, start it up, and hit the HALT button. You should get an address and
an ODT prompt. You should get another prompt every time you press RUN, if
HALT is still pressed in. Assuming the panel is connected to the backplane
correctly.
The MXV11-B only supports 300/1200/9600/38400 baud. J9,J10,J11 control the
setting for SLU0, J7,J8,J9 control SLU1 (the console port). 9600 is J9 to
J10, and J8 to J9. J61 to J62 forces SLU1 to be the console.
It's also possible that you have some kind of custom bootstrap in it.
MXV11-Bs were sometimes sold without boot ROMs (the standrd ROM set is
known as the B2 ROM set, and marked as such), and use the same software
arrangement as the MRV11-D ROM board, so people were able to roll their own
using information in the MRV11-D manual.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
