On Mar 30, 22:30, Olminkhof wrote:
> 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 first address is in RAM, which is interesting. It suggests the
processor is executing some bootstrap that gets copied into memory. 173000
is the standard bootstrap address; every time you restart the CPU, it sets
the program counter to that address. The "&" is not any normal PDP-11
prompt, so that must have come from the disk or custom boot roms.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
On Mar 30, 19:25, Philip.Belben(a)powertech.co.uk wrote:
> This is only on topic at all because I shall be using a classic computer
for
> it...
>
> I understand that some mobile telephones nowadays can download tunes to
play
> when they ring. Can anybody point me to (a) the download protocol(s)
that the
> phones use and (b) the file format(s) for these tunes?
Yes, several Nokia, Ericsson, and Siemens models can download tunes, and a
few can be programmed in other ways with a data cable. One place to start
might be
http://www.cellulartips.com/index.html
but there are lots of other sites around. You'll find a lot of information
by using AltaVista, or DejaNews to search the uk.telecom newgroups as well
(look for "nokia" and "data"), eg
http://www.gadgets.demon.co.uk/nokia61xx/
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
This is only on topic at all because I shall be using a classic computer for
it...
I understand that some mobile telephones nowadays can download tunes to play
when they ring. Can anybody point me to (a) the download protocol(s) that the
phones use and (b) the file format(s) for these tunes?
Philip.
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> realise there was an analogue I/O card for the 380Z. I've got no
> info on the winchester and network cards, but I guessed they must
> have existed. IIRC at least one of the RML winchester systems was a
> box about the size of a 380Z with a PSU, ST506-interfaced drive and
> a SASI-ST506 interface card. I assume the 380Z interface was a SASI
> host adapter or something.
The 3rd. party winchester disk unit measures 16" x 16" x 4.5" and the
cover (top and sides) is a beige type plastic with rounded corners
(radius about 1") on the top of the sides; sitting on a metal base/
font/back. It has the wiring for two 5.25" FH disk drives but contains
only one Rodime RO 100 (4 platters/8 heads/192 cylinders). The
interface card in the disk unit is a 'Konan David Jr. II'. As I
mentioned this has never worked. The instructions for running up
the hard disk (given verbally to me) was to insert the floppy
containing the executable x and to type x - Found the floppy,
typed the command - nothing, although the disk does whirr quite
happily, it doesn't seek.
> I'd always assumed that the IEEE-488 card was a card that connected
> to the bus cable. Are you saying that it's a daughterboard that
> fits under the Z80 or something?
The 3.5" square (exactly) daughter board plugs directly into and
only into where the Z80 CPU normally resides. The board contains:
Z80 CPU, AM25LS252IPC, 2 x SN74LS245N, SN74LS00N, 74F32PC chips
with assorted resistors etc. There is a 26 way berg connector to
take the cable to the IEEE-488 port. Also there is a 8-way link
box with 5 unbroken links, 2 broken links and 1 remade link.
> Do you happen to have schematics other than the ones that appear in
> the normal Information File.
Sorry, no schematics
Doug.
Since alt.sys.pdp10 is in a big flamewar right now, I guess I'll ask here.
Does anyone know the correct geomerty of an RP04 pack in 18-bit mode?
I have it as 19 heads, 411 cylinders, and 20 sectors a track, with 260
word sectors. (18 bit words, 256 data words and 4 header words.)
I think that's wrong though.
-------
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
>
