>Date: Tue, 5 Jun 2007 02:32:54 +0100
>From: "Rod Smallwood" <RodSmallwood at mail.ediconsulting.co.uk>
> Subject: RE: Repairing the damage.
> To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.
org>
>
...
>I probably failed to make my self clear.
>
> 1. Yes MOP is part of a whole heap of programs that go to
> make up DECNET
>
> 2. MOP stands for Maintenance Operations Protocol and that
> what is was for.
>
> 3 It pre dates DECnet (Well at lest internally in DEC)
MOP is part of the DECnet architecture set, and like DECnet has gone
through a number of versions, and releases. It actually underwent a
boom in the later years, as Ethernet got cheap and diskless network
devices became attractive.
It is a simple lower level datagram protocol, and does not need the
normal session stack to run. In smarter network devices, a MOP
bootstrap can be in the device ROM.
All that said; architecture, implementation, and deployment vary with
platforms and time.
For those that grew up on TCP/IP only (and thus doomed to repeat the
past), it is best to think of MOP as the DECnet analog of BOOTP, with a
little bit of DHCP and ARP sprinkled in.
...
> 8. Its twenty-five years since I was a product manager in
> DEC SWS. No wonder I'm a bit hazy on this stuff!
>
> Regards
> Rod Smallwood
There's your problem. I was a software engineer for DECnet-RSX,
DECnet-PRO, DECnet-DOS, and PATHWorks. I was also the architect of the
DAP Protocol v6 and a DECnet Token Ring Datalink. The later included
MOP specfications too.
I still have copies of all the Phase IV era DNA specs.
Dave.
> > Hi,
> >
> > >> Changing the subject slightly, IIRC the original "Acorn 6502
> > >>Second Processor" cheese-wedge was just that, a faster 6502?
> > >
> > > Actualy, it's a 3MHz 65C02.
> >
> > Ah, thanks for that....it's been a few years since I had the lid off mine.
> >
> >
> > >>....problems (in fact, total failure IIRC?) when I tried running
> > >>a 65c02 in a Model B sometime in the early 90's?
> > >
> I too recently tried that, with three new 65c02's. The BBC would have
> none of it : it only booted with the NMOS 6502
>
> Jos
IIRC this was caused by a slight timing difference of the Phi2 signal.
This could be solved by placing two 220pF ceramic capacitors over pins
7 and 11 of IC29 and IC37. This would fix the Beeb's booting problem, but
unfortunately this would create a DRAM timing problem for Solidisk's
96k Sideways RAM expansion for the 32k SWR board. Took me (literally)
years to figure that out!
One of my 'when-i-have-time' things is experimenting with the capacitor's
value to see if I can find the right value :-)
Cheers,
Eelco
did DEC (or a
third party) ever produce a reference listing of DEC "parts codes" against
function (e.g. RK05 = removable disk, KL11 = serial interface etc.)
--
Yes, the 'edited' and 'unedited' options/modules list(s)
The April 1983 edited document can be found at
http://bitsavers.org/pdf/dec/modules/modulesAndOptions/
There are separate catalogs for documentation, since they changed more often
with software releases.
The story so far:
VAX 4000-200 x1
VAX 4000-300 x1
PDP11/94 x4 No CPU cards
SA600 (4 x RA92) x1
SA600 (2 x RA92) x1
VT420 x3
VT320 x1
VT330 x1
LA75 x3
Of these, plus other (Non-Dec kit) for sale or swap
(All funds to save other old DEC kit)
PDP 11/94 (No cpu cards) x2
VT 420 x2
LA75 x2
HP 700 Terminal x1
HP 2392A Terminal x1
Shiva LAN Rover x1
Victor PC in pristine condx. X1
SA600 (2 x RA92) x1
Wish list
PDP-8/E
KDJ11-BF (M8190-AE) x 4 Replacements for the missing 11/94 CPU
MSV11-JE x 4 " " 11/94 Memory
VT05
VT100
VT220
LA36
LA180
DELNI
DECSA
Rainbow
Anything else with a DEC label I can lift and and will fit into the
car.
Objectives
Working Examples of PDP8 , PDP11, and VAX systems.
DECNet Network to connect the above.
Working Examples of VT100, VT200, VT300, VT400, and VT500 series
terminals
Decserver 200 connecting the above to the network
Working Examples of LA series terminals/printers
Rod Smallwood
I have mentioned this system on this list a couple times before. The
IMS 5000 IS is a S-100 based multiprocessor system running turbodos 1.3
(an extended multiprocessing CP/M clone). It is a very well built
machine, clearly intended for office use.
It has a single DSDD 96 tpi 5.25" floppy and a 10 MB hard disk (rodime
ro 200). It boots off the hard drive, and couple months ago I spent
some time and cracked the login/password file. The floppy disk appears
to work (I can "dir" and get files off a floppy created on a PC using
the teledisk program).
The system doesn't have much on it in the way of development software,
just some custom apps written for the dentist's office this came out of.
As it is a CP/M system, though, you can use standard CP/M programs on it.
The master system has a 8085-based intelligent terminal card, plus a
master Z80 CPU and two slave Z80 CPUs. Each cpu has 64 KB of parity
checked DRAM.
I tried plugging in the slave to the master but I suspect things are not
cabled right, as the slave terminal acts as if it is wired in parallel
to the master terminal.
I'd like to find a new home for this system. I simply don't have enough
time to mess with it, and I don't have enough interest to make the time.
Here are some a few cruddy pictures:
http://home.pacbell.net/frustum/ims5000/
The only problem is that the local/remote key on the slave terminal
keyboard is broken off (before I received it). The key still works; you
can depress the stub of the plunger that is left, but luckily it is a
key that normally doesn't need to be used.
This system would be shipped from austin, tx 78737 at your expense. I
recommend fedex ground, as it seems to be the least expensive of the
majors for heavy items like this. It would be two boxes. I haven't
weighed them, but I would guess 50 lbs and 30 lbs. They were shipped to
me in their original boxes, and I'd ship them to you the same way. This
means that there is a custom foam shell for each unit, but it also means
that the original boxes are somewhat tattered and one has been
reinforced, so don't wail that I've ruined everything by harming the
original boxes.
I'll give preference to anybody willing to come and pick them up, soon.
Hi
Boot, well sort of. Its down loading a file from a boot server using
BOOT EZA0 (The ethernet port).
That it does OK and on the boot server it says download OK.
However it does not run the downloaded file. I may have the wrong one.
Rod
-----Original Message-----
From: cctech-bounces at classiccmp.org
[mailto:cctech-bounces at classiccmp.org] On Behalf Of Antonio Carlini
Sent: 05 June 2007 22:54
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: RE: New DEC problem
Rod Smallwood wrote:
> After selecting the language it counts down to 10 and then fails test
> C5.
>
> Does anybody know what test C5 tests.
> If its an unterminated DSSI bus thats OK anything else could be a
> problem.
When I had a KZQSA in a VAX 4000-500 I found that it would fail
self-test if either port was left unterminated. I would not be surprised
if an unterminated DSSI port had the same effect.
Does it still boot if you make it boot manually (i.e. is the error fatal
or does it just interfere with automatic booting?)
Antonio
Well the DELNI can come off the list and from using a Chase IOLAN box
as terminal server.
I now have enough Decserver 200's to connect every type of serial
device DEC ever made.
They were going for a song so I gave them my version of "My Way" and
got them very cheap!!
Rod Smallwood
