>
> I made the same experience when I performed a "DEC-format-marathon" with ten
> ST-225 drives which were neither DEC-labeled nor where DEC-formatted before.
> Most of my disk drives where successfully formatted after having entered the
> drive parameters for the "TEST 70" procedure, but in case of some drives,
> the procedure was aborted. These drives where not successfully recognised
> as RD31 and no format was performed by my microVAX-2000 in these cases.
> What I found out is that the drives which were not recognised as RD31's were
> drives with some bad blocks detected when formatted with a PC.
> Can anybody else comment on or has made that experience?
>
I successfully formatted several oddball non-DEC-branded drives rescued from
a skip (dumpster) using a VS2000. It was a long time ago and I don't remember
the details but I suspect some at least had a list of bad blocks on the label.
I seem to recall that I did not have any way of knowing what the correct
parameters were and I found some by extrapolating from the example in the manual
and by trial and error. I agree with the general view that they should be
jumpered as DS3 for the internal drive.
I eventually made a new drive cable so that I could have a "hot swappable"
disk outside the case. This worked great until I came upon one particular drive
which, when I pushed the connectors onto it, the VS2000 PSU promptly switched
itself off. I was somewhat puzzled as I was using an external PSU for the disk
and could not have been overloading the VS2000 PSU or so I thought. I pulled
off the connectors, power cycled the machine and tried connecting the drive
again and the same thing happened. Not to be defeated, I tried connecting all
the cables up and then powering up the VS2000. This time the PSU tried harder,
the machine powered up and one of the wires in the data cable turned itself into
a heating element, melted and nearly set fire to its insulation. It seems that
one of the wires in the data lead to the external drive has a not very well
protected +5V on it and at least one drive variant shorts this to ground...
Regards,
Peter Coghlan.
On 31 December 2012 04:27, Zane H. Healy <healyzh at aracnet.com> wrote:
> Now that is seriously interesting! I knew there was a reason I was keeping
> up with this thread!
Thanks! [*Chuffed*]
I ought to have given due credit to another of the Giant Brains behind
FreeGEM, John Elliott, who is also on the list now, too. John is a
hero and a major force in PC-GEM, CP/M and Amstrad-related
development, emulation and various other areas, too.
--
Liam Proven ? Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 ? Cell: +44 7939-087884
On 2013-01-01 19:00, "Rob Jarratt"<robert.jarratt at ntlworld.com> wrote:
>> >-----Original Message-----
>> >From:cctalk-bounces at classiccmp.org [mailto:cctalk-
>> >bounces at classiccmp.org] On Behalf Of allison
>> >Sent: 01 January 2013 03:06
>> >To: General Discussion: On-Topic Posts Only
>> >Subject: Re: What PDP11 OS in 20MB Disk Space
>> >
>> >On 12/31/2012 04:25 PM, Dave McGuire wrote:
>>> > > Straight 11M (non-plus) does. (fits in 10 actually) Early RSTS/E,
> like v8,
>> >should, but not 10 and likely not 9. RT11 does.
>>> > >
>>> > > -Dave
>>> > >
>> >I have RSTS on RL02 so it must fit on 10mb!
>> >
>> >RT11 fits on anything, the whole build kit is two RL02s (boot and kits)
>> >
>> >I know of none that do not fit. RSTS and RSX are big and might have to be
>> >trimmed
>> >a little or some optional part left off.
>
> I am not sure how you would do that. I am following these instructions:
> http://9track.net/pdp11/rsx4_sysgen.
>
> The trouble is that after restoring the RSX-11M+ 4.2 tape, when I reboot
> from the disk it gives repeated disk allocation errors, presumably through
> lack of space. Is there a step that needs to be added when first restoring
> the tape to the hard disk?
Not sure what errors you are seeing, but it sounds weird.
Anyway, the normal way to run M+ from an RL02 was/is to use the
pregenned system for an RL02, which has all the necessary bits stuffed
in, and everything set up. Ready to go.
Generating your own system for running on an RL02 takes some careful
consideration...
Johnny
I have a packet of five BallWriter pens, part number 40C1 06-9 (is 06-9
the date code?) if any one has a use for them they are theirs for the
postage, but as I am in the UK it might be a few dollars.
--
Dave Wade G4UGM
Illegitimi Non Carborundum
Hi!
Good news! A new batch of N8VEM SBC V2 PCBs have arrived!
In addition I just received an email from the PCB manufacturer that the
N8VEM ECB backplane PCBs have been shipped.
They should be here in a couple of days. I am guessing later this week.
Here are some instructions on how to build the N8VEM SBC V2 for the total
beginner but are useful for most any builder
http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder
<http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=Building%20the
%20N8VEM%20for%20the%20Total%20Beginner>
¶m=Building%20the%20N8VEM%20for%20the%20Total%20Beginner
The N8VEM SBC V2 and ECB backplane are $20 each plus $2 shipping in the US
and $5 elsewhere.
Thanks and have a happy new year!
Andrew Lynch
Hi all,
I'm cleaning up the overflowing attic. Most of it will probably be rather painfully expensive to ship, so I guess it might be more for the Dutch people on this list. Some items could be shipped abroad, though.
Contact me off-list for details.
All prices listed below are exclusive of shipping costs.
Book:
UNIX Programming Environment soft cover, 15 EURO
USB KVM:
Sweex USB and Audio KVM switch for two machines, 10 EURO
PCs:
AMD XP 1900+ with Radeon x850x, 50 EURO
Compaq/HP D51s EVO, 25 EURO
Fujitsu/Siemens p300 with AHA2940 and 20GB DAT, 25 EURO
Apple:
PowerMac G4 AGP with white Apple keyboard, 25 EURO
SGI:
Indy with Indycam, original keyboard/mouse and SGI 20" CRT, 25 EURO
Sun:
GDM5410 21" Flat Trinitron CRT, 10 EURO
Ultra 5 333MHz/400MB, 15 EURO
Ultra 10 440MHz/768MB, 25 EURO
regards,
reiche
A New Year's look at another one of my classic rest home residents -
that triumph of British minimalism, the Sinclair ZX81.
http://youtu.be/YcE_HqCOTf4
Terry (Tez)
I introduced an error in a recent change to the scripts that generate
bitsavers RSS feeds for PDF and bits.
The symptoms were that the URLs for intermediate directories were
incorrect and the category for files was incorrect.
I believe I have corrected those errors and the scripts should be
working properly again.
--
"The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline>
The Computer Graphics Museum <http://computergraphicsmuseum.org>
The Terminals Wiki <http://terminals.classiccmp.org>
Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>
