its working ok now. Its hung off of an old notebook on a serial port.
NB has dos 6.2 and some drivers I found on spare time gizmos site
I discovered by chance that the rubber compression sleeve from an NType
RF connector
is exactly the right size and when cut in half fixes both drive wheels.
I
Hi,
I’m looking for some help diagnosing a old Grid server problem,I am a hobbyist
learning my way around old computer systems .
The system consists of three boards labeled
Diagnostic server
File server
Com server
Each board contains a 80186 , ram and rom and are all connected via a backplane.
T
On 06/12/2015 17:27, Jerome H. Fine wrote:
In addition, even before that, you must match the CSR and
VECTOR with the DL port you are using. On a Qbus
system with a DLV11-J, usually the first DL port is:
SET DD CSR=176500
SET DD VECTOR=300
On a PDP-11/23, there is an extra port at:
SET DD
On 2015-12-07 10:24, Pete Turnbull wrote:
On 06/12/2015 17:27, Jerome H. Fine wrote:
In addition, even before that, you must match the CSR and
VECTOR with the DL port you are using. On a Qbus
system with a DLV11-J, usually the first DL port is:
SET DD CSR=176500
SET DD VECTOR=300
On a PDP
Try sector count=1
Joe
> On Dec 6, 2015, at 3:57 PM, Oliver Lehmann wrote:
>
> Hi,
>
> I've built a Harddisk-Controller-Emulator for my system which accesses
> a IDE (PATA) harddisk with an ATMega in PIO mode. It works like a charm
> except for one WD harddisk. The harddisk itself works fine w
OK as you surmised its destined for 'eleven_heaven' my row of q-bus
pdp11's 11/23 11/53 11/73.
I I also have two 11/94's (Hybrid bus) waiting on the day KDJ11-E's
don't cost $2000.
DLV-11J I have or what ever the four port one is called.
Plus backplate with four 25way D connectors and split r
Joseph Lang wrote:
Try sector count=1
Good eyes! :)
Unfortunally it was just a type I made in the mail.
Sector count is of course 1.
Regards, Oliver
Tom Gardner wrote:
The Evotek drive initially used the notoriously unreliable Ampex
Alar plated media; whether they ever upgraded to sputtered media is
uncertain. It probably should be avoided.
I would look for an replacement drive using oxide media. The nice
thing about oxide media i
So I've been informed that a pair of PDP-11/04's are available, Chicago US
area. The price isn't set - someone else has offered the owner ~$400, which
seems a bit low to me (although I don't know what peripherals/memory are
included, if any). One is in a 5" box, and one in an 11"; both apparently
i
On 12/7/15 3:54 AM, Oliver Lehmann wrote:
And - I found nothing "compatible" so far to replace them with other
harddisks.
It looks similar to the SA1000 interface. Memorex 112/Fujitsu 2301?
Fujitsu drives were used in Morrow 8" disk units.
Here's a couple of professional appraisers who know computers:
Christopher Morgan Consulting
587 Tremont Street
Boston, MA 02118
AND
Jeremy Norman
HistoryofScience.com
HistoryofInformation.com
BookHistory.net
Jeremy Norman & Co., Inc.
Mail: P.O. Box 867
Novato, CA 94948
UPS, FedEx, DHL:
9
Hi,
OK, i tried now to set Drive/Head first before I set all the other
registers. No success.
I then added a 10ms delay after the data is set for each register,
disable /WR and then wait another 10ms before I execute the next
register.
I also added status checks after each register setting. It st
On 6 December 2015 at 13:24, Mark G. Thomas wrote:
> As much as I love old CPUs, I've lost my patience with hard disk drives.
> I've been using AztecMonster (search ebay) CF-SCSI adapters, with several-GB
> CF cards instead of spinning disks. The KA660 and several PDP-11/83s
> here run reliably fr
Sorry If I didn't make myself clear, I am suggesting one never acquire an
Evotek drive today other than perhaps as an historical curiosity.
The Finch was a short lived 8-inch HDD that went up to 42 MB unformatted BUT
according to Disk/Trend It did not use an ST506 interface but instead came w
On 2015-12-07 20:25, Christian Gauger-Cosgrove wrote:
On 6 December 2015 at 13:24, Mark G. Thomas wrote:
As much as I love old CPUs, I've lost my patience with hard disk drives.
I've been using AztecMonster (search ebay) CF-SCSI adapters, with several-GB
CF cards instead of spinning disks. The
On 7 December 2015 at 14:29, Johnny Billquist wrote:
> I think all (modern PDP-11) OSes can install from TMSCP tapes. RSTS/E is
> more picky than some others, though, if I remember right...
>
Yes, RSTS/E installs from TMSCP just fine (as can RSX-11/M+); I know
that in simh you can bring up Ultrix-
Tom Gardner wrote:
Sorry If I didn't make myself clear, I am suggesting one never
acquire an Evotek drive today other than perhaps as an historical
curiosity.
The Finch was a short lived 8-inch HDD that went up to 42 MB
unformatted BUT according to Disk/Trend It did not use an ST506
On 2015-12-07 20:36, Christian Gauger-Cosgrove wrote:
On 7 December 2015 at 14:29, Johnny Billquist wrote:
I think all (modern PDP-11) OSes can install from TMSCP tapes. RSTS/E is
more picky than some others, though, if I remember right...
Yes, RSTS/E installs from TMSCP just fine (as can RSX
> On Dec 7, 2015, at 2:56 PM, Johnny Billquist wrote:
>
> On 2015-12-07 20:36, Christian Gauger-Cosgrove wrote:
>> On 7 December 2015 at 14:29, Johnny Billquist wrote:
>>> I think all (modern PDP-11) OSes can install from TMSCP tapes. RSTS/E is
>>> more picky than some others, though, if I reme
And regarding timing... even this drive works without any problem:
=== P8000 WDC Emulator 0.93 ===
INFO: PATA init start
INFO: PATA disk has been found
INFO: Number of logical cylinders: 1001
INFO: Number of logical heads: 15
INFO: Number of logical sectors per logical track: 34
INFO: Serial numb
On 12/7/15 6:52 AM, Oliver Lehmann wrote:
I don't have much to offer, but I have done PIO IDE accesses on lots of
cpu's, including small ARM cpu's. I would put the code into a "read
loop" and "write loop" and look at the signals with a scope. Make sure
they look good - i.e. clean edges and th
So I just saw this commit go by on the FreeBSD ports mailing list.
Since some people were talking about Pascal a month or two ago, I
thought it might be of interest to them.
I'm sure commits to various Linux systems will be done as well.
fwiw, I removed the 1460+ lines of diff :-)
mcl
- For
On Mon, Dec 7, 2015 at 4:35 PM, Brad Parker wrote:
> On 12/7/15 6:52 AM, Oliver Lehmann wrote:
>
> I don't have much to offer, but I have done PIO IDE accesses on lots of
> cpu's, including small ARM cpu's. I would put the code into a "read loop"
> and "write loop" and look at the signals with a
Hi there,
Recently, I've been reading up into AS/400s.. They seem like really neat
machines, and look really sharp with those matching block terminals.
I remember retail stores using those, and I always wondered what kind of a
system they were running on... I figured it was DOS!
I've been havin
>
> Date: Sun, 6 Dec 2015 16:47:51 +0100
> From: Pontus Pihlgren
> Subject: Re: Appraisal for Donation
>
> I'm not sure what you are asking. But a PDP-12 sold north of
> 15k dollars:
>
> http://www.ebay.com/itm/161199469414
>
> /P
>
Thanks! I remembered that one selling, but I couldn't remember w
Hi Warner, hi Brad,
I have an old russian 50MHz dual-beam osciloscope but without
any storage functionality. -> http://files.pofo.de/P1070427.JPG
I guess it would not be that easy to actually display the whole
communication cylce. I could see how good the flanks are, but I guess
my AVR does it qu
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