Re: IDE knowledge anyone?

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

Looking for AS/400

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

Re: Appraisal for Donation (Pontus Pihlgren)

> > 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

Pair of PDP-11/04's available

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

Re: TU-58

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.

Re: TU-58

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

Re: TU-58

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

80186 multi buss system problem

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.

Re: TU-58

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

Re: IDE knowledge anyone?

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

Re: IDE knowledge anyone?

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

Re: Evotek Winchester Harddisk

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

Re: IDE knowledge anyone?

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

SCSI Questions (Was: "Re: Purchased a Microvax 3800")

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 >

RE: Evotek Winchester Harddisk

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

Re: SCSI Questions (Was: "Re: Purchased a Microvax 3800")

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

Re: SCSI Questions (Was: "Re: Purchased a Microvax 3800")

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

Re: Evotek Winchester Harddisk

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

Re: SCSI Questions (Was: "Re: Purchased a Microvax 3800")

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

Re: SCSI Questions (Was: "Re: Purchased a Microvax 3800")

> 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

Re: IDE knowledge anyone?

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

Re: IDE knowledge anyone?

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

New release of FreePascal

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 -

RE: Appraisal for Donation

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:

Re: Evotek Winchester Harddisk

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.

Re: IDE knowledge anyone?

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