RE: ICL PERQ 2 T2 Micropolis 1303 spinning down.

> -Original Message- > From: cctech On Behalf Of Mattis Lind via > cctech > Sent: 05 January 2021 17:52 > To: David Gesswein ; General Discussion: On-Topic > Posts > Subject: Re: ICL PERQ 2 T2 Micropolis 1303 spinning down. > > Den lör 2 jan. 2021 kl 19:34 skrev David Gesswein via

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

On Wed, Jan 06, 2021 at 12:57:42AM +0100, Patrik Schindler via cctalk wrote: > Hello Tomasz, Ahoy, > Am 05.01.2021 um 22:45 schrieb Tomasz Rola via cctalk : > > > I guess it is more complicated to check mainframe's correct operation. > > If you’re new to the platform, I agree. :-) To be

RE: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Yeh, I know for a fact you cannot setup Hdds for an as/400 unless with the ibm factory tool. ( saw people using AS for a lot of years professionally discuss this ) You had an as400, you had to buy the spares hdds sold by ibm and ibm only About the panel ... let me see... Press 1 time "arrow

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Hello Tomasz, Am 05.01.2021 um 22:45 schrieb Tomasz Rola via cctalk : > I guess it is more complicated to check mainframe's correct operation. If you’re new to the platform, I agree. :-) Hint: If you say mainframe to an AS/400 and a mainframe guy is nearby, duck and cover. ;-) AS/400s were

Re: KL11 asynchronous serial line interface on eBay

On Tue, Jan 5, 2021 at 6:41 PM Chris Zach via cctalk wrote: > I could not think of a reason to pick it up. So I didn't. I feel good > about this. I have a PDP-11/20 but this item was sold before I spotted the e-mail. -ethan

Re: KL11 asynchronous serial line interface on eBay

I could not think of a reason to pick it up. So I didn't. I feel good about this. C On 1/5/2021 6:24 PM, Doug Jackson via cctalk wrote: Well, That went quickly. Kindest regards, Doug Jackson em: d...@doughq.com ph: 0414 986878 Check out my awesome clocks at www.dougswordclocks.com

Re: KL11 asynchronous serial line interface on eBay

Well, That went quickly. Kindest regards, Doug Jackson em: d...@doughq.com ph: 0414 986878 Check out my awesome clocks at www.dougswordclocks.com Follow my amateur radio adventures at vk1zdj.net --- Just like an old fashioned letter,

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Hello, Am 05.01.2021 um 23:33 schrieb mazzinia--- via cctalk : > The hard disks are factory initialized with a specific number of sectors... > they are scsi, and you cannot use normal scsi disks there. Yap. See here for details (and further reading).

RE: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

These things are tanks, sort of... so technically troubles tend to be relative. The hard disks are factory initialized with a specific number of sectors... they are scsi, and you cannot use normal scsi disks there. Also you must not reformat these hdd elsewhere, or you end messing them up... the

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

On Tue, Jan 05, 2021 at 10:02:02PM +0100, mazzi...@tin.it wrote: > Well, > > The whole translation is more on the lines that it hasn't been > started since 3 years and they can't be bothered to check if it > still works with the mains not plugged since then. Thus the risk to > turn it on is on

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Hello, Am 05.01.2021 um 22:02 schrieb mazzinia--- via cctalk : > The whole translation is more on the lines that it hasn't been started since > 3 years and they can't be bothered to check if it still works with the mains > not plugged since then. Thus the risk to turn it on is on the buyer. I

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

On 2021-01-05 5:02 p.m., Patrik Schindler via cctalk wrote: Hello Tomasz, Am 05.01.2021 um 21:53 schrieb Tomasz Rola via cctalk : It says "Als Ersatzteil / defekt", which to my nose smells like "parts donor". Whoever would like to pick it, should verify this. I might be wrong. It’s

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Hello Tomasz, Am 05.01.2021 um 21:53 schrieb Tomasz Rola via cctalk : > It says "Als Ersatzteil / defekt", which to my nose smells like "parts > donor". Whoever would like to pick it, should verify this. I might be > wrong. It’s advertised as that because it’s „three years ago since the last

RE: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Well, The whole translation is more on the lines that it hasn't been started since 3 years and they can't be bothered to check if it still works with the mains not plugged since then. Thus the risk to turn it on is on the buyer. This said, without the license codes is going to be a big

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

On Tue, Jan 05, 2021 at 06:41:30PM +0100, Patrik Schindler via cctalk wrote: > Hello, > > to fellow readers in Germany and surrounding areas: > > HUGE 9406-F2, 300€, pickup in Heidelberg, Germany. Might be a > Multiprocessor-Machine. > > https://cgi.ebay.de/174577267021 > > I’m not related to

Re: DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

That looks like it may be a 730 model complete with a twinax terminal for a console.  One thing that seem to be missing is the electronic key that fits into the odd shaped hole in the operator panel. Paul. On 2021-01-05 1:41 p.m., Patrik Schindler via cctalk wrote: Hello, to fellow readers

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

Den lör 2 jan. 2021 kl 19:34 skrev David Gesswein via cctech < cct...@classiccmp.org>: > This is my info on RD53 sticking heads. Your symtoms match what I have seen > with this drive. > > If the heads are stuck to the rubber bumper the drive will spin back down > when it finds the heads won't

DEDICATED HOBBYIST ALERT: IBM AS/400 9406-F2 for cheap sale in Germany

Hello, to fellow readers in Germany and surrounding areas: HUGE 9406-F2, 300€, pickup in Heidelberg, Germany. Might be a Multiprocessor-Machine. https://cgi.ebay.de/174577267021 I’m not related to the seller. Have seen this by chance. I requested more photos to see what machine it is. Would

Re: Dec RQDX: What kind of chips on it?

> On Jan 5, 2021, at 11:00 AM, Warner Losh wrote: > > > > On Tue, Jan 5, 2021, 7:20 AM Paul Koning via cctalk > wrote: > ... >> As for floppies, the RX50 format is the same for all PDP-11/VAX systems. >> Unlike hard drives, Pro floppies and RQDX3 floppies are identical. The >>

Re: Dec RQDX: What kind of chips on it?

I used the Davids MFM emulator to emulate an RQDX2 formatted disk a few years ago. I tested both with a RQDX1 and RQDX2. Both were tested with 10.0D firmware. I know that we had some initial problems which David fixed quickly. As far as I remember I did read disks as well. But I have no traces of

Re: Dec RQDX: What kind of chips on it?

On Tue, Jan 5, 2021 at 9:20 AM Paul Koning via cctalk wrote: > It's surprising that the RQDX3 wasn't made format-compatible with the older > controllers. I think it's more of a case that DEC completely rolled their own controller for the RQDX1/2 and gave it and went with a standard (SMC)

Re: Dec RQDX: What kind of chips on it?

On 1/5/21 6:20 AM, Paul Koning via cctalk wrote: It's surprising that the RQDX3 wasn't made format-compatible with the older controllers. They built their own controller, with its own unique format, no doubt. The dx3 uses a SMC disk controller. I couldn't find maint drawings anywhere for

Re: Dec RQDX: What kind of chips on it?

On Tue, Jan 5, 2021, 7:20 AM Paul Koning via cctalk wrote: > > > > On Jan 5, 2021, at 6:56 AM, Joshua Rice via cctalk < > cctalk@classiccmp.org> wrote: > > > > These links may help: > > > > http://decvax.50megs.com/doc/rqdx/rqdx.html < > http://decvax.50megs.com/doc/rqdx/rqdx.html> > > ... > >

Re: KL11 asynchronous serial line interface on eBay

Always jarring to see KL... and then not 10 after!

KL11 asynchronous serial line interface on eBay

Here: https://www.ebay.com/itm/284137678274 and: https://gunkies.org/wiki/KL11_asynchronous_serial_line_interface if you want to know what it is. The lot includes an M105 Address Selector and an M782 Interrupt Control (which you'd need to actually use it); the price for the group is quite

Re: Dec RQDX: What kind of chips on it?

It's surprising that the RQDX3 wasn't made format-compatible with the older controllers. It makes sense: The 1/2 used interleaving, which would have required extra code in the 3 to support. The 1/2 figured out the disk geometry based on ROM lookups, the 3 stored the disk geometry on the

Re: Keyboard storage, part 2

> On Jan 5, 2021, at 05:34, John Foust via cctalk wrote: > > At 08:31 PM 1/4/2021, Alan Perry via cctalk wrote: >> Next, I ordered the Uline keyboard boxes. I had to get 25 of them and they >> are not free > > Well, actually... neither are the "free" USPS boxes. *Someone* paid for them, >

Re: Dec RQDX: What kind of chips on it?

> On Jan 5, 2021, at 6:56 AM, Joshua Rice via cctalk > wrote: > > These links may help: > > http://decvax.50megs.com/doc/rqdx/rqdx.html > > ... > There’s definitely incompatabilities between the RQDX2 and RQDX3. They > shouldn’t be assumed to

Re: personal history of personal computers = joke

On 1/4/2021 5:53 PM, Bill Degnan via cctalk wrote: Need to grease/lube it periodically That is your problem there! You grease pigs not cats. Ben.

Re: Keyboard storage, part 2

At 08:31 PM 1/4/2021, Alan Perry via cctalk wrote: >Next, I ordered the Uline keyboard boxes. I had to get 25 of them and they are >not free Well, actually... neither are the "free" USPS boxes. *Someone* paid for them, and they're supposed to be used for shipping. - John

Re: Dec RQDX: What kind of chips on it?

On 05/01/2021 11:47, Joshua Rice via cctalk wrote: I’m not sure where i read it, but i’m pretty sure the main “brains” of the RQDX2 is a T-11 (PDP-11 FALCON) chip, and that does the negotiations between disk and system. I don’t know if it’s the same for the RQDX3, but i’d suspect not, as the

Re: Dec RQDX: What kind of chips on it?

Sorry for the spam! Here’s some high-resolution pics i took of the 2 and 3 for your viewing pleasure: https://imgur.com/gallery/VJPW5YV

Re: Dec RQDX: What kind of chips on it?

These links may help: http://decvax.50megs.com/doc/rqdx/rqdx.html http://www.vcfed.org/forum/archive/index.php/t-47834.html http://web.frainresearch.org:8080/projects/pdp-11/diskcntl.php

Re: Dec RQDX: What kind of chips on it?

I’m not sure where i read it, but i’m pretty sure the main “brains” of the RQDX2 is a T-11 (PDP-11 FALCON) chip, and that does the negotiations between disk and system. I don’t know if it’s the same for the RQDX3, but i’d suspect not, as the incompatabilities between the 2 and 3 are probably