Re: Unusual stuff inside computers

2015-08-03 Thread Ben Sinclair
This one isn't so pleasant... I worked at CompUSA fixing computers in the 90's, and one time an employee brought in his personal machine for repair. Fortunately I wasn't the one that opened it up, as when the tech popped the case, cockroaches scurried everywhere! The machine was beyond hope with

Re: Unusual stuff inside computers

2015-08-03 Thread Adrian Stoness
When I was a toddler apparently I used to stuff penny's inside the floppy drives of my dads rainbow 100 the drives survived this I slot and are still I. Working order as far as I know since last time I saw that beast On Sunday, August 2, 2015, Tom Moss tomjm...@googlemail.com wrote: I once

Re: Unusual stuff inside computers

2015-08-03 Thread Mark J. Blair
On Aug 3, 2015, at 14:51 , ben bfranc...@jetnet.ab.ca wrote: Written on the drive, is a lot different than paper floating around inside The bad blocks were written on the drive in the sense that they were written or printed on a paper label stuck to the top of the drive, not stored

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Jon Elson
On 08/03/2015 03:40 PM, Al Kossow wrote: On 6/10/15 8:17 AM, Jon Elson wrote: I got a Pertec key to tape system surplus, and created a mostly software interface with very minimal hardware to read and write tapes on my S-100 Z-80 system. XL-40? The system I had was, I'm pretty sure, made

Re: Steve Jobs engraved iPads - Re: Unusual stuff inside computers

2015-08-03 Thread drlegendre .
Where is the inscription? Inside the case? On Mon, Aug 3, 2015 at 12:50 PM, Toby Thain t...@telegraphics.com.au wrote: On 2015-08-03 12:49 PM, Steve Algernon wrote: As an employee with some involvement, there was a batch of original iPads that were engraved with Steve Jobs signature. ...

Re: Unusual stuff inside computers

2015-08-03 Thread Fred Cisin
On Aug 3, 2015, at 14:51 , ben bfranc...@jetnet.ab.ca wrote: Written on the drive, is a lot different than paper floating around inside On Mon, 3 Aug 2015, Mark J. Blair wrote: The bad blocks were written on the drive in the sense that they were written or printed on a paper label stuck to the

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Al Kossow
On 8/3/15 6:41 PM, Jon Elson wrote: On 08/03/2015 03:40 PM, Al Kossow wrote: On 6/10/15 8:17 AM, Jon Elson wrote: I got a Pertec key to tape system surplus, and created a mostly software interface with very minimal hardware to read and write tapes on my S-100 Z-80 system. XL-40? The

Re: Unusual stuff inside computers

2015-08-03 Thread ben
On 8/3/2015 3:25 PM, Chuck Guzis wrote: On 08/03/2015 11:33 AM, ben wrote: If is that bad, time for a new drive. Perhaps you don't remember but old ST506-style drives had no automatic bad sector remapping, so even new ones had bad sector maps affixed by the manufacturer. Most often these

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Jon Elson
On 08/03/2015 09:06 PM, Al Kossow wrote: do you have anything on the instruction set? Instruction set? This was not a computer. It was an all hard-wired-logic key to tape system. It could be set to enter data to tape, verify data by retyping it, and it would beep if a record did not

Re: Steve Jobs engraved iPads - Re: Unusual stuff inside computers

2015-08-03 Thread Steve Algernon
On Aug 3, 2015, at 6:52 PM, drlegendre . drlegen...@gmail.com wrote: Where is the inscription? Inside the case? On the back. I don't have a handy picture, but someone else posted theirs: http://deirdre.net/steve-jobss-death-and-influence/back-camera-3/

Re: Unusual stuff inside computers

2015-08-03 Thread Sean Caron
When I was in middle school, I once saw another kid stuff a bunch of potato chips in a Disk ][ ... does that count? LOL Best, Sean On Mon, Aug 3, 2015 at 6:17 PM, Adrian Stoness tdk.kni...@gmail.com wrote: When I was a toddler apparently I used to stuff penny's inside the floppy drives of

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Eric Smith
On Wed, Jun 10, 2015 at 9:47 AM, Al Kossow a...@bitsavers.org wrote: I need to figure out why this program also doesn't deal with tape errors well. If you get an error, it will go into an endless loop creating -1 byte records. I haven't looked at that in many years, so I'm not sure. Maybe

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Eric Smith
On Wed, Jun 10, 2015 at 9:40 AM, Dennis Boone d...@msu.edu wrote: The main limitation seems to be that it's hard to get the (broken) data from a block that had a read error when using SCSI hardware. There's probably a way around this if one digs into lower layers of SCSI magic; I haven't gone

Re: Unusual stuff inside computers

2015-08-03 Thread Chuck Guzis
On 08/03/2015 11:33 AM, ben wrote: If is that bad, time for a new drive. Perhaps you don't remember but old ST506-style drives had no automatic bad sector remapping, so even new ones had bad sector maps affixed by the manufacturer. Most often these were in the form of byte offset from

Re: Unusual stuff inside computers

2015-08-03 Thread Pontus Pihlgren
On Sun, Aug 02, 2015 at 11:55:10AM -0700, Chuck Guzis wrote: Turning this discussion on its head, I wonder if I'm the only one to stash manuals and setup CDs in the cases of my systems. Has anyone ever picked up an old system and found system documentation inside? Not really inside but I

RE: This Hobby Is Actually Useful!

2015-08-03 Thread Maciej W. Rozycki
On Sat, 1 Aug 2015, Robert Jarratt wrote: Thanks for the suggestion, but Hakko appears not to be available in the UK. On ebay I can find US sellers and Chinese sellers. I suspect the Chinese ones are imitations, so I would prefer to avoid those. Sorry - missed the UK part :)

Re: Unusual stuff inside computers

2015-08-03 Thread ben
On 8/3/2015 12:11 PM, Jules Richardson wrote: On 08/02/2015 01:55 PM, Chuck Guzis wrote: Turning this discussion on its head, I wonder if I'm the only one to stash manuals and setup CDs in the cases of my systems. Has anyone ever picked up an old system and found system documentation inside?

Re: Unusual stuff inside computers

2015-08-03 Thread Steve Algernon
As an employee with some involvement, there was a batch of original iPads that were engraved with Steve Jobs signature. Scott Forstall joked I don't want to see these show up on eBay! Anyway, being none too careful, I let my then 3 year old play with it, and she was walking around with rapt

Re: Unusual stuff inside computers

2015-08-03 Thread Jules Richardson
On 08/02/2015 01:55 PM, Chuck Guzis wrote: Turning this discussion on its head, I wonder if I'm the only one to stash manuals and setup CDs in the cases of my systems. Has anyone ever picked up an old system and found system documentation inside? I suppose that bad sector maps for ST506/412

Re: Front Panel Update

2015-08-03 Thread Pontus Pihlgren
On Mon, Aug 03, 2015 at 12:23:56PM +0100, Rod Smallwood wrote: Hi Guys The drawings for pdp8/e (A), pdp8/e (B), pdp8/f and pdp8/m have now gone to the silkscreeners for checking and costing. I'll let you all know when they are available. Those who chose to prepay but to wait

Re: Front Panel Update

2015-08-03 Thread Rod Smallwood
Hi Pontus Thanks that clears up one or two things. I worked on a straight 8 with its clear cover on top along with a couple of 8/e's at Harwell. Whilst at DEC 1975 onwards I saw loads of 8/a's and the odd 8/e lurking on the top of a filing cabinet. As far as I can remember I never

RE: diagnosing an Intel Series II MDS monitor failure

2015-08-03 Thread dwight
From: a...@p850ug1.demon.co.uk Was the failed IC marked '723' or some house number? -tony Hi Tony As I recall, it was marked LAS723-2.5Luckily, before I simply replaced it, I checked the feedbackresistor values. They didn't make sense for 7V.My guess is that it made using the 723 for

Re: Unusual stuff inside computers

2015-08-03 Thread Chris Elmquist
Most Cray systems shipped from Chippewa Falls with several cases of Leinenkugel's beer inside. This was intended for the SEs after they got the system installed and up and running and not for the customer :-) Chris -- Chris Elmquist

Re: Unusual stuff inside computers

2015-08-03 Thread Fred Cisin
I suppose that bad sector maps for ST506/412 hard drives don't count? :-) On Mon, 3 Aug 2015, ben wrote: If is that bad, time for a new drive. In the early days, particularly when actual ST506 and ST412 were common drives, there were VERY VERY few that had no bad tracks. In the days of

Re: This Hobby Is Actually Useful!

2015-08-03 Thread geneb
On Mon, 3 Aug 2015, Sean Caron wrote: When it comes to soldering, I usually recommend Hakko or Pace irons; I have a Hakko 936 and it's a great all-rounder. The FX-888D seems to be their recommended replacement for the 936 so I guess I will endorse that, if they are making the new models as well

Re: SPARCClassic won't boot cdrom

2015-08-03 Thread Jerry Kemp
To the OP. From the OK OBP prompt, can you please share the output of: probe-scsi AND probe-scsi-all assuming your OBP supports those commands. Jerry On 08/ 2/15 04:35 PM, Sean Caron wrote: Oh! And if you're using the boot cdrom mnemonic, make sure that your CD-ROM is actually set to

Re: Unusual stuff inside computers

2015-08-03 Thread Diane Bruce
On Mon, Aug 03, 2015 at 12:33:33PM -0700, Fred Cisin wrote: I suppose that bad sector maps for ST506/412 hard drives don't count? :-) Once upon a time, it was the job of the OS to take this badblock count and remap blocks itself since the drives themselves weren't smart enough. On Mon, 3

paging mouse (rodents/montreal)

2015-08-03 Thread Jay West
Sorry for the public post, can't get through privately. But oddly, the list seems to make it through. Very strange. Mouse, tried sending you a few replies, but your mail server sends rejections back from your MX host. Any chance you could whitelist the classiccmp.org server IP? Best, J

Re: This Hobby Is Actually Useful!

2015-08-03 Thread Sean Caron
When it comes to soldering, I usually recommend Hakko or Pace irons; I have a Hakko 936 and it's a great all-rounder. The FX-888D seems to be their recommended replacement for the 936 so I guess I will endorse that, if they are making the new models as well as they built the old ones (although IMO

Printer manuals that must go!

2015-08-03 Thread Jon Auringer
Good morning all! I have the following printer manuals that I must get out of my space. If you want any of them enough to make it worth my while to ship them, let me know soon. They will be out of here by next Monday, one way or another. Shipping from Madison, WI 53714. Comrex ComRiterIIE

Re: Pertec Tape Drive Interface Musings

2015-08-03 Thread Al Kossow
On 6/10/15 8:17 AM, Jon Elson wrote: I got a Pertec key to tape system surplus, and created a mostly software interface with very minimal hardware to read and write tapes on my S-100 Z-80 system. XL-40? Someone out here put some XL-40 parts and docs up on eBay this weekend, so I went