PDP-8/a cleaning

Hi My PDP-8/A is up for restoration. More specifically and 8A100 according to it's ID plate. It is in overall "ok" shape but oh so dusty. I'd like to give it a good cleaning so I'm tearing it down. And I'm looking for suggestion to cleaning the backplane and regulator board. I'm considering

Re: Bitsavers size

On 4/24/2017 5:30 AM, Liam Proven via cctalk wrote: On 23 April 2017 at 16:53, Alexander Schreiber via cctalk wrote: Or a single LTO3 cartridge, with room to spare ;-) So what we need to do is calculate the bandwidth of a truck full of LTO-3 tapes hurtling down a

Re: What would cause a regular pattern of bad sectors?

On 04/24/2017 02:40 PM, Terry Stewart wrote: > Guys, you were on the right track. I looked carefully the disk > surface while rotating it. It's subtle but there is a radial > kink/distortion in the platter. You can only really see it if you > have strong light, like that from a bulb,

Re: Tektronix 8560 floppies

On 04/24/17 17:54, Al Kossow via cctalk wrote: that reminds me I wanted to see if the a.out format was compatible with stock V7 and if the tools would run on an ordinary PDP-11 Unix V7 system. If you want I can send you some sample execuables to test... I wanted to test the same but I first

Re: Genuine KM11 board (and plea for RX01 Front Bezel)

On Mon, Apr 24, 2017 at 4:03 PM, Rick Bensene via cctalk wrote: > Tony D. wrote: > >> Are any DEC enthusiasts here jealous of this : >>https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ > > Interesting coincidence. I was digging through some boxes

Re: Genuine KM11 board

> From: Tony Duell > Are any DEC enthusiasts here jealous of this Actually, not me! I'm an old enough campaigner that I recall when real light bulbs were standard, and they were a total PITA! So when LED's arrived, we all though they were the greatest thing since sliced bread. So I'm

Re: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

> On Apr 24, 2017, at 11:36 AM, Jim Brain wrote: > > For now, since the KB is most needed and somewhat hard to find, and since I > design HW for classic machines, I think a small uC and some wire might tide > me over until I can find a reasonably priced KB. I did a quick

Re: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

> On Apr 24, 2017, at 11:49 AM, Jim Brain wrote: > > I'll email off-list about disks, as I truly know so little about the unit, > I'm not sure what to ask for. Certainly. > > Are you considering going to Assembly? If so, I'd defer to your exhibit, as > you know much more

Re: Tektronix 8560 floppies

On 4/24/17 6:55 AM, Christian Groessler via cctalk wrote: > Hi, > > I've imaged (with ImageDisk) some floppies I've got with my "new" 8560 system. that reminds me I wanted to see if the a.out format was compatible with stock V7 and if the tools would run on an ordinary PDP-11 Unix V7 system.

RE: Computer pickup

Richard Byron Computer Reset 9525 Skillman St Dallas, TX 214-348-6484 Richard is one of the nicest old men I have ever met! He has been repairing computers and terminals since 1983. Please be aware that if you have allergies, PLEASE take Benadryl or something before you go. The aisles are only

RE: Genuine KM11 board (and plea for RX01 Front Bezel)

Tony D. wrote: > Are any DEC enthusiasts here jealous of this : >https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ Interesting coincidence. I was digging through some boxes of stuff yesterday, and I came across two sets of these in really nice condition. Haven't

Re: What would cause a regular pattern of bad sectors?

On 04/24/2017 06:51 AM, dwight via cctalk wrote: > Many format programs don't look at the index anymore as it isn't > important for reading the disk. It is only used to indicate that the > disk is turning. That may be true for some systems, but for the NEC 765-based controllers found in PCs, the

Re: Genuine KM11 board

On Mon, Apr 24, 2017 at 3:34 PM, Ethan Dicks wrote: > On Mon, Apr 24, 2017 at 5:35 AM, Tony Duell via cctalk > wrote: >> Are any DEC enthusiasts here jealous of this : >> >> https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/

Re: Genuine KM11 board

On Mon, Apr 24, 2017 at 5:35 AM, Tony Duell via cctalk wrote: > Are any DEC enthusiasts here jealous of this : > > https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ Yes. I have a replica KM-11 but the real thing is cool. -ethan

Tektronix 8560 floppies

Hi, I've imaged (with ImageDisk) some floppies I've got with my "new" 8560 system. You can find them at ftp://ftp.groessler.org/pub/chris/tektronix/8560/diskimages . Among other things there are cross-assemblers for 68000, 6809, and 6800. From the TNIX installation disk set one is missing

Re: What would cause a regular pattern of bad sectors?

Heat damage can cause a fold or wrinkle as well. Many format programs don't look at the index anymore as it isn't important for reading the disk. It is only used to indicate that the disk is turning. That is why you see it moving each time you reformat. It is the same place on the disk

Re: What would cause a regular pattern of bad sectors?

> On Apr 24, 2017, at 8:44 AM, Terry Stewart via cctalk > wrote: > > Hi guys, > > Ive been extracting data off a 3.5 inch windows XP-formatted floppy disk > with many bad sectors. The odd thing is it's always the same bad sectors > on every track. Such a 3, 8, 12 and

Re: Genuine KM11 board

On Mon, Apr 24, 2017 at 10:42 AM, Pontus Pihlgren wrote: > On Mon, Apr 24, 2017 at 10:35:13AM +0100, Tony Duell via cctalk wrote: >> Are any DEC enthusiasts here jealous of this : >> >> https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ >> > > A

RE: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Jim Brain via cctalk [cctalk@classiccmp.org] Sent: Sunday, April 23, 2017 11:43 PM To: couryho...@aol.com; cctalk@classiccmp.org Subject: Re: Looking for TRS-80 Model parts (and/or someone in the

Re: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

> > In a message dated 4/23/2017 8:14:33 P.M. US Mountain Standard Time, > cctalk@classiccmp.org writes: > > Just picked up a TRS-80 Model 12, and it boot to the "insert disk > prompt" ... Yay! > > But, no card cage, and no KB (and no disks, but those might be easier to > find) > > I'd

Re: Bitsavers size

On 23 April 2017 at 16:53, Alexander Schreiber via cctalk wrote: > Or a single LTO3 cartridge, with room to spare ;-) So what we need to do is calculate the bandwidth of a truck full of LTO-3 tapes hurtling down a highway, surely? -- Liam Proven • Profile:

Re: Genuine KM11 board

On Mon, Apr 24, 2017 at 10:35:13AM +0100, Tony Duell via cctalk wrote: > Are any DEC enthusiasts here jealous of this : > > https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ > A little bit. I like your key fob, although it must be quite uncomfortable in a pocket :)

Genuine KM11 board

Are any DEC enthusiasts here jealous of this : https://www.flickr.com/photos/tony_duell/33427116663/in/dateposted-public/ -tony

Re: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

very good radioengr give Jim a hand with it It is going to take a pretty big box to ship it for Jim.. I am trying to remember how big the think is I have not seen ours in eons. We have some large boxes we have saved but will have to see what it would take to get at them. The

Re: Looking for TRS-80 Model parts (and/or someone in the Phoenix, AZ area)

I'm in the Phoenix area - Peoria specifically. Let me know if I an help. On 4/23/2017 8:14 PM, Jim Brain via cctalk wrote: Found a seller of a model 12 with these items, but local pickup only.