PDP-8/a cleaning

2017-04-24 Thread Pontus Pihlgren via cctalk
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

2017-04-24 Thread ben via cctalk
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?

2017-04-24 Thread Chuck Guzis via cctalk
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: What would cause a regular pattern of bad sectors?

2017-04-24 Thread Terry Stewart via cctalk
> > > My guess on the symptoms described is a scratch or spill. Sometimes > these floppies can be brought back by a simple cleaning of the cookie. > > --Chuck > > Guys, you were on the right track. I looked carefully the disk surface while rotating it. It's subtle but there is a radial

Re: Tektronix 8560 floppies

2017-04-24 Thread Christian Groessler via cctalk
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)

2017-04-24 Thread Tony Duell via cctalk
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

2017-04-24 Thread Noel Chiappa via cctalk
> 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)

2017-04-24 Thread Peter Cetinski via cctalk
> 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)

2017-04-24 Thread Peter Cetinski via cctalk
> 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

2017-04-24 Thread Al Kossow via cctalk
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

2017-04-24 Thread Electronics Plus via cctalk
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)

2017-04-24 Thread Rick Bensene via cctalk
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?

2017-04-24 Thread Chuck Guzis via cctalk
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

2017-04-24 Thread Tony Duell via cctalk
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

2017-04-24 Thread Ethan Dicks via cctalk
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

2017-04-24 Thread Christian Groessler via cctalk
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?

2017-04-24 Thread dwight via cctalk
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?

2017-04-24 Thread Paul Koning via cctalk
> 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

What would cause a regular pattern of bad sectors?

2017-04-24 Thread Terry Stewart via cctalk
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 17. Once or twice it might be just 3, 8 and 17. Or occasionally 3, 8, 9 12, 17. This patten is the

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

2017-04-24 Thread Peter Cetinski via cctalk
> On Apr 24, 2017, at 7:37 AM, Peter Cetinski wrote: > >> >> Just picked up a TRS-80 Model 12, and it boot to the "insert disk >> prompt" ... Yay! >> >> Jim > > > You can find the MC68000 board set (you’ll need a CPU board and at least one > memory board) on eBay quite

Re: Genuine KM11 board

2017-04-24 Thread Tony Duell via cctalk
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)

2017-04-24 Thread Bill Gunshannon via cctalk
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)

2017-04-24 Thread Peter Cetinski via cctalk
> > 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

2017-04-24 Thread Liam Proven via cctalk
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

2017-04-24 Thread Pontus Pihlgren via cctalk
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

2017-04-24 Thread Tony Duell via cctalk
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)

2017-04-24 Thread Ed via cctalk
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)

2017-04-24 Thread Rob Doyle via cctalk
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.