Re: PDP-12 Restoration at the RICM

Michael, Sounds like you're making some real progress. Next time you're near the ASR33, check the rubber hammer for the print cylinder. These have a tendency to self destruct and in doing so, destroy the cylinder itself...and they can go at anytime. There's a fellow on the Greenkeys that has to

Re: PDP-12 Restoration at the RICM

We spent some time on the console Teletype that came with the PDP-12. The platen was nearly impossible to move, so the Line Feed did not work. We removed the platen, and found that the plastic in the bearing area had swollen and was binding. We sanded, cleaned, and lubricate the bearing surface and

Looking for a Northstar S-100 Double Density Controller

I'm looking for a Northstar double density floppy disk controller. The double density controller will be marked as MDS-ADx. I have seen pictures of this board marked as MDS-AD and MDS-AD3, but I'm not certain how many different versions there may be out there. Obviously, I would greatly prefer t

Apple I gets tossed out for recycling

Have people seen the news a Apple I gets tossed out for recycling the recycler is going to give her $100,000 half of the $200,000 -- tom spa

RE: PDP-12 Restoration at the RICM

Yes, the new rubber hammers are available from David Tumey. I think he wants about $7 for 10 of them. I have a supply of them here in the UK for anyone that needs any. Regards Rob > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Cory > Heisterkamp >

Re: Panaplex display history

On Sat, 30 May 2015, Jon Elson wrote: Is there a good reason why filament lamps were used on minicomputer front panels until the mid 1970s? Things like the PDP11/45, Philips P850, etc all used filament bulbs, not LEDs. Inertia! The 11/45 was designed before LEDs were available, and so they n

Re: Wanted: stand for NeXT monitor

I don't buy it :O Maybe just navigating around the operating system it's true you won't see it balk too much, but once you run an app ... take OmniWeb; it takes a few minutes to render my simple HTML 3.2 homepage on my NeXTstation color slab, 040/25, 32 megs RAM ... the turbo color slab isn't much

Re: Looking for the Tek 465 of Logic Analysers

I've got to go with Alexandre on this, look for an HP 16500B or 16500C or if you want something smaller, an HP 166x or 1670x. You should be able to find a nice one in good shape with all the pod cables, break-outs, "grippies" ... a "full backpack" for a few hundred dollars or less. An HP 165x in n

Re: Bitcoining on a 1401

That explains ... I've got a handful of miscellaneous SMS cards, actually, that I got from my dad; he probably picked them up from some electronics scrap back when he was in high school or when doing his undergrad probably for the same reason as you may have done; to salvage parts from... Professio

Re: Wanted: stand for NeXT monitor

I swear, this is the only place in the world where I have seen the group consensus shake out that NeXTstep was fast and responsive on the NeXT '040 hardware :O I am about to go downstairs and benchmark my Color Slab vs my Quadra 800 and make sure I'm not going nuts, LOL. Best, Sean On Fri, May

Re: Wanted: stand for NeXT monitor

Well, numbers don't lie; I guess I just remember the NeXT as a slower machine because I was always playing with it side by side with SGIs or something :O It actually stacks up pretty well, here's the results of my rough little morning benchmark if anyone wants to know :O NeXT config was: Color Sla

Datasaab D12

Hi Yesterday I picked up a Datasaab D12. Which I didn't know existed until then. Pictures here: http://imgur.com/a/vPTZw It's a small desktop computer intended for small business accounting and invoicing. It's built arround an intel 4004 and has room for expansion cards for memory and "custo

Re: Wanted: stand for NeXT monitor

On May 29, 2015, at 8:50 AM, Sean Caron wrote: > I don't buy it :O Maybe just navigating around the operating system it's > true you won't see it balk too much, but once you run an app ... take > OmniWeb; OmniWeb was always slow, even on HPPA and Pentium II hardware. It’s a very poor app to u

Re: Panaplex display history

On 06/01/2015 04:03 AM, Christian Corti wrote: On Sat, 30 May 2015, Jon Elson wrote: Is there a good reason why filament lamps were used on minicomputer front panels until the mid 1970s? Things like the PDP11/45, Philips P850, etc all used filament bulbs, not LEDs. Inertia! The 11/45 was de

Re: Panaplex display history

On 2015-06-01 17:31, Jon Elson wrote: On 06/01/2015 04:03 AM, Christian Corti wrote: On Sat, 30 May 2015, Jon Elson wrote: Is there a good reason why filament lamps were used on minicomputer front panels until the mid 1970s? Things like the PDP11/45, Philips P850, etc all used filament bulbs,

RE: Panaplex display history

> > > Thinking about it, I seem to remember seeing some picture of an 11/70 > with bulbs as well, but all 11/70 machines I've seen or worked on had > LEDs, so I suspect they might have had bulbs initially as well. DEC used little modules containing an LED and series resistor that were the same

Re: Panaplex display history

On 2015-06-01 18:07, tony duell wrote: Thinking about it, I seem to remember seeing some picture of an 11/70 with bulbs as well, but all 11/70 machines I've seen or worked on had LEDs, so I suspect they might have had bulbs initially as well. DEC used little modules containing an LED and seri

RE: Panaplex display history

> > Thinking about it, I find it surprising that on later disk drives -- RL's, > > RK07s, > > R80s etc, they used bulbs and not LEDs. By that date LEDs were easily > > available and > > reliable. > > I think it was just harder to replace the construction where you had > push buttons with lamps.

Re: Panaplex display history

On 2015-06-01 19:42, tony duell wrote: Thinking about it, I find it surprising that on later disk drives -- RL's, RK07s, R80s etc, they used bulbs and not LEDs. By that date LEDs were easily available and reliable. I think it was just harder to replace the construction where you had push butt

Re: Panaplex display history

On 01/06/2015 17:07, tony duell wrote: DEC used little modules containing an LED and series resistor that were the same size as the bi-pin T1+3/4 bulbs used earlier. In a CPU panel you had to clip out the pre-heat resistors, for obvious reasons. My 8/e is like that, although I think some 8/e's h

Re: Rescue update: DEC RC-25s + / was Re: DEC cartridge ID

On 2015-Jun-01, at 10:09 AM, Robert Armstrong wrote: >> Three RC-25 drives with a dozen-or-so cartridges. We know at least one drive >> works. > > If you actually get an RC-25 drive working, I'd love to hear about it. I > have three RC25s (one actually in my 11/725 and two spares) and none of

Re: Wanted: stand for NeXT monitor

I don't recall/its been too long ago anyway to recall my OmniWeb experiences from my friends NeXT Slab. I do have it loaded on my Apple Mac mini, and it seems to perform just fine. No Pentium II experiences or HPPA to directly relate to though. Jerry On 06/ 1/15 09:46 AM, Chris Osborn wrot

Re: 8-bit Computer TV Channel Use

I received the $19 composite video to HDMI converter that I ordered from Amazon, tested it a bit with my Apple //c, and posted pictures of the results here: http://www.nf6x.net/2015/06/cheap-hdmi-converter-with-apple-c/ Text modes worked pretty well, but graphic modes had a lot of colored f

Re: 8-bit Computer TV Channel Use

On Jun 1, 2015, at 5:24 PM, Mark J. Blair wrote: > I received the $19 composite video to HDMI converter that I ordered from > Amazon, tested it a bit with my Apple //c, and posted pictures of the results > here: > >http://www.nf6x.net/2015/06/cheap-hdmi-converter-with-apple-c/ > > Text m

Re: 8-bit Computer TV Channel Use

> On Jun 1, 2015, at 17:43, Chris Osborn wrote: > Do you happen to have an old CRT TV around with composite input that you can > hook up and compare to, just for yourself? I’ve got an Amdek Color I and > Apple IIc Color Composite here that I’ll try to take some sample pictures of. > Hmm, I

Re: 8-bit Computer TV Channel Use

> On Jun 1, 2015, at 17:43, Chris Osborn wrote: > > The color on the hi-res screens looks pretty good, but the vertical lines > through the blocks on the lo-res screens isn’t quite right. The bottom 4 > lines of text having color bleeding is normal, even on an Apple color > composite monitor.

Re: 8-bit Computer TV Channel Use

On Jun 1, 2015, at 7:03 PM, Mark J. Blair wrote: > Now I'm even more curious about the reports I've heard about having trouble > with video conversion, since the first cheap converter I tried seemed to work > OK with an Apple //c. Color is always the problem with converters. The cheap compos

Re: 8-bit Computer TV Channel Use

> On Jun 1, 2015, at 19:31, Chris Osborn wrote: > This one looks exactly like yours, but it’s even cheaper! I wonder if it’s > the same? > > http://www.amazon.com/dp/B009A6PJKQ When you get it, we can compare pictures of their innards. Mine has a PCB with blue soldermask. Most of the function

Distribution panels (cab kits) for DZV11/DZQ11

Hi, all, I'm looking for distribution panels (cab kits) for DZV11s/DZQ11s - or that wierd cable with the DB25 connectors on one end which substitutes for a cab kit, the BC11U - for the DZV11/DZQ11. (The part number for the distribution panel is 70-19964-00.) (I'm pretty sure the cabkit, which is t