Re: How to open a SUN CDROM drive box?

On Fri, Jul 22, 2016 at 10:35 AM, Mattis Lind wrote: > I am probably too stupid to not understand how to get into this box: > > http://i.imgur.com/7KXKP2l.jpg > > Before I break some parts of the old plastic I better ask... > > What is the procedure to open this up? There

How to open a SUN CDROM drive box?

I am probably too stupid to not understand how to get into this box: http://i.imgur.com/7KXKP2l.jpg Before I break some parts of the old plastic I better ask... What is the procedure to open this up? The drive doesn't seem to work properly. Either I need to get it working somehow or replace it

Re: Possibly rarest Apple 1 ever for auction

"Original owner believed to be an early Apple employee ". You have the current owner who has a receipt from the previous owner who had said he got it from "maybe" an Apple employee back in 1977. On Fri, 22 Jul 2016, Corey Cohen wrote: The key to this board is the evidence it wasn't part of

Re: Reproduction micros

Lars Brinkhoff writes: > The link you posted above says "Sophie maintains that "inspired by" > isn't the right choice of words." [...] I'm just genuinely curious > exactly which features of the 6502 and ARM instruction sets people > think are so alike? I've always interpreted

RE: Nova 3 front panel

Jim wrote... --- Jay did your DG stuff on the back dock move? just curious --- Not yet. One listmember expressed interest but nothing firm. Two racks of DGblue just waiting for someone to cart them off ;) One is an S/200 and it uses bulbs. My S/130 uses LEDS I seem to recall, but

Re: Nova 3 front panel

On 2016-Jul-22, at 10:39 AM, Vincent Slyngstad wrote: > From: jim stephens: Friday, July 22, 2016 12:46 AM >> On 7/22/2016 12:25 AM, Vincent Slyngstad wrote: >>> I mentioned http://www.foxdata.com/blog/tag/nova-312/ to you earlier, which >>> suggested the 28V bulbs. I also found >>>

Looking for HP 9810A keyboard springs

Hi Guys, I've got an HP 9810A that has been stored in sub-optimal conditions by a previous owner; a lot of the keyboard springs have rusted away, so I'm looking for a replacement. These are about 15.5mm outer diameter, 0.35mm thick wire, about 10mm high when uncompressed, and have only about 1.5

Re: WANTED: PDP-8 KE8E Extended arithmetic element

>You used to be able to find a set with connector blocks for $200 to $300 >range on EBay. But I haven't seen any pop up for a couple of years now. > There are actually two individual board on eBay now, but the they are a bit expensive, ~$250 each. The freight change is about $200 to Sweden for

Re: How to open a SUN CDROM drive box?

Mattis, Seen from the front, use a pencil or whatever fits in the holes and count 3 (or 2) holes from the back of each side and push it gently in. There is a notch on each side which locks the cover. Regards, Ed -- Ik email, dus ik besta. BTC : 1J5fajt8ptyZ2V1YURj3YJZhe5j3fJVSHN LTC :

Re: Nova 3 front panel

From: Vincent Slyngstad: Friday, July 22, 2016 10:39 AM Somewhere, I have Oshino's write-up about bulb rated voltage and bulb operating voltage, but I do remember the lifespan varies as some power of the ratio, and it makes a huge difference. (There are also formulae for derating brightness,

Re: Possibly rarest Apple 1 ever for auction

There were no blank boards. That's the key. The sockets were wave soldered by the PCB manufacturer according to Woz. There were 2 runs of 100 boards each. This is also an early layout board (Non NTI) but with different wave soldered sockets than the two known production runs which both used

Re: How to open a SUN CDROM drive box?

On Fri, Jul 22, 2016 at 1:23 PM, Mattis Lind wrote: >> There are a couple of locking tabs on the sides in the back corner. >> You poke at them through the holes in the outer shell. They look >> decorative. Two of them are not. > > That did the trick! Thanks! I think I

Re: Nova 3 front panel

On Fri, 22 Jul 2016, Vincent Slyngstad wrote: Somewhere, I have Oshino's write-up about bulb rated voltage and bulb operating voltage, but I do remember the lifespan varies as some power of the ratio, and it makes a huge difference. (There are also formulae for derating brightness, etc.) I

Re: Nova 3 front panel

From: jim stephens: Friday, July 22, 2016 12:46 AM On 7/22/2016 12:25 AM, Vincent Slyngstad wrote: I mentioned http://www.foxdata.com/blog/tag/nova-312/ to you earlier, which suggested the 28V bulbs. I also found http://www.chookfest.net/nova3/ledmod.html which makes it clear that the voltage

Re: How to open a SUN CDROM drive box?

> > There are a couple of locking tabs on the sides in the back corner. > You poke at them through the holes in the outer shell. They look > decorative. Two of them are not. > > Once you depress one, lift lightly on that back corner and it should > move up 1mm-2mm. Do the other corner and the

Re: Nova 3 front panel

DG generally used 28V, 0.040 Ma (nominal), fragile wire-lead incandescent bulbs for the Nova/SuperNova/Nova2/Nova3 front panels as well as the early Eclipses. The S/130 was DG's first LED-based front panel and was much-appreciated by Field Service. More followup off-list... Bruce On

Re: Nova 3 front panel

On 2016-Jul-22, at 11:00 AM, Vincent Slyngstad wrote: > From: Vincent Slyngstad: Friday, July 22, 2016 10:39 AM >> Somewhere, I have Oshino's write-up about bulb rated voltage and bulb >> operating voltage, but I do remember the lifespan varies as some power of >> the ratio, and it makes a huge

Re: Possibly rarest Apple 1 ever for auction

> From: Corey Cohen > This board is from the 1st PCB house that made the "byte shop" boards > but has the more expensive and reliable RN sockets. Maybe someone at the 1st PCB house made an extra board for themselves, and used better sockets (since it was for themselves)?

Re: HP Computer Museum in the (local) News

Thanks for the link. My heart is sinking every time I read about Jon’s passing. Marc From: cctalk on behalf of Rodney Brown Reply-To: "cctalk@classiccmp.org" Date: Friday, July 22, 2016 at 12:43 AM To:

Re: Nova 3 front panel

On 7/22/2016 10:39 AM, Vincent Slyngstad wrote: I'm not a big fan of the surgery involved in LED conversion, though I understand why folks do it. Particularly if they, like Emil, have used the wrong bulbs and found themselves replacing them all the time. I wouldn't do the surgery, but here's

Re: Reproduction micros

On 22/07/2016 21:23, "Pete Turnbull" wrote: > On 22/07/2016 20:36, Adrian Graham wrote: >> On 22/07/2016 10:04, "Pete Turnbull" wrote: > >>> If you have those, I would strongly recommend you arrange an offsite >>> backup. Say, about 170

Re: Reproduction micros

If these are switching power supplies, the fizzing may be the output filter caps overheating and about to pop their safety 'corks' due to self heating due to high ripple currents. I can across this probelm in a Clary Datacomp 404 computer that I worked on in the late 60's. The initial fix was

Re: Reproduction micros

On 07/21/2016 11:34 PM, Lars Brinkhoff wrote: > It's not. Peter is talking about a four-bit field in the > instructions. You're talking about a six-bit field in the program > counter. Something that's always bothered me about three-address architectures like ARM is why there is the insistence

Re: Reproduction micros

On 22/07/2016 10:04, "Pete Turnbull" wrote: > On 22/07/2016 00:33, Adrian Graham wrote: >> On 22/07/2016 00:07, "Liam Proven" wrote: >> There were only a few made. They were used internally during development - hence the podule to

Re: Reproduction micros

On 22/07/2016 20:36, Adrian Graham wrote: On 22/07/2016 10:04, "Pete Turnbull" wrote: If you have those, I would strongly recommend you arrange an offsite backup. Say, about 170 miles north via the A14/A1 :-) I remember why I've never fired them up, this is the

RE: Nova 3 front panel

Jim; Thanks for the link... I went up the tree and saw the pics of that ADDS Envoy terminal. I'm exceedingly green with envy. Congrats on an awesome piece of kit! J

Re: Possibly rarest Apple 1 ever for auction

On Fri, 22 Jul 2016, Corey Cohen wrote: There were no blank boards. That's the key. The sockets were wave soldered by the PCB manufacturer according to Woz. There were 2 runs of 100 boards each. This is also an early layout board (Non NTI) but with different wave soldered sockets than the

Re: Possibly rarest Apple 1 ever for auction

On Fri, 22 Jul 2016, Corey Cohen wrote: There were no blank boards. That's the key. The sockets were wave soldered by the PCB manufacturer according to Woz. There were 2 runs of 100 boards each. Then, there were blank boards before the shop making the boards populated them. A bord could

Re: heap of floppy disks

On Fri, 22 Jul 2016, devin davison wrote: I picked up two crates jam packed full of floppys today. Bunch of random old utilities in there, borland turbo asm, turbo pascal, windows for workgroups etc. I would be interested in any of the Borland stuff! tnx. g. -- Proud owner of F-15C 80-0007

Re: Possibly rarest Apple 1 ever for auction

It was not someone at the PCB manufacturer. They would not have had access to the prom software. This was a pre-NTI board so Apple at the time was only a handful of people, the only technician was Dan Kottke and he was asked about the board already. BTW, The only known defective board is

8i front

finaly got some pregress on this 8i from a feild restoration of mine.. now to sit down and do an order for the transistors and go talk to the local ewaste recycler on monday see if they can help me source some slider switches like one i found in the junk pile at the local hacker space last night

Re: heap of floppy disks

On Fri, 22 Jul 2016, devin davison wrote: I picked up two crates jam packed full of floppys today. Bunch of random old utilities in there, borland turbo asm, turbo pascal, windows for workgroups etc. I found a set of disks with the DEC digital logo on them. 4-5 disks, says dos for the dec

Re: Reproduction micros

> > It's not. Peter is talking about a four-bit field in the > > instructions. You're talking about a six-bit field in the program > > counter. > > Something that's always bothered me about three-address architectures > like ARM is why there is the insistence on that scheduling bottleneck, > the

Re: Flex Disc options for the HP 9825

On 2016-07-22 9:17 PM, CuriousMarc wrote: Unfortunately, I have the older ROM, the HP 98217A. Says 9885 Flexible Disk Drive on it (duh). Only this 9885, single side low density 8" drive, connected with the parallel interface and a special cable is supported. And indeed as Tony says, to start

RE: Flex Disc options for the HP 9825

Unfortunately, I have the older ROM, the HP 98217A. Says 9885 Flexible Disk Drive on it (duh). Only this 9885, single side low density 8" drive, connected with the parallel interface and a special cable is supported. And indeed as Tony says, to start from a blank disk, you need a tape cartridge

heap of floppy disks

I picked up two crates jam packed full of floppys today. Bunch of random old utilities in there, borland turbo asm, turbo pascal, windows for workgroups etc. I found a set of disks with the DEC digital logo on them. 4-5 disks, says dos for the dec pc. Some utilitys too. Are these of any use to

Re: Reproduction micros

> On Jul 22, 2016, at 8:10 PM, Cameron Kaiser wrote: > >>> It's not. Peter is talking about a four-bit field in the >>> instructions. You're talking about a six-bit field in the program >>> counter. >> >> Something that's always bothered me about three-address

RE: heap of floppy disks

> -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of devin > davison > Sent: 23 July 2016 00:11 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: heap of floppy disks > > I picked up two crates jam packed full

Re: Looking for HP 9810A keyboard springs

Springs are a notoriously annoying. In small volume they are very expensive or hard to find. In high volume you basically have them wound for you and they are very cheap per unit, if you make a ton of them. Not much in-between. In the US I have used both of the below for stock springs with good

Re: HP Computer Museum in the (local) News

On Friday, July 22, 2016 at 17:43, Rodney Brown wrote: > http://www.abc.net.au/news/2016-07-22/vintage-computer-museum-revives-hp21 > 16a-founder-dies/7638458 > > A keen mountaineer who died trekking in Tibet has left a rare computer > collection behind as his legacy. A touching article; thanks

RE: heap of floppy disks

It would not take much time to archive these disks and post somewhere for those who have the disks that have gone bad, have docs but lost the/s disk in the set, etc. Bill Degnan twitter: billdeg vintagecomputer.net On Jul 22, 2016 11:30 PM, "Rob Jarratt" wrote: > >

Re: Nova 3 front panel

On 7/22/2016 12:25 AM, Vincent Slyngstad wrote: From: jim stephens: Thursday, July 21, 2016 9:53 PM I have not had time to figure out the driver circuit for any of the lamps to see what that may turn up, and wanted to know whether it was 28v lamps before I buy 40 of them. (the thing has

Re: Multiflow Trace 14/300 close to being scrapped in Texas

On Jul 21, 2016, at 8:09 PM, Mark Linimon wrote: > > I see that someone has picked it up via Buy It Now. No, > it wasn't me. I know the person who acquired it, who last I heard is seeking a good way to move and safely store it near its current site right now. If anyone

Re: Reproduction micros

On 22/07/2016 00:07, Liam Proven wrote: On 21 July 2016 at 23:26, Pete Turnbull Hmm. Never seen one like that. None of the ones I've seen in real life are PQFPs, and none have a heatsink. Perhaps you misread my message. Ah, I misunderstood. You wrote: The

Re: Nova 3 front panel

From: jim stephens: Thursday, July 21, 2016 9:53 PM I have not had time to figure out the driver circuit for any of the lamps to see what that may turn up, and wanted to know whether it was 28v lamps before I buy 40 of them. (the thing has only 2 out of a lot of lamps). I mentioned

Re: Reproduction micros

Liam Proven writes: > Peter Corlett wrote: >> In ARM, *all* instructions can be predicated. Because instructions >> are 32 bits wide, it has the luxury of allocating four bits to select >> from one of 16 possible predicates based on the CPU flags. > > If I understand it correctly, this caused

Re: Reproduction micros

> An occasionally forgotten feature is that ALU operations also have a S-bit to > indicate whether they should update the flags based on the result, or leave > them alone. Power ISA also has this feature (the so-called "dot" instructions). It also has special forms of instructions for setting the

Re: Possibly rarest Apple 1 ever for auction

The key to this board is the evidence it wasn't part of either of the two known production runs. It was assembled at a different time. corey cohen uǝɥoɔ ʎǝɹoɔ > On Jul 21, 2016, at 10:54 PM, TeoZ wrote: > > "Original owner believed to be an early Apple employee ". You have

Re: Reproduction micros

On 22 July 2016 at 10:26, Pete Turnbull wrote: > I took that as "SA110 came in a plastic QFP, ..., with threaded shanks". > > I see that what you evidently meant was "the Alpha, which had threaded > shanks". Well, no, I meant to write exactly what I did write, drawing a

Re: Reproduction micros

On Thu, Jul 21, 2016 at 09:55:26PM -0600, ben wrote: [...] > A read and cuss item I see. Thank you, but it seems it is still big $$$ for > good compiler to follow the ever changing rules. Eh? The LLVM backend generates excellent code for at least x86 and ARM, and is effectively BSD-licenced.

Re: Reproduction micros

On 22/07/2016 00:33, Adrian Graham wrote: On 22/07/2016 00:07, "Liam Proven" wrote: There were only a few made. They were used internally during development - hence the podule to connect it to a Beeb, which provided the I/O early on - and in the later stages before the

Re: Reproduction micros

On 22/07/2016 00:07, Liam Proven wrote: On 21 July 2016 at 23:26, Pete Turnbull wrote: There were only a few made. They were used internally during development - hence the podule to connect it to a Beeb, which provided the I/O early on - and in the later stages

Re: Reproduction micros

On 22/07/2016 00:56, Paul Koning wrote: PLCC and PQFP both are plastic packages with leads on all 4 sides. But PLCC specifically means a package with J-leads: the legs come out the package side, go straight down, and tuck under the package in a J-shaped curve. PQFP (and variations with similar

HP Computer Museum in the (local) News

http://www.abc.net.au/news/2016-07-22/vintage-computer-museum-revives-hp2116a-founder-dies/7638458 A keen mountaineer who died trekking in Tibet has left a rare computer collection behind as his legacy. Surrounded by bushland in the eastern suburbs of Melbourne is a wooden shed with barn doors.