Re: Floating point routines for the 6809

2017-03-27 Thread Eric Smith via cctalk
On Mon, Mar 27, 2017 at 2:53 PM, Sean Conner via cctalk < cctalk@classiccmp.org> wrote: > Some time ago I came across the MC6839 ROM which contains floating point > routines for the 6809. The documentation that came with it stated: > > Written for Motorola by Joel Boney, 1980 >

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Paul Anderson via cctalk
If you are concerned about hex height boards or mos, you can always use a BA11-KE expansion box. On Mon, Mar 27, 2017 at 6:04 PM, Ethan Dicks via cctalk < cctalk@classiccmp.org> wrote: > On Mon, Mar 27, 2017 at 12:20 PM, Al Kossow via cctalk > wrote: > > On 3/27/17 7:37

Floating point routines for the 6809

2017-03-27 Thread Sean Conner via cctalk
Some time ago I came across the MC6839 ROM which contains floating point routines for the 6809. The documentation that came with it stated: Written for Motorola by Joel Boney, 1980 Released into the public domain by Motorola in 1988 Docs and apps for Tandy Color

Unibus/QBus transceivers and drivers - was Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Toby Thain via cctalk
On 2017-03-27 6:46 PM, Ethan Dicks via cctalk wrote: On Mon, Mar 27, 2017 at 6:35 PM, Steve Malikoff via cctalk wrote: After seeing this modern memory board project for the PDP-8/e using NVRAMMs http://www.tronola.com/html/ram_for_pdp-8e.html I have a couple of those I

Microdata and Decision Data haul from usual site

2017-03-27 Thread jim stephens via cctalk
I was able to get hold of a lot of boards which had been pulled from two Decision Data's and a Western Dynex 2400 RPM 10mb (probably) drive. The Dynex drive is similar to the RL02 and in fact was configurable to look like one in one of the options. Microdata would have used 24 sector packs

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Ethan Dicks via cctalk
On Mon, Mar 27, 2017 at 12:20 PM, Al Kossow via cctalk wrote: > On 3/27/17 7:37 AM, Systems Glitch via cctalk wrote: >>> I don't know of MOS memory appearing in 11/20s as built by DEC, but there's >>> no reason against it. > > There were 3rd party cards, Monolithic

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Guy Sotomayor Jr via cctalk
Yes, the MEM11 is about 1/2 assembled at the moment (I just haven’t had the time to finish it…you know WORK gets in the way). TTFN - Guy > On Mar 27, 2017, at 3:46 PM, Ethan Dicks via cctalk > wrote: > > On Mon, Mar 27, 2017 at 6:35 PM, Steve Malikoff via cctalk >

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Ethan Dicks via cctalk
On Mon, Mar 27, 2017 at 6:35 PM, Steve Malikoff via cctalk wrote: > After seeing this modern memory board project for the PDP-8/e using NVRAMMs > http://www.tronola.com/html/ram_for_pdp-8e.html I have a couple of those I need to solder up. > I wonder how much effort it

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Steve Malikoff via cctalk
>> On Mar 27, 2017, at 9:15 AM, Ethan Dicks via cctalk >> wrote: >> Was there ever a quad MOS memory board for the 11/20? It would have >> to be 4K or less, I'd expect, given the era and size of RAM. I know >> by a few years later, with the 11/04, MOS was becoming

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Mark Linimon via cctalk
On Mon, Mar 27, 2017 at 09:15:27AM -0400, Ethan Dicks via cctalk wrote: > I also saved what C-sized prints I could find, and the rest > appear to be on Bitsavers. I was given a pile of them many years ago. If there is something missing, let me know. My project to declutter has stalled at the

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread ben via cctalk
On 3/27/2017 3:32 AM, Philipp Hachtmann via cctalk wrote: On 03/27/2017 08:05 AM, Paul Birkel via cctalk wrote: http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20- units-today Haha, those low-brain comments! User g4ugm: "have core memory... lower value" I can

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Al Kossow via cctalk
On 3/27/17 7:37 AM, Systems Glitch via cctalk wrote: >> I don't know of MOS memory appearing in 11/20s as built by DEC, but there's >> no reason against it. There were 3rd party cards, Monolithic Systems, for example. The problem with the 11/20 is that hex wide cards don't fit, the fans

Fwd: 50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY

2017-03-27 Thread Al Kossow via cctalk
FYI Forwarded Message Subject:50% DISCOUNT WEBSITE MANUAL & PARTS, ONE WEEK ONLY Date: Mon, 27 Mar 2017 06:53:02 -0700 From: Tucker Electronics Company To: a...@bitsavers.org 50% DISCOUNT WEBSITE MANUALS & PARTS, ONE WEEK ONLY Thanks

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread jim stephens via cctalk
I have replied over on vcfed, but so far not sign that my activities are going anywhere. If someone can help in contacting, I've got the resources to collect the system, but so far no sign of what is going on anywhere but the original posts. thanks jim On 3/27/2017 4:53 AM, Ben Sinclair via

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Systems Glitch via cctalk
> I don't know of MOS memory appearing in 11/20s as built by DEC, but there's > no reason against it. It's just Unibus memory. It wouldn't have to be 4k > either; if you had a 32kW memory card that should work just fine. Indeed, Unibus is Unibus, except when it's MUD :) Thanks, Jonathan

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Paul Koning via cctalk
> On Mar 27, 2017, at 9:15 AM, Ethan Dicks via cctalk > wrote: > >> ...Haha, those low-brain comments! >> >> User g4ugm: "have core memory... lower value" > > Indeed... I'm still kind of annoyed that the 11/20 I rescued from the > dumpster at work in 1984 got mildly

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Ethan Dicks via cctalk
On Mon, Mar 27, 2017 at 8:59 AM, Philipp Hachtmann via cctalk wrote: > Hm, interesting point of view... The 11/20 is the simplest 11 as far as I > know. No microcode that can go bad. Yep. Simple and spread across multiple cards. > The core memory systems are quite

Re: STC 2920 tapedrive schematics

2017-03-27 Thread Tor Arntsen via cctalk
On 24 March 2017 at 18:40, Camiel Vanderhoeven via cctech wrote: > Does anyone have schematics for an STC (StorageTek) 2920 reel-to-reel > tapedrive?[..] That drive was discussed on the list some time ago. All the docs should be available on bitsavers by now, although I

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Ethan Dicks via cctalk
On Mon, Mar 27, 2017 at 5:32 AM, Philipp Hachtmann via cctalk wrote: > On 03/27/2017 08:05 AM, Paul Birkel via cctalk wrote: >> http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20- >> units-today Nice find, even if they are bit rough. > Haha, those

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread JP Hindin via cctalk
On Mon, 27 Mar 2017, Ben Sinclair via cctalk wrote: I'm only a half hour from Boone. But, I can barely keep my 11/23 running, so I don't think I would be a good owner for these. I offered to help the poster if they want, as I don't want to see these scrapped either. Hey Ben; Apologies for

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Philipp Hachtmann via cctalk
On 03/27/2017 12:03 PM, dave.g4...@gmail.com wrote: On 03/27/2017 08:05 AM, Paul Birkel via cctalk wrote: http://www.vcfed.org/forum/showthread.php?56897-Came-across-three- PDP- 11-20- units-today Haha, those low-brain comments! User g4ugm: "have core memory... lower value" I have

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Ben Sinclair via cctalk
I'm only a half hour from Boone. But, I can barely keep my 11/23 running, so I don't think I would be a good owner for these. I offered to help the poster if they want, as I don't want to see these scrapped either. On Mon, Mar 27, 2017 at 1:05 AM, Paul Birkel via cctalk < cctalk@classiccmp.org>

RE: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Dave Wade G4UGM via cctalk
> > > > On 03/27/2017 08:05 AM, Paul Birkel via cctalk wrote: > > http://www.vcfed.org/forum/showthread.php?56897-Came-across-three- > PDP- > > 11-20- > > units-today > > Haha, those low-brain comments! > > User g4ugm: "have core memory... lower value" > I have the impression that 11's

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Philipp Hachtmann via cctalk
On 03/27/2017 08:05 AM, Paul Birkel via cctalk wrote: http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20- units-today Haha, those low-brain comments! User g4ugm: "have core memory... lower value" I can offer high performance pdp11 QBus gear for core memory based

Re: [VideoMagia] Reparando um Vectrex

2017-03-27 Thread Tor Arntsen via cctalk
On 24 March 2017 at 22:13, jim stephens wrote: > > > On 3/24/2017 8:43 AM, Tor Arntsen via cctalk wrote: No, I did not! > It sure has the signature of spam. A link to some random place, without > explanation of what it is, text in Portuguese when the list uses English...

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Mark Linimon via cctalk
On Mon, Mar 27, 2017 at 02:05:56AM -0400, Paul Birkel via cctalk wrote: > Need some lovin'. Not near enough to here . I would go to Iowa. Hell, it's not *that* far from Texas. (OTOH I could only take one of them.) Guess I'll have to sign up in the a.m. so I can see the pictures. mcl

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread jim stephens via cctalk
On 3/26/2017 11:50 PM, Paul Anderson via cctalk wrote: I'm close and interested, but it won't let me reply If you have a vcfed account private message the original poster. I also replied have close in as well, and am very interested. I replied on the thread, but it is moderated for

Re: PDP-11/20 in Iowa (x3)

2017-03-27 Thread Paul Anderson via cctalk
I'm close and interested, but it won't let me reply On Mon, Mar 27, 2017 at 1:05 AM, Paul Birkel via cctalk < cctalk@classiccmp.org> wrote: > http://www.vcfed.org/forum/showthread.php?56897-Came- > across-three-PDP-11-20- > units-today > > > > Need some lovin'. Not near enough to here . > >

PDP-11/20 in Iowa (x3)

2017-03-27 Thread Paul Birkel via cctalk
http://www.vcfed.org/forum/showthread.php?56897-Came-across-three-PDP-11-20- units-today Need some lovin'. Not near enough to here . -