RE: Need to archive: GRiD Compass Computer Operating System Software

Original Message Subject: Need to archive: GRiD Compass Computer Operating System Software From: Ian Finder Date: Tue, October 25, 2016 7:08 pm To: "cctalk@classiccmp.org" Folks, there appears to be a large GRiD-sized hole where

Re: Reasonable price for a complete SOL-20 system?

>I bought the lovely SOL-20 system yesterday. Picture: >https://twitter.com/nf6x/status/790631315695513600 Lovely. I'm sure the sloping wood-(veener) sided case design of the Dick Smith System 80 was inspired by the SOL.

Re: DEC bus transceivers

> On Oct 25, 2016, at 12:40 PM, allison wrote: > >> >> Also, I think in a previous email you mentioned that the UNIBUS is 240ohm. >> It’s not. >> It’s 120ohm. > My book says no. Qbus is for sure 120. > OK, re-reading the first part of section 5.2.5, it’s pretty clear

Re: DEC bus transceivers

> On Oct 25, 2016, at 12:40 PM, allison wrote: >> >> Also, I think in a previous email you mentioned that the UNIBUS is 240ohm. >> It’s not. >> It’s 120ohm. > My book says no. Qbus is for sure 120. > Section 5.2.5 of the PDP-11 UNIBUS spec: A Unibus segment must always

Re: PDP15 panel

A litte Ebay shortcut http://www.ebay.co.uk/itm/*itemnumber* so for this guy ... http://www.ebay.co.uk/itm/112179257620 On Tue, Oct 25, 2016 at 2:48 PM, Graham Toal wrote: > Friend of mine pointed this out to me, but I'm a software guy, don't have > any use for hardware.

Re: DEC bus transceivers

On 10/25/16 12:10 PM, Guy Sotomayor Jr wrote: On Oct 25, 2016, at 8:38 AM, allison wrote: On 10/25/16 10:02 AM, Guy Sotomayor Jr wrote: On Oct 24, 2016, at 11:35 PM, ben wrote: On 10/24/2016 2:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM,

Re: Tek 40xx computer users

I sent Brad Srebink a email on this, lets see if I can get the simulator and his Tek Logo examples. From: cctalk on behalf of Pete Lancashire Sent: Monday, October 24, 2016 10:58 AM To: General

Re: Tek 40xx computer users

Thanks Pete. The 4051 is working perfectly so far, with a few examples I have typed in. I started a conversation with VintageTek (Dave Brown and Ed Sinclair) to see what they have. I looked at the 'Toaster' schematics here, it should be fairly easy for me to build this one up:

Game master?

Does anyone remember a subscription time sharing system called, I think, "game master". It was at least available and marketed in the chicago area... possibly nationwide. I just wonder if there is any info on what kind of system it ran on and any preserved info etc. Thanks. -Bob

Re: DEC bus transceivers

On 10/25/2016 03:36 PM, Eric Smith wrote: On Tue, Oct 25, 2016 at 2:09 PM, Paul Koning wrote: As for the receiver, it seems that a TI 75140 (adjustable threshold line receiver) might do the job. The high-level input current spec on that is max 100uA, which exceeds

Electroluminescent Display aging - Was : Re: Flat panel display rot - "tunnel vision" in electroluminescent and other displays- bad seals.

Update: I've swapped the displays and drivers around, and the "tunnel" effect seems to be a property of the panel and not drive electronics. Perhaps they are all high-hour examples? Anyone here an electroluminescent display expert? > > > On Wednesday, July 20, 2016, Ian Finder

Re: PDP15 panel

even with shipping across the pond a great deal if your system is missing one! Ed# In a message dated 10/25/2016 3:15:40 P.M. US Mountain Standard Time, lini...@lonesome.com writes: If it were on this side of the pond I'll be all over that. mcl

Need to archive: GRiD Compass Computer Operating System Software

Folks, there appears to be a large GRiD-sized hole where archived copies of the Compass Computer Operating System software should be. For those not aware, GRiD had an OS product that was quite advanced for the time- with bitmapped graphics, multitasking, a beautiful forms-driven, UI, etc.

Re: DEC bus transceivers

> On Oct 25, 2016, at 4:36 PM, Eric Smith wrote: > > On Tue, Oct 25, 2016 at 2:09 PM, Paul Koning wrote: > >> As for the receiver, it seems that a TI 75140 (adjustable threshold line >> receiver) might do the job. >> > > The high-level input

Re: PDP15 panel

apparently because no one knew about it On 10/25/16 2:48 PM, Graham Toal wrote: > I think he failed to sell it previously at 130 Euros

Re: PDP15 panel

If it were on this side of the pond I'll be all over that. mcl

PDP15 panel

Friend of mine pointed this out to me, but I'm a software guy, don't have any use for hardware. Maybe you guys would be interested. http://www.ebay.co.uk/itm/DEC-PDP-15-console-panel-von-1970-/112179257620?hash=item1a1e67a114:g:kDwAAOSwB09YDf2Q 8 days left. I think he failed to sell it

Re: Blue top DEC cabinet -- cheap

This item has been claimed. --Jason On October 25, 2016 2:04:49 PM PDT, Jason Howe wrote: >Sorry, This is in Seattle, WA. > >--Jason > >On Tue, 25 Oct 2016, Jason Howe wrote: > >> Hey All, >> >> Surplus at work has this right now: >> >>

Re: assembler, disassembler for Intel 8089?

I wrote: > Wrote my own disassembler in Python. No assembler yet. > Now there's an assembler as well. > https://github.com/brouhaha/i89 >

Re: Gould 32/77 (was: NWA auctions)

There are some new scans up now for 32/75 on bitsavers.org/pdf/sel and some software under bits/SEL I'll be working on MPX documentation next On 10/14/16 7:29 PM, Tony Aiuto wrote: > Bob: I may have a lot of software for it, if I can find the tapes and they > are still readable. I even got

Re: Blue top DEC cabinet -- cheap

Sorry, This is in Seattle, WA. --Jason On Tue, 25 Oct 2016, Jason Howe wrote: Hey All, Surplus at work has this right now: http://archives.smbfc.net/uploads/retrocomputing/deccab/ I'm happy to go pay for it and hold it if someone is interested and able to pick it up quickly. --Jason

Blue top DEC cabinet -- cheap

Hey All, Surplus at work has this right now: http://archives.smbfc.net/uploads/retrocomputing/deccab/ I'm happy to go pay for it and hold it if someone is interested and able to pick it up quickly. --Jason

Re: DEC bus transceivers

> On Oct 25, 2016, at 1:35 PM, ben wrote: > >> >> If you want to build boards that will work in a small subset of systems >> that’s >> find…but don’t advertise it as Unibus compatible. I test the boards I >> produce >> in all of my systems (11/20, 11/34, 11/40 and

Re: DEC bus transceivers

> On Oct 25, 2016, at 4:31 PM, Guy Sotomayor Jr wrote: > > >> On Oct 25, 2016, at 1:09 PM, Paul Koning wrote: >> >> >>> On Oct 24, 2016, at 4:48 PM, Guy Sotomayor Jr wrote: >>> >>> ... Where do you see the 25 ns

Re: DEC bus transceivers

On Tue, Oct 25, 2016 at 2:09 PM, Paul Koning wrote: > As for the receiver, it seems that a TI 75140 (adjustable threshold line > receiver) might do the job. > The high-level input current spec on that is max 100uA, which exceeds the DEC specification. One thing everyone

Re: DEC bus transceivers

On 10/25/2016 8:02 AM, Guy Sotomayor Jr wrote: On Oct 24, 2016, at 11:35 PM, ben wrote: On 10/24/2016 2:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM, allison wrote: The voltages are based on TTL levels. What are the unique voltages? The QBUS spec from the

Re: DEC bus transceivers

> On Oct 25, 2016, at 1:09 PM, Paul Koning wrote: > > >> On Oct 24, 2016, at 4:48 PM, Guy Sotomayor Jr wrote: >> >> >>> ... >>> Where do you see the 25 ns spec? I didn't see it (admittedly in a quick >>> scan). >> >> 5.2.7. It’s discussing the

Re: DEC bus transceivers

> On Oct 24, 2016, at 4:48 PM, Guy Sotomayor Jr wrote: > > >> ... >> Where do you see the 25 ns spec? I didn't see it (admittedly in a quick >> scan). > > 5.2.7. It’s discussing the AC loading as a percentage of the risetime (25ns) > to allow for the > reflections.

Re: DEC bus transceivers

On 10/25/16 10:02 AM, Guy Sotomayor Jr wrote: On Oct 24, 2016, at 11:35 PM, ben wrote: On 10/24/2016 2:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM, allison wrote: The voltages are based on TTL levels. What are the unique voltages? The QBUS spec from the

Re: [TUHS] VTServer/etc for V6 Unix

On Tue, Oct 25, 2016 at 10:16 AM, Noel Chiappa wrote: > Is there any interest in all this? If so, I can put together a web page > with > the V6-verion VTServer source, along with the modified V6 serial line stuff > (including a short description of the extended

Re: DEC bus transceivers

> On Oct 25, 2016, at 8:38 AM, allison wrote: > > On 10/25/16 10:02 AM, Guy Sotomayor Jr wrote: >>> On Oct 24, 2016, at 11:35 PM, ben wrote: >>> >>> On 10/24/2016 2:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM, allison wrote: >

Re: DEC bus transceivers

On Tue, Oct 25, 2016 at 2:35 AM, ben wrote: > But who has the big systems now days? Me. > The days of 4K core is long gone. I have Unibus machines that were 8 or more "system units" (DD11CK equivalents), and a PDP-11/20 that takes up 3 BA-11 boxes. 60% of it is 4K core

Re: VTServer/etc for V6 Unix

On 2016-10-25 10:16 AM, Noel Chiappa wrote: > I'll start with getting VTServer to run under V6 (my only Unix, don't > have anything later :-) So, I just got VTServer runnin under V6: ... Is there any interest in all this? If so, I can put together a web page with the V6-verion VTServer

Re: Reasonable price for a complete SOL-20 system?

I bought the lovely SOL-20 system yesterday. Picture: https://twitter.com/nf6x/status/790631315695513600 It will probably be a week or three before I work with it in detail, because right now I'm nominally working on my absurd Retrochallenge 2016/10 project of making a USB interface for an

Re: VTServer/etc for V6 Unix

> I'll start with getting VTServer to run under V6 (my only Unix, don't > have anything later :-) So, I just got VTServer runnin under V6: it successfully loaded a memory diagnostic from the 'server', into the 'client', using 'vtboot' on the latter. (Both running on emulated machines, for

Re: DEC bus transceivers

> On Oct 24, 2016, at 11:35 PM, ben wrote: > > On 10/24/2016 2:18 PM, David Bridgham wrote: >> On 10/24/2016 01:37 PM, allison wrote: >> >>> The voltages are based on TTL levels. What are the unique voltages? >> >> The QBUS spec from the 1979 Bus Handbook (the Unibus

Re: DEC bus transceivers

On 10/24/2016 2:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM, allison wrote: The voltages are based on TTL levels. What are the unique voltages? The QBUS spec from the 1979 Bus Handbook (the Unibus levels are the same): Input low voltage (maximum): 1.3 V Input high voltage

Re: DEC bus transceivers

On 10/25/2016 02:35 AM, ben wrote: > On 10/24/2016 2:18 PM, David Bridgham wrote: >> On 10/24/2016 01:37 PM, allison wrote: >> >>> The voltages are based on TTL levels. What are the unique voltages? >> >> The QBUS spec from the 1979 Bus Handbook (the Unibus levels are the >> same): >> >> Input

Re: DEC bus transceivers

On Mon, 24 Oct 2016, Paul Koning wrote: You need to look at the PDP-11 UNIBUS Design Description document on Bitsavers. Firstly, in section 4-1, it specifies which chips to use and recommends not using a whole list of other chips. The only recommended chips are: 8640, 8641 and 8881. Sure.

Re: Archived viruses, was Re: Reasonable price for a complete SOL-20 system?

Am 24.10.2016 um 23:28 schrieb Terry Stewart: Here is some I wrote some time ago on my experiences with vintage viruses. Bear in mind it's a narrative (and hence somewhat long-winded and rambling) but anyway..here it is for anyone interested...