Re: Help Identifying Mystery SBUS Cards

[Richard Sheppard via cctalk]

The only thing I got from the FCCID (GWV 76CG3) on the “SVideo with Composite” 
was “Color Frame Buffer I/O Card”

Richard

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Re: Lisa Source Code

[Richard Sheppard via cctalk]

I believe the original Amiga file system also used a linked-list approach. That 
way you could, theoretically, reconstruct a file from any one of it’s data 
blocks.
Richard

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Re: The weird stuff I keep finding: 19 bit core memory?

[Richard Sheppard via cctalk]

There’s a piece of core on eBay 
https://www.ebay.com/itm/DEC-Digital-H214-Digital-Equipment-Core-Memory-Litton-38540-1/111384040291
 which claims to be H214. The interesting thing is the label says 8K x 16 but 
the silkscreen says 8K x 19.

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Re: Bringing up MVME 197LE (88k)

[Richard Sheppard via cctalk]

A few of the self-tests I’ve seen on the 147s set BRDFAIL if the NVRAM doesn’t 
pass, so perhaps changing the NVRAM for a known good would be a place to start.
Richard

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Re: BYTE Magazines

[Richard Sheppard via cctalk]

That photo is the perfect opportunity to mention the wonderful cover art by 
Robert Tinney.

Richard
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Re: 2.11bsd unix resolver

[Richard Sheppard via cctalk]

On Solaris it’s the “hosts” line in the /etc/nsswitch.conf/ file. Perhaps 
something similar in BSD.

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Re: DEC OS/8 Question (getting an error TOO BIG INIT)

[Richard Sheppard via cctalk]

I’m just going to guess (I have no experience with this architecture) – would 
that mean either file corruption – or possibly the last record needs to be 
padded out with “empty” blocks to be the same size as the others?

Re: Eyring PDOS - paging Camiel Vanderhoeven

[Richard Sheppard via cctalk]

I was running it on a M68k VMEbus. Version PDOS/68020 R3.3a 20-Nov-87. I 
believe BitSavers or archive.org has some reference material

Richard

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FTGH - Compaq laptop LTE 5280

[Richard Sheppard via cctalk]

Worked last time powered (no guarantees), with expansion dock.
Free for pickup only in Toronto, Canada.

Richard Sheppard

Re: PDP8/a Initial Power Up

[Richard Sheppard via cctalk]

Welcome – and watch out where you stick those probes:
EEVBlog -
   https://www.youtube.com/watch?v=xaELqAo4kkQ

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Re: HP 9845A Computer

[Richard Sheppard via cctalk]

My comment was going to be "you just did  :>)"

Richard Sheppard

Re: Computer Design & Automation (CDA), Simpact, EXCLAN

[Richard Sheppard via cctalk]

> Does anybody know anything about these companies or their products?

I have a couple of Simpact VME form factor DSP cards (DSP-LC) which were used 
in a fancy telephone answering machine for radio stations. It was part of a big 
system which allowed listeners to call in and get the weather, lottery, 
joke-of-the-day etc. They could also enter contests and record their phone 
number via DTMF.

Richard Sheppard

Re: Identifying bad RAM on Amiga 1000 WCS board

[Richard Sheppard via cctalk]

> There are hand-drawn schematics floating around but they don't appear
> to match the production hardware

There is a service manual - "Amiga Computer Model 1000 Preliminary Component 
Level Repair PN 314038-02" which does show those PALs on page 1-25 "Amiga 
piggyback PCB assy #327139"

Richard Sheppard

Re: 8085 Dissasembly?

[Richard Sheppard via cctalk]

> Lastly, I wonder if there might be some kind of checksum check to prevent 
> tampering. Is there a common way this is handled in 8085 world? Or is it 
> entirely programmer dependent?

One approach that  be doable for you is if you have a good ROM with a 
known checksum, make your changes then calculate the difference between the new 
and the original checksum and make another change somewhere innocuous to bring 
the checksum back to the original value. "Innocuous" may be the trick - perhaps 
some text string you don't care about, copyright notice etc. or maybe there is 
an empty area in the EPROM you could stick a byte.

Richard Sheppard

Re: Seeking software for SGI/Sun dial box (was Re: IBM 6094-010 "Dials" protocol?)

[Richard Sheppard via cctalk]

On Sun, Mar 25, 2018 at 3:48 PM, Ethan Dicks http://www.classiccmp.org/mailman/listinfo/cctalk>> wrote:

> SN-921

>   
> https://upload.wikimedia.org/wikipedia/commons/7/74/Sgi_dialbox_sn-921_front.jpg

>

> DANAHER CONTROLS Dials DLS80-1022

>   
> https://upload.wikimedia.org/wikipedia/commons/c/cd/SGI_dialbox_DLS80-1022_front.jpg



 https://github.com/hanshuebner/sgi-dialbox-usb/blob/master/dialbox.py

>

> I'm going to test this code out when I have a dialbox in hand.

The Solaris CDs used to have /usr/demo/DIALBOX (and BUTTONBOX) with source 
code. I think it was meant for xview though so you'd need to pick out the 
useful bits (if any).

Richard Sheppard

Re: Old CAD Software KTI/Cascade anno 1997

[Richard Sheppard via cctalk]

On Fri, Sep 22, 2017 at 12:51 AM, Smitsman, Bart via cctalk <

cctalk at classiccmp.org> 
wrote:



> Dear classiccmp subscribers,

>

> Does some know the software Atlas Created by KTI Cascade (

> http://www.kticorp.com/ )

> We need to open 2 drawing but we don't have the software anymore.

>

> We've contacted the company and consultants but they don't have the

> software anymore.

It also may be possible to decode the file format and convert to something 
else, DXF for example.
What is the extension on the drawings?

Richard Sheppard

Re: Service manual for IBM PS/2 Monochrome Display?

[Richard Sheppard via cctalk]

The Technical Reference for the original IBM PC has schematics - "Logic 
Diagrams" in the appendices, including the monochrome monitor. That pre-dates 
the PS2s of course but they may be similar. Usual cautions about discharging 
the anode on the CRT before you poke around in there.

Richard

Re: Intellivision reset switch

[Richard Sheppard via cctalk]

> I'm guessing it was a blob of foam, which has deteriorated, but maybe it 
> was a metal spring, or a piece of u-shaped plastic etc.

May depend on the model, but mine has a spring under the plastic reset button 
in the top of the case and one of those metal domed tactile switches on the PCB.

Richard Sheppard