Summagraphics tablet?

From: J.C. Wren <jcwren_at_jcwren.com>
Date: Wed May 5 09:15:08 2004

    I haven't really been following this thread from the start, and I
don't know what model tablet you have, but Googling for "Summagraphics
tablet switch settings" had a bunch of hits, of which this one looks
promising: http://www.surpac.com/refman/default/config/f.htm

    Is that of any help? It lists the names and functions of 3 banks of
8 switches.

    --jc


Jules Richardson wrote:

>On Wed, 2004-05-05 at 07:34, der Mouse wrote:
>
>
>>I have the thing opened up right now. There are 24 DIP switches, three
>>banks of eight, labeled SW1 through SW3.
>>
>>
>
>Yikes! That's a lot of combinations to run through! :-)
>
>I was in the same situation with the old Numonics tablet that I was
>given - no documentation anywhere and the standard mode it was
>configured for didn't make much sense and wouldn't work with any
>drivers. Luckily I only have 8 switches to run through though... I found
>something that happened to work with one of the later Numonics drivers.
>
>
>
>>There is a good deal of "small" logic, CMOS and TTL in the cases I've
>>bothered to look at the numbers on, a bunch of discrete components, and
>>three socketed "big chips": a 2732 UVEPROM with a sticker on which is
>>handwritten "1103" and "7.9"; a 74C154 (why this is socketed I have no
>>idea); and something that looks like a CPU, on which is printed various
>>things in various ways; I think it's probably an 8031.
>>
>>
>
>Well I suppose they run as a SBC, taking input from the pad and
>converting to the necessary protocol before spitting it down the serial
>line.
>
>
>
>>There's also a momentary pushbutton switch of no obvious function
>>(inaccessible with the cover on) labeled SW4
>>
>>
>
>reset, to allow an engineer to reset the pad without killing the power
>all the time? My Numonics tablet has a reset on the back - I'm not sure
>why the user would ever need to do a reset though.
>
>
>
>> and a six-contact card-edge connector of equally obscure function.
>>
>>
>
>My tablet's got both a pen and a puck; maybe that's a pen connector?
>
>cheers
>
>Jules
>
>
>
Received on Wed May 05 2004 - 09:15:08 BST

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