5 May
2004
5 May
'04
9:15 a.m.
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