Re: IIGS hardware questions

[shack@crash.cts.com (Randy Shackelford)]

In article <2tl97u$s22@nyx10.cs.du.edu>,
Chris Deschu <cdeschu@nyx10.cs.du.edu> wrote:

>	While I was looking over my logic board for the above
>described problem, I saw something I'd never noticed before.
>Underneath the power supply, about an inch and a half behind the
>VGC chip, at coordinates C-4 on the logic board, is a pair of pins
>sticking out, like for a jumper block. They are labeled "W1".
>Now, I know there are some on a ROM 3 motherboard in this general
>location, to disable the control panel CDA. However, I've never
>heard of any being present on a ROM 1, which is what I have.
>I'm not about to short them with a jumper block without knowing
>what they are for. For all I know it's a power takeoff or something.
>This is NOT the ones at the far back of the machine, labeled FAN.
>Anyone have any idea what they are for?

My ROM 01's have those as well. I always wondered what they do but no one in my
circles knew. Actually the disable the control panel jumper on ROM 3's is 
labeled S1 and is over in the vicinity of the SCC chip and ADB controller.
--
Randy Shackelford                                "That's right, keep dancing
shack@crash.cts.com                               on the minefield"
                                                                  -Al Bundy