Repairing non-working arcade PCB's that I can find cheap has become one of
my hobbies.

Pong is a classic.  Someone recently asked (knowing that I am interested in
arcade PCB's) how many lines of code did I think was in the original pong.
I was way off.

I am going to hazard a guess and say I think the Ant is to add some noise
to provide a level of randomness to the bounce.

Justin



On 8 September 2016 at 18:17, David VanHorn <microbrix@gmail.com> wrote:

> http://arcarc.xmission.com/PDF_Arcade_Manuals_and_
> Schematics/Pong%20Schematics.pdf
>
> One of my first jobs was repairing these things, a summer job in high
> school.
> (LOVELY schematic work he said, sarcastically...)
>
> I was looking at this and I just noticed an Antenna!  Pin 15 on the main
> board connector.
> To save a little time, it's connected to the cluster of three bipolar
> transistors roughly in the middle.
>
> I have no memory of this, and I can't think offhand what function it migh=
t
> have served.
> Any ideas?
>
> That 309k regulator got ROASTING hot though, browned boards and dead
> regulators were common.
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