PDP-8 signed overflow detection

[Charles Dickman]

On Mon, Mar 25, 2019 at 1:26 AM Kyle Owen via cctalk <cctalk at classiccmp.org>
wrote:

>
> All this to fix a ~45 year old bug in Spacewar! where a ship's velocity
> overflows, causing the ship to "bounce" off of nothing.
>
> I would have figured it was bouncing off a chunk of dark matter.

Cool stuff! PDP-8 programming always seems a bit like puzzle solving.

Kyle
>