Jed Yingst's Story
JY: "I do keep in touch with Jim Capp. He provided the picture of the sound board driver we built that was triggered by a keyboard. I gave him this and some other artefacts from other projects when I moved some years ago. Jim did a lot more than programming. Our game control was entirely analogue with digital being used for 555 timer circuits that he designed. He came on board about 3-4 weeks into the project and was instrumental in getting the project to completion. The proto was presented without any sound or scoring. Gottlieb wanted only the BH concept. The route down to the lower playfield was as you summised, piped down using a cut-off sink trap. No other way there but could be returned from lower PF by coil, similar to the production version. The information about the playfield window is very interesting. Both Adolf and John were co-inventors for the 3 patents I was a part of, but I knew nothing of any other patent applications. Neither of these guys or any of the engineering staff liked me very much, as I made them look bad for not coming up with the idea themselves. Also, [Gottlieb] management used to like to rub it in whenever I was around."
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