>I got a Midway Asteroid board but it's missing a few chips (15 to be exact).
*newbies material* If curious, Juergen's Space Race net code also has these ics indicated within the code.
Here is what I copied from Asteroid general instructions pages. Not to be mistaken for actual Asteroid parts catalog which Midway also had printed for Asteroid cabs.
The data comes from pcb layout page because the troubleshooting section might have a couple typos.