Just posting this here for the benefit of those who, like myself, are unfamiliar with the Bally Astrocade.
The Astrocade also uses the same Nutting ASICS that the Midway games (Gorf, etc.) used, in lower resolution mode.
There have been hardware hacks built to give the Astrocade the same resolution video as the arcade.
There is some Astrocade source (ex. BASIC) in the Fenton scans I uploaded to bitsavers under pdf/nuttingAssoc, along with some cassette source.