Blue RAM Utility © 1980 Perkins Engineering
The Blue Ram Utility, first released in 1980, is a powerful environment for Z80 machine-code programming on a Bally Arcade/Astrocade with a Blue Ram expansion and extra RAM.
Though the utility was only officially released on cassette tape, version 3.0 eventually did find its way onto cartridge via homebrew methods in the mid-1980s.
The utility was improved with each release over the next couple of years. By 1983, the Blue Ram Utility 3.0 included a full-featured (full-screen) hex editor that utilized a small font, use of a modem, use of an EPROM burner, a disassembler, and the ability to test RAM in the Blue Ram as if it were a cartridge. Other related capabilities made this the best way to program in Z80 machine language on the Bally Arcade!
Game's ROM.