More details about its inspiration and development are here. The ROM-inator is a descendant of Rob Braun’s original Mac Plus ROM Adapter and disk driver. 128K ROM code turns a Mac 128K or 512K into a 128Ke or 512Ke.

ROM disk image including System 6, Mac Write, Mac Draft, and eight games.Pirate icon is displayed while waiting to load the ROM disk.Happy Mac icon is replaced by a Mac wearing sunglasses.Startup beep is replaced by a glass “ping”.Any of them can be changed by updating the flash memory. The kit includes preprogrammed flash chips with these ROM changes as defaults. For power users, binary editing of the ROM image opens new possibilities like altering the built-in fonts and modifying the system startup routines. A simple GUI tool on the Mac makes it easy to modify common sections of the ROM, including the ROM disk contents.

Customized startup sounds add a touch of fun, and the ROM disk provides fast and convenient boot-ups. The Mac ROM-inator is great for breathing new life into your old compact Mac. You’ll need a hobbyist-friendly fabrication service like OSHPark to create the PCB, and an EPROM programmer for the flash memory chips. Or see the parts list and Gerber files below for information on how to make your own kit. Please see their store for any questions and tech support. You can buy a pre-packaged kit from Kero’s Mac Mods. The Mac ROM-inator Kit has been discontinued at BMOW, but don’t despair! The design is open source:

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