The built-in ROM disk contains System 7.1 and a collection of classic games. Using the Mac ROM-inator II and the pre-programmed ROM image, the Mac SE/30 can support up to 128MB of RAM! Some older Macintosh models like the IIx, IIcx, and SE/30 have stock ROMs that are “dirty”, meaning they can’t support 32-bit addressing without ROM patches. The pre-programmed ROM image also makes the Mac 32-bit clean, enabling it to use more than 8MB of RAM natively without the need for special system enablers or extensions. The Macintosh IIx, IIcx, IIfx, and SE/30 lack HD20 support in their stock ROMs, so this replacement ROM enables those machines to use HD20 disks. For these other models, the flash memory will need to be reprogrammed with an appropriate ROM image.įor a similar ROM upgrade for the Macintosh Plus, 512Ke, 512K, and 128K, see the original Mac ROM-inator Kit.Ī nice benefit of the pre-programmed ROM image is to add built-in support for HD20-type hard disks, such as the HD20 hard disk emulation mode of the BMOW Floppy Emu. This includes the previously mentioned models as well as many other Quadra, LC, and Performa models. The Mac ROM-inator II module is physically compatible with any Macintosh having a 64-pin ROM SIMM socket, except the Quadra 660AV and 880AV. The pre-programmed ROM image is compatible with the Macintosh IIx, IIcx, IIci, IIfx, IIsi, and SE/30. The ROM-inator II is based on Doug Brown’s original Mac ROM SIMM design, used with permission. Happy Mac icon is replaced by a color smiling “pirate” Mac.Memory test is disabled for faster booting.

New startup menu screen displays installed RAM, addressing mode, and ROM disk details.ROM disk image provides a diskless booting option.Customized startup chime – major 9th arpeggio.It comes pre-programmed with a custom ROM image with the following changes as defaults: The ROM-inator II is fully assembled – just plug it in and run. Once installed, the flash ROM takes over the Macintosh, allowing for a bootable ROM disk and other crazy customization possibilities. Looking to add new features to your old Mac? The Mac ROM-inator II replaces the stock Macintosh ROM with a programmable flash memory module.

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