Alternatively, replacing the ROM SIMM with one from a Mac IIsi or Mac IIfx makes the SE/30 '32-bit clean' and thereby enables use of up to 128 MB RAM and System 7.5 through OS 7.6.1.Ī standard SE/30 can run up to System 7.5.5, since Mac OS 7.6 requires a '32-bit clean' ROM.

Under System 7.0 up to System 7.5.5 the SE/30 can use up to 128 MB of RAM. A system extension called MODE32 enables access to installed extra memory under System 6.0.8. This limited the actual amount of RAM that can be accessed to 8 MB under System 6.0.8. This machine was followed in 1991 by the Macintosh Classic II, which, despite the same processor and clock speed, was only 60% as fast as the SE/30 due to its 16-bit data path, supported no more than 10 MB of memory, lacked an internal expansion slot, and made the Motorola 68882 FPU an optional upgrade.Īlthough it uses 32-bit instructions, the SE/30 ROM, like the IIx ROM, includes some code using 24-bit addressing, rendering the ROM ' 32-bit dirty'. The set included a new front bezel to replace the original SE bezel with that of an SE/30. The SE would then have exactly the same specs as an SE/30, with the difference only in the floppy drive if the SE had an 800 KB drive. In keeping with Apple's practice, from the Apple II+ until the Power Macintosh G3 was announced, a logic board upgrade was available for US$1,699 to convert a regular SE to an SE/30.

The power of the SE/30 was demonstrated by its use to produce the This Week newspaper, the first colour tabloid newspaper in the UK to use new, digital pre-press technology on a personal, desktop computer. It was also the first compact Mac to include a 1.44 MB high density floppy disk drive as standard (late versions of the SE had one, but earlier versions did not). The SE/30 could expand up to 128 MB of RAM (a significant amount of RAM at the time), and included a 40 or 80 MB hard drive. The SE/30 has a black-and-white monitor and a single Processor Direct Slot (rather than the NuBus slots of the IIx, with which the SE/30 shares a common architecture) which supported third-party accelerators, network cards, or a display adapter. It is the fastest of the original black-and-white compact Macintosh series. The Macintosh SE/30 is a personal computer designed, manufactured and sold by Apple Computer from January 1989 to October 1991.

With a 32-bit clean ROM upgrade, Mac OS 7.6 - Mac OS 8.1ġ MB RAM, expandable to 128 MB (120 ns 30-pin SIMM)

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