On Sat, 8 May 2010, Brian Foley wrote:
c) The SE from 1987 was very similar to the Plus in terms of specs. It also had an 8 MHz 68000, could take up to 4 MB of 30 pin SIMMs but had a proprietary expansion slot and ADB for keyboard and mouse. I think there were a couple of third party 68020 upgrade boards for the SE, but these definitely weren't common. Since they would have been Apple System 5 or 6 era, they would have predated Apple's introduction of virtual memory support in System 7 in 1991.
It's possible they were an after market add on. I saw them when they were coming in for non-warrenty repair or upgrades. Adding more memory was the most common upgrade I remember.
d) The SE/30, which is possibly the machine Greg was thinking of, was released in 1989, had a 16 MHz 68030 with a built-in MMU, an FPU, and could (with upgraded ROMs and dense SIMMs) use up to 128 MB of RAM (8 MB with the original ROMs). There were a large number of expansion cards produced for it, including powerful (for the time) graphics cards; ethernet cards; and CPU & FPU upgrades.
Nope I remember the SE/30 as a diffferent beast, the SE/30 needed the OS upgrade to work at all. I don't think it actually needed system 7 and the MMU on, but it came with an update just to work. It was a fair bit faster too. Dang, that was a long time ago. -- Greg Weeks http://durendal.org:8080/greg/