Jeff Walther wrote: > > I'm surprised it would run at all. I had always assumed that with the > MMU stripped out the Macintosh would be missing an essential > component. I'm surprised the operating system can handle the lack of > an MMU. It would be interesting to see what happens if Britt tries to > turn Virtual Memory on. > > Jeff Walther
For a long time, the 68k Mac emulators like Basilisk II didn't emulate the MMU. I don't know if they still don't, I haven't messed with it in awhile (Plenty of real Macs to mess with now ;) ). But, they pretty much worked fine. The net result was the Virtual Memory was completely non-functional; if you turned it on, it'd just show off the next time you booted. Also, alternative OSes such as Linux and BSDs that depend on MMUs for core functions wouldn't work. Apparently, the Mac OS itself (at least through the 8.1 that 68ks support) doesn't need or care about the MMU aside from VM. I don't recall now whether some of the specialized apps like Photoshop that did its own VM and caching worked, but I think they did. Scott --~--~---------~--~----~------------~-------~--~----~ ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ -~----------~----~----~----~------~----~------~--~---
