On Tue, Oct 4, 2016 at 3:14 PM, Al Kossow <a...@bitsavers.org> wrote:
> > > On 10/4/16 3:02 PM, Ken Seefried wrote: > > > Dumb question...did the '451 have a mechanism to work around the > > instruction restart issue in the 68000? > > no. the 68451 is a segmented mmu, so you wouldn't use it for demand > paging. the normal way you use it in unix is setting up segents for > text, data, and bss > > > > I remember reading the spec sheets for a MMU of that type - for the 6809! That was one versatile little processor. -- Ian S. King, MSIS, MSCS, Ph.D. Candidate The Information School <http://ischool.uw.edu> Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical Narrative Through a Design Lens Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> Value Sensitive Design Research Lab <http://vsdesign.org> University of Washington There is an old Vulcan saying: "Only Nixon could go to China."