ditto@cbmvax.UUCP (Michael "Ford" Ditto) (10/27/88)
In article <3731@rphroy.UUCP> tkacik@rphroy.UUCP (Tom Tkacik) writes: [ about replacing the 68010 with an 020 ] > [ ... ] The size of the saved state of a 68020 and 68881 >is much larger than that for the 68010. Each time there is a context switch >the OS thinks it is putting away info for the 68010. The size doesn't matter, since the exception frame is never moved from where it sits on the per-process supervisor stack; only the register set is saved in the user area. What is important, though, is the handling of the new frame types. This essentially means adding a few new cases to the bus-error trap handler. > Perhaps >the hooks are all there, only waiting to be found. Any ideas about where >to start looking? I'm looking, I'll let you know what I find. -- -=] Ford [=- "The number of Unix installations (In Real Life: Mike Ditto) has grown to 10, with more expected." ford@kenobi.cts.com - The Unix Programmer's Manual, ...!sdcsvax!crash!elgar!ford 2nd Edition, June, 1972. ditto@cbmvax.commodore.com