TMF Hg
changelog
- Thu, 17 Apr 2014 01:50:41 -0600
- by andrew@localhost [Thu, 17 Apr 2014 01:50:41 -0600] rev 148
- ignore out-of-range addresses on low-level format commands (s4diag formats once sector past the end of each track)
- Wed, 16 Apr 2014 02:20:43 -0600
- by andrew@localhost [Wed, 16 Apr 2014 02:20:43 -0600] rev 147
- fixed bus error handling for real this time (save registers before every instruction and push the saved registers if a bus error occurs, since the instruction may have changed registers before the bus error, and also stop the instruction immediately with longjmp so it won't change memory after the bus error)
This isn't actually what a real 68k does, but it is a good enough approximation. A real 68k will jump back into the middle of the faulted instruction and resume it from the memory access that faulted as opposed to restarting from the beginning like this CPU emulation does. It would be a lot harder to do that with the way this CPU library is designed. Newer versions of MESS basically do the same thing (they use a newer version of this library).
- Wed, 16 Apr 2014 02:07:24 -0600
- by andrew@localhost [Wed, 16 Apr 2014 02:07:24 -0600] rev 146
- added keyboard mappings for ENTER, CANCL, and EXIT
- Tue, 21 May 2013 22:48:32 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Tue, 21 May 2013 22:48:32 +0100] rev 145
- Code clean up
* Tighten optimisation and warning options to find more potential issues
* Remove unused variable in keyboard code
* Display error message if ROMs fail to load
* Fix format string bugs in WD2010
- Fri, 12 Apr 2013 16:26:25 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Fri, 12 Apr 2013 16:26:25 +0100] rev 144
- Don't set PS1 if there is a level-7 interrupt or bus error
PS1 should only be set if the page was originally present (PS1 or PS0 set). If
PS0 and PS1 are clear (page not present) then do NOT set PS1.
Once again the TRM is blatantly and spectacularly wrong...
- Fri, 12 Apr 2013 12:37:34 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Fri, 12 Apr 2013 12:37:34 +0100] rev 143
- Flush stderr after printing debug messages
- Fri, 12 Apr 2013 12:37:13 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Fri, 12 Apr 2013 12:37:13 +0100] rev 142
- Make the page table volatile (it may change behind gcc's back)
- Fri, 12 Apr 2013 12:36:28 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Fri, 12 Apr 2013 12:36:28 +0100] rev 141
- Make mapper debug logic more verbose (but disable by default)
- Fri, 12 Apr 2013 12:34:32 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Fri, 12 Apr 2013 12:34:32 +0100] rev 140
- Fix read-after-write logic
In some cases (notably reading from a page after having written to it), the
mapper may change the pagestate from "accessed and written" ("dirty"; PS0,PS1)
to "accessed but not written" (clean; PS1,!PS0). This should never, ever, EVER
happen. Once a page is dirty, it remains so until the 68k clears the DIRTY
bit.
Once again, this wonderful bit of logic was missing from the TRM.
- Thu, 11 Apr 2013 09:37:25 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Thu, 11 Apr 2013 09:37:25 +0100] rev 139
- Fix potential unassigned variable
- Thu, 11 Apr 2013 09:37:11 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Thu, 11 Apr 2013 09:37:11 +0100] rev 138
- Check return value of fread()
- Thu, 11 Apr 2013 09:36:53 +0100
- by Philip Pemberton <philpem@philpem.me.uk> [Thu, 11 Apr 2013 09:36:53 +0100] rev 137
- Enable code optimisation to improve quality of GCC warnings