The history of Musashi for anyone who might be interested:
---------------------------------------------------------

Musashi was born out of sheer boredom.
I needed something to code, and so having had fun with a few of the emulators
around, I decided to try my hand at CPU emulation.
I had owned an Amiga for many years and had done some assembly coding on it so
I figured it would be the ideal chip to cut my teeth on.
Had I known then how much work was involved in emulating a chip like this, I
may not have even started ;-)


15-Jul-2013: Musashi license changed to MIT.

10-Jun-2002: Musashi 3.4 released
             - Added various undocumented m68k features thanks to Bart
               Trzynadlowski's experiments.
               See http://dynarec.com/~bart/files/68knotes.txt for details.
             - Fixed a bug that caused privilege violation and illegal
               instruction exceptions to stack the wrong PC value.
             - Added emulation of address errors (Note: this only works
               in 68000 mode.  All other CPUs require a LOT of overhead
               to emulate this.  I'm not sure if I'll implement them or not.

27-Jan-2001: Musashi 3.3 released
             - Fixed problem when displaying negative numbers in disassembler
             - Fixed cpu type selector - was allowing 020 instructions to be
               disassembled when in 000 mode.
             - Fixed opcode jumptable generator (ambiguous operators in the
               test for f-line ops)
             - Fixed signed/unsigned problem in divl and mull opcodes (not
               sure if this was causing an error but best to be sure)
             - Cleaned up the naming scheme for the opcode handlers

14-Aug-2000: Musashi 3.2 released
             - Fixed RTE bug that killed the program counter when in m68020
               mode.
             - Minor fixes in negx and nbcd.
             - renamed d68k.c to m68kdasm.c and merged d68k.h into m68k.h.
               d68k_read_xxx() instructions have been renamed to
               m68k_read_xxx_disassembler().
             - Rewrote exception processing and fixed 68020 stack frame
               problems.
             - FINALLY fixed the mull and divl instructions.
             - Added 64-bit safe code fixes.
             - Added 64-bit optimizations (these will only  be ANSI compliant
               under c9x, and so to use them you must turn on M68K_USE_64_BIT
               in m68kconf.h).

28-May-2000: Musashi 3.1 released
             - Fixed bug in m68k_get_reg() that retrieved the wrong value for
               the status register.
             - Fixed register bug in movec.
             - Fixed cpu type comparison problem that caused indexed
               addressing modes to be incorrectly interpreted when in m68ec020
               mode.
             - Added code to speed up busy waiting on some branch instructions.
             - Fixed some bfxxx opcode bugs.

05-Apr-2000: Musashi 3.0 released
             - Major code overhaul.
             - Rewrote code generator program and changed the format of
               m68k_in.c.
             - Added support for m68ec020.
             - Removed timing from the opcode handlers.
             - Added correct timing for m68000, m68010, and m68020.
               Note: 68020 timing is the cache timing from the manual.
             - Removed the m68k_peek_xxx() and m68k_poke_xxx() instructions and
               replaced them with m68k_get_reg() and m68k_set_reg().
             - Added support for function codes.
             - Revamped m68kconf.h to be easier to configure and more powerful.
             - Added option to separate immediate and normal reads.
             - Added support for (undocumented) m68000 instruction prefetch.
             - Rewrote indexed addressing mode handling.
             - Rewrote interrupt handling.
             - Fixed a masking bug for m68k_get_reg() when requesting the PC.
             - Moved the instruction table sorting routine to m68kmake.c so
               that it is invoked at compile time rather than at runtime.
             - Rewrote the exception handling routines to support different
               stack frames (needed for m68020 emulation).
             - Rewrote faster status register and condition code flag handling
               functions / macros.
             - Fixed function code handling to fetch from program space when
               using pc-relative addressing.
             - Fixed initial program counter and stack pointer fetching on
               reset (loads from program space now).
             - A lot of code cleanup.
             - LOTS of bugfixes (especially in the m68020 code).

13-May-1999: Musashi 2.2 released
             - Added support for m68020.
             - Lots of bugfixes.

25-Mar-1999: Musashi 2.1 released
             - Added support for m68010.
             - Many bugfixes.

17-Mar-1999: Musashi 2.0 released
             - Major code overhaul.
             - Replaced monolithic codebase with a code generator program.
             - Added correct m68000 timing.
             - Moved timing into the opcode handlers.

06-Jan-1999: Musashi 1.0 released

20-Dec-1998: Beta release of Musashi v0.5 that could run Rastan Saga under MAME
             (barely).

04-Dec-1998: Final prototype v0.4

20-Nov-1998: First prototype v0.1

11-Jun-1998: Early disassembler

12-May-1998: First outline