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Comparing BasiliskII/TECH (file contents):
Revision 1.2 by cebix, 1999-10-21T18:29:06Z vs.
Revision 1.4 by cebix, 2000-07-13T17:45:51Z

# Line 54 | Line 54 | and EMULATED_68K defines in "sysdeps.h")
54     functions (do_get_mem_long() etc.) that translate addresses. This slows
55     down the emulator, of course.
56  
57 < 2. Emulated CPU, "real" addressing (EMULATED_68K = 1, REAL_ADDRESSING = 0):
57 > 2. Emulated CPU, "real" addressing (EMULATED_68K = 1, REAL_ADDRESSING = 1):
58     This mode is intended for big-endian non-68k systems that do allow access to
59     RAM at 0x0000..0x1fff. As in the virtual addressing mode, the 68k processor
60     is emulated with the UAE CPU engine and two areas are set up for RAM and ROM
# Line 105 | Line 105 | and EMULATED_68K defines in "sysdeps.h")
105          priviledged instructions, mostly for interrupt control). So either
106          the whole emulator has to be run in supervisor mode (which usually is
107          not possible on multitasking systems) or priviledged instructions have
108 <        to be trapped and emulated. The Amiga version of Basilisk II uses the
109 <        latter approach (it is possible to run supervisor mode tasks under
110 <        the AmigaOS multitasking kernel (ShapeShifter does this) but it
111 <        requires modifying the task switcher and makes the emulator more
112 <        unstable).
108 >        to be trapped and emulated. The Amiga and NetBSD/m68k versions of
109 >        Basilisk II use the latter approach (it is possible to run supervisor
110 >        mode tasks under the AmigaOS multitasking kernel (ShapeShifter does
111 >        this) but it requires modifying the Exec task switcher and makes the
112 >        emulator more unstable).
113       c) On multitasking systems, interrupts can usually not be handled as on
114          a real Mac (or with the UAE CPU). The interrupt levels of the host
115          will not be the same as on a Mac, and the operating systems might not

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