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Comparing BasiliskII/TECH (file contents):
Revision 1.1.1.1 by cebix, 1999-10-03T14:16:25Z 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
# Line 239 | Line 239 | which are relatively independent from ea
239   - floppy driver ("sony.cpp")
240   - disk driver ("disk.cpp")
241   - CD-ROM driver ("cdrom.cpp")
242 + - external file system ("extfs.cpp")
243   - serial drivers ("serial.cpp")
244   - Ethernet driver ("ether.cpp")
245   - system-dependant device access ("sys_*.cpp")
# Line 380 | Line 381 | MacOS floppy driver comes from the fact
381   Mac models was custom-built for Apple by Sony (this was one of the first
382   applications of the 3.5" floppy format which was also invented by Sony).
383  
384 < 6.10. Serial drivers
384 > 6.10. External file system
385 > --------------------------
386 >
387 > Basilisk II also provides a method for accessing files and direcories on the
388 > host OS from the MacOS side by means of an "external" file system (henceforth
389 > called "ExtFS"). The ExtFS is built upon the File System Manager 1.2 interface
390 > that is built into MacOS 7.6 (and later) and available as a system extension
391 > for earlier MacOS versions. Unlike other parts of Basilisk II, extfs.cpp
392 > requires POSIX file I/O and this is not going to change any time soon, so if
393 > you are porting Basilisk II to a system without POSIX file functions, you
394 > should emulate them.
395 >
396 > 6.11. Serial drivers
397   --------------------
398  
399   Similar to the disk drivers, Basilisk II contains replacement serial drivers
# Line 404 | Line 417 | install a Deferred Task to do the job. T
417   MacOS when it returns to interrupt level 0. This mechanism sounds complicated
418   but is necessary to ensure stable operation of the serial driver.
419  
420 < 6.11. Ethernet driver
420 > 6.12. Ethernet driver
421   ---------------------
422  
423   A driver for Ethernet networking is also contained in the NuBus slot ROM.
# Line 474 | Line 487 | of what happens upon reception of a pack
487  
488   For a more detailed description of the Ethernet driver, see "Inside AppleTalk".
489  
490 < 6.12. System-dependant device access
490 > 6.13. System-dependant device access
491   ------------------------------------
492  
493   The method for accessing floppy drives, hard disks, CD-ROM drives and files
# Line 483 | Line 496 | portable, all device I/O is made via the
496   implemented by the (system-dependant) "sys_*.cpp" modules which provides a
497   standard, Unix-like interface to all kinds of devices.
498  
499 < 6.13. User interface strings
499 > 6.14. User interface strings
500   ----------------------------
501  
502   To aid in localization, all user interface strings of Basilisk II are collected
503 < in "user_strings.cpp" and accessed via the GetString() function. This way,
504 < Basilisk II may be easily translated to different languages.
503 > in "user_strings.cpp" (for common strings) and "user_strings_*.cpp" (for
504 > platform-specific strings), and accessed via the GetString() function. This
505 > way, Basilisk II may be easily translated to different languages.
506  
507 < 6.14. Preferences management
507 > 6.15. Preferences management
508   ----------------------------
509  
510   The module "prefs.cpp" handles user preferences in a system-independant way.

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