278 lines
11 KiB
Plaintext
278 lines
11 KiB
Plaintext
Changed in 0.8:
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Upgraded to modern-ish times...X11 now uses 32bit color!
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Audio is now OpenAL instead of raw PC speaker access. We are indebted to
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AppleWin for much of the sound code including preliminary suport for
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Mockingboard emulation.
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Bugfix and simplification for PC Joystick. Joystick emulation is now
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bug-for-bug compatible with original Apple ][. Better calibration routines and
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better "feel" for emulation of joystick on keypad/arrow-keys.
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Better emulation fidelity overall by counting 6502 CPU cycles. This was
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necessary for proper output of stream digital audio in OpenAL.
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Significant interface and preferences changes and simplifications.
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Changed in 0.7.4:
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Many bugs have been fixed, including a calling-convention mistake that
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could cause unpredictable behavior on reboot. Potential buffer overflows
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have also been corrected.
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Some key assignments have changed. Joystick buttons are now Left-Alt,
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Right-Alt & Insert. Delete, formerly a joystick button, now produces the
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DEL ascii code. Reboot is now Break (Ctrl-Pause), and Reset is now
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Ctrl-Printscreen. (This is reversed from 0.7.3)
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Some significant optimizations were also made in the assembly code. The
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large memory-access indirection table is now compressed using virtual
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memory tricks, to slightly reduce cache load and swap requirements.
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Also many cleanups have been made in the internal code. This is
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user-invisible, and far from complete. When done, it will become easier to
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add new interface cards, video drivers, and other stuff, as well as port
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to other unixes.
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Changed in 0.7.3:
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More makefile/configuration bugs were fixed.
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The `Mystery House' sample disk, which was accidently omitted from my
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distributions, has been reinstated. Also, I've added a new sample
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disk image - William Night's emulator performance tests.
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Changed in 0.7.2:
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The configure script will now react to absence of X Windows or SVGAlib by
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only building an emulator for the remaining graphics system.
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A makefile bug that caused xapple-80col not to depend on
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all it's source files was fixed. Also, the alternate character set is now
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correctly restored on exit from the <F10> menu.
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Some major cleanups were done to the assembly-language files. This is
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invisible to the user, but should make further enhancement a little saner.
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The banners on the source code have been synchronized.
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Changed in 0.7.1:
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1. Fixed a makefile bug that caused xapple-80col to be miscompiled.
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2. Put sample .apple2 (config file) back in. It was accidentally excluded
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from 0.7.
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3. The SVGA emulator is again named `apple2', not `sapple2'.
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Changed in 0.7: (Sep 98)
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Version 0.7 - Michael Deutschmann <michael@talamasca.wkpowerlink.com>
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1. Replaced "character.rom" and Aaron's MouseText table in misc.c with
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a single file, font.txt, which is converted into a packed c table by a
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generator utility.
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2. Overhauled Makefile system. We now use GNU autoconf/automake.
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Note: This hasn't been tested extensively. Also, there are a few automake
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tricks I haven't bothered with - I added them to TODO.
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Changed is 0.06: (Aug 98)
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-------------------------
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Version 0.06 - Aaron Culliney <chernabog@baldmountain.bbn.com,
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aculline@bbn.com>
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My code changes have nothing to do with my employer, GTE
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Internetworking, BBN Technologies. They were written completely on my
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own time and on my own machine.
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1) Separated SVGAlib specific stuff into svideo.c. Added X Windows
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frontend support in xvideo.c. The X frontend works by doing an
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X(Shm)PutImage() of the emulator's framebuffer around 30 times a
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second. This saves us from changing the internal video routines (they
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assume direct access to an 8bit framebuffer), and it's a heck of a lot
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faster than trying to do an XPutPixels() on each change. The X
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frontend only currently works for 8bit displays. Make sure you run it
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using a mode (specified in XF86Config) that has a bit depth of 8 (not
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16 or greater).
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2) We now build three versions of the emulator: svideo_320x200,
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xvideo_320x200, xvideo_640x400. The last one really isn't 640x400 for
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optimization reasons (568x384) although it probably should be...
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Sorry, but there's no support for switching resolutions on the fly, we
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ifdef it in with a new define "_640x400".
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3) Provided 80column support for the 640x400 X version. Now you
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can PR#3 (running as //e) and get 80 columns. This change required
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a resolution of at least 560 horizontal pixels (Apple //e specs).
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4) Both SVGA and X versions need to be suid root (for PC speaker port
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access and SVGA stuff). But both versions now give up root access
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during video initialization. This means that disk access is now done
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as *you* (not root) even when g(un)zipping images for loading.
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Before images would be g(un)zipped as root. There was something about
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this that made me uneasy... Now it's up to you to give the
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appropriate user/group permissions to your disk image repository.
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I make no claim about the security fitness of this emulator. See the
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other READMEs and files for more information/disclaimers.
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5) Did a 180 on the disk image selection menu. <RET> now tries
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to open disk images as read-only, 'W' for both read-write.
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Of course this will only work if you have the correct
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file permissions set (see 5 above). I find this more convenient b/c
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I play alot of the arcade games where you don't ever save game state.
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6) Removed the disk "Information" submenu. I never use it. Do you?
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Changes in 0.05: (Feb 98)
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-------------------------
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Version 0.05 - Aaron Culliney <chernabog@baldmountain.bbn.com,
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aculline@bbn.com>
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My code changes have nothing to do with my employer, GTE
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Internetworking, BBN Technologies. They were written completely on my
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own time and on my own machine.
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1) Added support for 65c02 instructions. The programs that
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I've tested which use them work just fine.
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2) Added support for 128k //e EXCEPT 80 column mode, B/W
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DHIRES mode, and MouseText character set. The two unimplemented video
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modes require major changes to current video routines, thus a next
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version... New supported images are copy ii+ 9.0, diagnostics //e,
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marble madness, airheart, legend of blacksilver, pirates!...
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3) Fixed some old problems with HIRES colors being off around
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byte edges in interpolated/color modes. but we still give you the
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option to use these "lazy" modes since emulation is faster with them
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enabled...
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4) You now have several new options in your .apple2 file. I
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suggest either copying the distributed one over your existing one, or
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merging the changes in.
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5) Fixed some potential security bugs where a user could
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traverse into sensitive directories by using the disk selection
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interface. The current emulator version is not guaranteed to be
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foolproof since it has to be installed suid root for normal users to
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use it. Sysadmins should take extra precautions as they see fit.
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6) Added and deprecated some options in the debugger interface
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to support the new 128k //e. see the DEBUGGER file for more info.
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DEBUGGER support is not default compiled in.
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7) added some extra options to the .config file that you build
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into the emulator. One big one: a way to set the max delay count in
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the emulator to bring Apple ][ emulation rates down to normal on high
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end pentiums!... 100 is the default delay rate (which works just fine
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for low end 386-Pentium100's).
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Changes in 0.04: (June 97)
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-----------------------------
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Version 0.04 - Aaron Culliney <chernabog@baldmountain.bbn.com,
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aculline@bbn.com>
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My code changes have nothing to do with my employer, BBN. They were
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written completely on my own time and on my own machine.
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1) Added PC Joystick Support. You must have the joystick
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kernel loadable module 0.8.0 correctly configured and installed to use
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this feature.
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2) Changed the way the emulator handles the language card
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memory space. We no longer patch rom/ram on lc_c08x functions. I did
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this because under certain conditions the previous versions of the
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emulator would run a lot slower. Now you may notice the emulator
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running a tad slower in general (because of the range checking), but
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Ultima 4 and Arctic Fox (formerly unplayable) should now be just fine.
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3) Changed the way the .apple2 preferences file is handled. I
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Did this mainly to support saving of PC Joystick parameters, and I'd
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rather let flex do the dirty work of regexp matching.
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4) Changed the disk interface and main interface menu. In the
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disk interface, you can now see which disk is in the drive, and with
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what permission <rw1> for read/write drive 1. You can eject this disk
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or force it to be write-protected. In the main menu screen, you have
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more parameters to play around with (associated with the pc joystick
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add-on).
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5) Disk image files are now opened with user privileges, not
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root privileges, even though the program is suid root. gzip'ed disks
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are still handled as root, but we no longer call the unsecure system()
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to do the dirty work. Instead we fork and directly exec "/bin/gzip".
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5) General bug fixes and enhancements.
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Changes in 0.03: (Jan-Feb 97)
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-----------------------------
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Version 0.03 - Aaron Culliney <chernabog@baldmountain.bbn.com>
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My code changes have nothing to do with my employer, BBN. They were
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written completely on my own time and on my own machine.
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1) Fixed language card initialization bug.
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2) Improved colors. Seems that Greens and purples we're
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switched around. The colors are still slightly off, and color
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interpolation seems screwy (TODO).
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3) Added apple II debugger interface. This requires flex
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version 2.5.2. (You can compile this into the program or leave it
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out.) Type F7 to get into the debugger and type a '?' to see a
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command summary. Check out the file DEBUGGER for more info.
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4) Added support for standard 232960 .nib disks.
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5) Added a more intuitive interface to selecting disks. You
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can now traverse forward and backward in a directory hierarchy with
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the base directory set by your .apple2 config file.
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6) changed keymap: shift-p = @ and shift-N = ^, just like my
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old II+ keyboard.
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Changes in 0.02: (8 Dec 1995)
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-----------------------------
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* Ctrl-C will not kill the emulator with newer SVGAlib. Please
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use SVGAlib > 1.2.9 for best results.
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* Rudimentory REPT key handling. It's too fast though.
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* The assembler files now compiles under ELF.
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* Not every SVGA card can do page-flipping. The emulator now
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checks for this and fall back to VGA if it can't.
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* Keymap has changed a bit. Backspace and ']' is now <-, '[' is
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REPT.
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* Disk extension changed to the more common .dsk (and a2d.info to
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dsk.info).
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Changes in 0.01: (9 Oct 1994)
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-----------------------------
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* Standard VGA support with some performance degradation.
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(When page flipping occurs, 64K memory banks are swapped;
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hence the performance degradation.)
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* -vga flag switch added, e.g. "apple2 -vga"; forces standard
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VGA detection.
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* (Trident) TVGA8900 page flipping bug fixed.
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* File names may now contain any character codes. (The previous
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version had some problems with compressing/uncompressing file
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names with extraordinary characters.)
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* Diskette selection retains last cursor position.
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