wraggster
February 11th, 2013, 22:18
via http://www.aep-emu.de/
DGen/SDL (http://dgen.sourceforge.net/) is a Sega Genesis (http://www.aep-emu.de/Sections-req-viewarticle-artid-24.html) emulator for Windows and Linux / SDL (http://www.libsdl.org/).
Quote:
--------------------------------------------------------------------------------
WHATīS NEW?
--------------------------------------------------------------------------------
v1.32 <- v1.31
* Debugger: the displayed instruction after hitting a breakpoint was wrong,
this is now fixed.
* Debugger: the disassembler doesnīt assume instructions have a fixed size
anymore.
* Debugger: fixed breakpoints support.
* Debugger: implemented the ability to step over multiple instructions.
* Debugger: implemented set(b|w|l|r) comands to read/write memory and
registers.
* Debugger: added M68K instructions counter (can be displayed with the "reg"
command).
* Debugger: added M68K instructions tracing to display instructions while
they are executed.
* Debugger: other miscellaneous fixes (such as reverse-i-search flickering in
linenoise).
* Fixed 6-button emulation that wasnīt working correctly.
* OpenGL: enabled byte-swapping by default for 32-bit textures on big endian
machines so users donīt have to use bool_swab.
* Fixed a crash (infinite loop) while exiting.
* Imported Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) 0.099, a highly optimized M68K core written in pure
ARM assembly. It is much faster than Musashi, especially on low-spec
machines such as the Raspberry Pi.
* Imported DrZ80, a Z80 (http://de.wikipedia.org/wiki/Zilog_Z80) core also written in pure ARM assembly (from
PicoDrive (http://www.aep-emu.de/Web_Links-req-visit-lid-142.html)). A tiny bit faster than CZ80.
* Fixed various crashes with Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) and DrZ80 which tend to choke on
invalid code.
* Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) and DrZ80 are now the default CPU emulators on ARM-based
machines.
* Fixed remaining CPU core switching bugs.
* Implemented MJazz, a feature present in the original Win32 version of DGen.
Enabling bool_mjazz initializes three FM chips instead of one. Each
additional chip runs at twice the rate of the previous one, causing the
MJazz sound effect.
* Added autogen.sh to make everyone happier.
* Updated Musashi to version 3.31. This new version fixes many games.
* Made DGen/SDL (http://www.libsdl.org/) more responsive on slow machines by checking input events
after each dropped frame.
* Double-buffering can now be disabled, useful on slow machines
(bool_doublebuffer).
* Added an optional separate thread (bool_screen_thread) for displaying
frames. Only useful on slower machines where flipping video buffers takes
time, especially when V-sync is enabled and doing so blocks DGen/SDL (http://www.libsdl.org/) until
the next frame without consuming CPU time (such as the case of Dispmanx on
the Raspberry Pi when bool_doublebuffer is also enabled).
* Optimized Musashi to access memory regions directly without going through
callbacks. This idea was taken from Genesis (http://www.aep-emu.de/Sections-req-viewarticle-artid-24.html) Plus GX. Although not as fast
as Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) on ARM, it is noticeably faster than before.
* VDP: implemented VDP interrupts properly.
* VDP: added the ability to switch VDP planes on and off
(bool_vdp_hide_plane_a, bool_vdp_hide_plane_b, bool_vdp_hide_plane_w,
bool_vdp_hide_sprites).
* VDP: improved sprites priority bit handling to fix sprites glitches in a
lot of games (Streets of Rage among others). This unfortunately makes
emulation slower.
* VDP: implemented sprites limitations (per-line, per-frame, dot overflow),
and enhanced masking (DGen/SDL (http://www.libsdl.org/) now passes Nemesisī sprite masking test
ROM).
* VDP: implemented sprites boxing, the ability to draw boxes around sprites
for debugging purposes.
* VDP: implemented 2-cell vertical column scrolling mode. This fixes video
glitches in several games (i.e. Psycho Pinball, Gunstar Heroes, Sonic 3).
* VDP: optimized tiles blitting (but itīs hard to notice).
* VDP: implemented sprite overflow and collision bits.
* VDP: forced data offset from the name table to wrap at 8K to fix video
glitches in some games games (such as Dragon Slayer I & II).
* Updated StarScream to version 0.26d (was previously 0.26a).
* Joysticks support has been reworked. They are now managed like the
keyboard, with similar names in the configuration file (joy_* instead of
key_*). Because of this, some configuration variables have been removed and
no longer work in DGen/SDL (http://www.libsdl.org/) 1.32. Configuration files must be updated
manually.
* Implemented the ability to bind/unbind keys and joystick/joypad buttons to
arbitrary commands using bind_* variables. This replaces the similar
feature that only worked with joystick buttons.
* "calibrate_js" has been renamed "calibrate" and now works with both
keyboard and joystick events. Makes controllers configuration
straightforward.
* Implemented "bool_buttons" to display each pressed button in the status
bar. Helpful when configuring buttons manually.
* Documentation: updated manual pages for all of the above.
* Documentation: more files have been converted to Doxygen.
* Screenshot files names are now prefixed with the ROM name so they are
easier to find.
* Emulation bugfixes (code/address register cleared when writing a VDP
register, randomization of unused BUSREQ bits, VDP reset).
* Miscellaneous bugfixes (libarchive detection during configure, forced
flushing of debugger output, autoconf fixes, missed video resize events
during init).
DGen/SDL (http://dgen.sourceforge.net/) is a Sega Genesis (http://www.aep-emu.de/Sections-req-viewarticle-artid-24.html) emulator for Windows and Linux / SDL (http://www.libsdl.org/).
Quote:
--------------------------------------------------------------------------------
WHATīS NEW?
--------------------------------------------------------------------------------
v1.32 <- v1.31
* Debugger: the displayed instruction after hitting a breakpoint was wrong,
this is now fixed.
* Debugger: the disassembler doesnīt assume instructions have a fixed size
anymore.
* Debugger: fixed breakpoints support.
* Debugger: implemented the ability to step over multiple instructions.
* Debugger: implemented set(b|w|l|r) comands to read/write memory and
registers.
* Debugger: added M68K instructions counter (can be displayed with the "reg"
command).
* Debugger: added M68K instructions tracing to display instructions while
they are executed.
* Debugger: other miscellaneous fixes (such as reverse-i-search flickering in
linenoise).
* Fixed 6-button emulation that wasnīt working correctly.
* OpenGL: enabled byte-swapping by default for 32-bit textures on big endian
machines so users donīt have to use bool_swab.
* Fixed a crash (infinite loop) while exiting.
* Imported Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) 0.099, a highly optimized M68K core written in pure
ARM assembly. It is much faster than Musashi, especially on low-spec
machines such as the Raspberry Pi.
* Imported DrZ80, a Z80 (http://de.wikipedia.org/wiki/Zilog_Z80) core also written in pure ARM assembly (from
PicoDrive (http://www.aep-emu.de/Web_Links-req-visit-lid-142.html)). A tiny bit faster than CZ80.
* Fixed various crashes with Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) and DrZ80 which tend to choke on
invalid code.
* Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) and DrZ80 are now the default CPU emulators on ARM-based
machines.
* Fixed remaining CPU core switching bugs.
* Implemented MJazz, a feature present in the original Win32 version of DGen.
Enabling bool_mjazz initializes three FM chips instead of one. Each
additional chip runs at twice the rate of the previous one, causing the
MJazz sound effect.
* Added autogen.sh to make everyone happier.
* Updated Musashi to version 3.31. This new version fixes many games.
* Made DGen/SDL (http://www.libsdl.org/) more responsive on slow machines by checking input events
after each dropped frame.
* Double-buffering can now be disabled, useful on slow machines
(bool_doublebuffer).
* Added an optional separate thread (bool_screen_thread) for displaying
frames. Only useful on slower machines where flipping video buffers takes
time, especially when V-sync is enabled and doing so blocks DGen/SDL (http://www.libsdl.org/) until
the next frame without consuming CPU time (such as the case of Dispmanx on
the Raspberry Pi when bool_doublebuffer is also enabled).
* Optimized Musashi to access memory regions directly without going through
callbacks. This idea was taken from Genesis (http://www.aep-emu.de/Sections-req-viewarticle-artid-24.html) Plus GX. Although not as fast
as Cyclone 68000 (http://de.wikipedia.org/wiki/Motorola_68000) on ARM, it is noticeably faster than before.
* VDP: implemented VDP interrupts properly.
* VDP: added the ability to switch VDP planes on and off
(bool_vdp_hide_plane_a, bool_vdp_hide_plane_b, bool_vdp_hide_plane_w,
bool_vdp_hide_sprites).
* VDP: improved sprites priority bit handling to fix sprites glitches in a
lot of games (Streets of Rage among others). This unfortunately makes
emulation slower.
* VDP: implemented sprites limitations (per-line, per-frame, dot overflow),
and enhanced masking (DGen/SDL (http://www.libsdl.org/) now passes Nemesisī sprite masking test
ROM).
* VDP: implemented sprites boxing, the ability to draw boxes around sprites
for debugging purposes.
* VDP: implemented 2-cell vertical column scrolling mode. This fixes video
glitches in several games (i.e. Psycho Pinball, Gunstar Heroes, Sonic 3).
* VDP: optimized tiles blitting (but itīs hard to notice).
* VDP: implemented sprite overflow and collision bits.
* VDP: forced data offset from the name table to wrap at 8K to fix video
glitches in some games games (such as Dragon Slayer I & II).
* Updated StarScream to version 0.26d (was previously 0.26a).
* Joysticks support has been reworked. They are now managed like the
keyboard, with similar names in the configuration file (joy_* instead of
key_*). Because of this, some configuration variables have been removed and
no longer work in DGen/SDL (http://www.libsdl.org/) 1.32. Configuration files must be updated
manually.
* Implemented the ability to bind/unbind keys and joystick/joypad buttons to
arbitrary commands using bind_* variables. This replaces the similar
feature that only worked with joystick buttons.
* "calibrate_js" has been renamed "calibrate" and now works with both
keyboard and joystick events. Makes controllers configuration
straightforward.
* Implemented "bool_buttons" to display each pressed button in the status
bar. Helpful when configuring buttons manually.
* Documentation: updated manual pages for all of the above.
* Documentation: more files have been converted to Doxygen.
* Screenshot files names are now prefixed with the ROM name so they are
easier to find.
* Emulation bugfixes (code/address register cleared when writing a VDP
register, randomization of unused BUSREQ bits, VDP reset).
* Miscellaneous bugfixes (libarchive detection during configure, forced
flushing of debugger output, autoconf fixes, missed video resize events
during init).