Release 7, Preview 3
Release 7 introduces the following new features:
* Mega Drive
Plugins v1.0.0. This major update to the plugins system adds support for external plugins (.dll on Windows, .so on Linux), as well as support for more than just rendering plugins.
* doc/mdp/ contains the MDP Interface Specifiction Version 1.0.0. This document is licensed under the GNU Free Documentation License v1.3.
* A new manual for Gens
/GS has been created. It is available in doc/manual/.
* The Game Genie functionality has been moved to an MDP plugin. It now supports 8-bit, 16-bit, and 32-bit patch codes, and uses a new patch code file format. Old patch code files are supported for loading; however, they will be written in the new format when saved. Later versions will add support for patching CPU address spaces other than the main MC68000.
* New MDP Plugin: VDP Layer Options. This lets you adjust the visible layers on screen, so e.g. you can hide sprites, swap scroll priorities, and lock the palette to prevent color changes.
* New MDP Plugin: Sonic Gens
. This lets you view various information in memory in several Sonic games. Sonic Gens
was originally written by LOst as a standalone version of Gens
* New renderers:
o EPX (ported from Gens
o EPX Plus (ported from Gens
o Super 2xSaI
(ported from Gens
o Super Eagle (ported from Gens
o Blargg´s NTSC filter for MD
* [Win32] Ported the GDI video backend from Gens
Plus. It still has a few bugs, but it mostly works.
* Extended controller configuration format. The new configuration format allows for up to 128 axes, 256 buttons, and 64 POV hats, whereas the old configuration format only allowed for 6 axes [5 axes on Win32], 112 buttons, and 4 POV hats. This mainly affects the Linux version, since Linux usually reports all axes as axes instead of mapping some axes to POV hats, and some newer controllers (e.g. the Xbox 360 controller) have more than 6 axes. Older configurations are automatically updated to use the new controller configuration format.
* The reverse-engineered 32X
firmware, written by DevSter, is now included in Gens
/GS. If you do not have the original Sega 32X
firmware files, the reverse-engineered ones are used instead.
* Added SH2 DMA support for PWM audio. Thanks to Joseph Fenton for submitting a patch.
* [Win32] Joysticks connected after loading Gens
/GS will now be detected in the Controller Configuration dialog.
* WAV dumping has been reimplemented.
* ROM History now caches the ROM type (MD/MCD/32X
), so it doesn´t have to check the ROM type every time the ROM History menu is rebuilt. This improves performance significantly if some ROM images were loaded from network shares.
* ROM History now keeps track of compressed files inside of multi-file archives. For example, if you have a 7z archive containing several different versions of a game, selecting version 1 will result in a ROM History entry for that specific version, and selecting version 2 will result in another ROM History entry.
* Added initial support for the "Palette Select" bit in VDP register 0. If the "Palette Select" bit is cleared, only the LSBs of each color component in CRAM is used to determine the colors to display, resulting in a maximum of 8 colors onscreen. This isn´t very useful, but it´s more accurate.
* SRAM can now be disabled in the Options menu. This fixes Puggsy, which checks for the existance of SRAM and prevents the user from advancing past a certain point if it exists. (Puggsy uses a password system, not SRAM.)
* Improved PWM scaling algorithm, provided by Chilly Willy on the Sonic Retro forums.
* A new command line option, "--boot-cd", can be specified to tell Gens
/GS to boot from an actual SegaCD CD-ROM on startup.
* [Unix] Improved VSync support with the OpenGL
backend. Both the MESA and SGI swap control methods are now supported.
* The video subsystem now supports fallbacks. For example, on the Linux version, if SDL
is selected but OpenGL
isn´t available, it will simply revert back to SDL
instead of crashing. As an added bonus, this allows for Gens
/GS to start up properly on Windows NT 4.0, since the default backend on Win32 is DirectDraw 4, but NT4 doesn´t support it. Instead of crashing, it will fall back to the GDI backend.
/GS no longer changes non-alphanumeric characters in SegaCD game names to spaces. This may cause some games to have different names, which will prevent their BRAM files from being loaded properly. If you have any of these games, you will need to rename the BRAM files in order to get them to load correctly.
* [Unix] If a game has a Shift-JIS encoded title in the Japanese title field and the country code is set to Japan, the title will be converted to the system´s native locale, e.g. UTF-8. (Win32 support for this feature will be added once Gens
/GS fully supports Windows´ Unicode implementation.)