Вышел PicoDrive v1.51b, вроде есть поддержка MegaCD

1. Fixed broken code within
Memory_amips_r5900.s, which caused some
games (Namely SSFII) to be broken. The
contents of some registers were getting lost.
2. Compiled this port with a fixed up PS2SDK
(Refer to the PS2SDK updates made today).
3. Added support for the 240P video mode
(640x224).
4. Redesigned the menu to use 320x224 instead
of 320x240, since the PlayStation 2's NTSC
mode doesn't support 240/480 lines without
some ugly, uneven scaling.
5. PAL games will now use a 320x240 frame
buffer instead of 320x232. I thought that the
PAL Megadrive screen had a resolution of
320x232.
6. Fixed saving of the video/display settings
(VSYNC setting etc). As usual, the video
mode setting will NOT be saved.
7. Changed the progressive video mode setting
into a video mode selector. Allowed options
are the NTSC, PAL, 480P and 240P modes.
8. The frame buffer will no longer be stretched
to fit the video mode (Unless the screen isn't
large enough to display the video on), to
avoid the results of fractional scaling.
Hence, the 480P or PAL video modes should
be used for playing PAL games, since these
modes have a high-enough resolution to
avoid needing to scale the screen.
9. Replaced calls to
gsKit_prim_sprite_texture_3d with a
customized drawing function, since
gsKit_prim_sprite_texture_3d seems to
perform a series of weird calculations.
Those calculations seem to be for achieving
"pixel-perfect" sprite drawing, as
demonstrated by jbit... but that doesn't seem
to work well with nearest filtering!

1. Compiled this port with a fixed up PS2SDK
(Refer to the PS2SDK updates made today).
2. Game-specific configuration file saving has
been fixed in #1.
3. Fixed the saving of the VSYNC mode setting
(Appears to be a bug in PicoDrive v1.51
actually).
4. Fixed the directory scanning function of the
main menu to be compatible with
USBHDFSD (Root directory doesn't have the
CWD entry).
5. Fixed the directory traversal code to be
compatible with PFS (The PFS module
doesn't allow directory listing if the
directory's name isn't succeeded by a slash
character).
6. Added letterboxing for the badly aligned
480P screen (So that the 640x480 screen
will get displayed nicely in 720x480).
7. The emulator will now assume that the
ROMs are located on the same device that
its stored on.
8. HDD support has been revamped: It's now
supported only under #5 (if the emulator is
stored on the same partition as the ROMs),
and will only work properly if the launcher
passes the path to the emulator properly. As
usual, launching the emulator off a
partition on the HDD with uLaunchELF
will not be supported. FHDB, on the other
hand, is fine.
9. Fixed the deletion of the temporary
configuration files and the creation of the
dumps folder (Only used for debugging).
10. Updated the combo detection code of the
emulator to identify that the left thumbstick
can't be used in a button combination (Fixes
the inability to use the left thumbstick in
place of the D-pad).