Quite the update from developer notaz. Reintroducing PicoDrive — the all-retro, all-sega emulator for your PSP.

Notaz’ PSP port originates from Dave’s PicoDrive 0.30 code for the Pocket PC. The Mega / CD emulation is roughly based on tephane Dallongeville’s Gens.

PicoDrive v1.50/1.51 changes:

• Added some basic support for Sega Pico, a MegaDrive-based toy.
• Added proper support for cue/bin images, including cdda playback.
• .cue sheets with iso/cso/mp3/wav files listed in them are now supported too (but 44kHz restriction still applies).
• Added bin_to_cso_mp3 tool, based on Exophase’s bin_to_iso_ogg. The tool can convert .cue/.bin Sega CD images to .cso/.mp3.
• Greatly improved Sega CD load times.
• Changed how scheduling between 68k and z80 is handled. Improves performance for some games. Credits to Lordus for the idea.
• YM2612 state was not 100% saved, this should be better now.
• Improved renderer performance for shadow/highlight mode.
• Added a hack for YM2612 frequency overflow issue (bleep noises in Shaq Fu, Spider-Man - The Animated Series (intro music), etc.). Credits to Nemesis @ spritesmind forum. Works only if sound rate is set to 44kHz.
• Implemented some sprite rendering improvements, as suggested by Exophase. Games with lots of sprites now perform better.
• Added better idle loop detection, based on Lordus’ idea again.
• “accurate timing” option removed, as disabling it no longer improves performance.
• “accurate sprites” was removed too, the new sprite code can properly handle sprite priorities in all cases.
• Timers adjusted again.
• Improved .smd detection code.
• Minor general optimizations and menu improvements.
• Fixed a bug in Sega CD savestate loader, where the game would sometimes crash after load.
• Fixed a crash of games using eeprom (introduced in 1.40b).
• fixed suspend/resume (hopefully for real).
• Improved bin_to_cso_mp3 tool, it should no longer complain about missing lame.exe even if it’s in working dir.
• Fixed a regression from 1.50, which caused slowdowns in Final Fight.
• Fixed some regressions from 1.50 related to sprite limit and palette handling (caused graphical glitches in some games).
• Added ABC turbo actions to key config.
• Some other minor adjustments.

Download: PicoDrive v1.51

- source: dcemu

Here’s one you may have possibly forgotten about, or perhaps you’ve never seen before… Step back into the good ol’ SEGA Genesis/CD days with developer Notaz’ PicoDrive version 1.40b.

This release is primarily bug fixes and whatnot; don’t expect any speed increase.

PicoDrive v1.40b changes:

• Fixed sprite masking code. Thanks to Lordus for explaining how it works.
• Added “disable sprite limit” option.
• Added black level adjustment to display options.
• Changed reset to act as ’soft’ reset.
• Added detection for Puggsy (it doesn’t really have sram).
• Some small timing adjustments.
• Added support for SVP (Sega Virtua Processor) to emulate Virtua Racing. No recompiler for PSP version though.
• Changed config file format, files are now human-readable. Game specific configs are now held in single file (but old game config files are still read when new one is missing).
• Fixed a bug where some key combos didn’t work as expected.
• Adjusted fast renderer to work with more games, including VR.
• Fixed a problem where SegaCD RAM cart data was getting lost on reset.
• PicoDrive now comes with a game config file for some games which need special settings, so they should now work out-of-the-box. More games will be added with later updates.

Download: PicoDrive 1.40b

- source: dcemu