Here is PX68k, a Sharp X68000 Emulator. The X68000 is a Japanese computer, and it feature some awesome arcade conversion (like R-Type, Rygar, Gradius...).

The code has been slightly modified (diff sources in the PND). It use GLES 1.1 for the display (so it use Hardware scaling), but also use Texture Streaming, to still have maximum speed.

The JoyKey button as been redirected to {X} and {B} Pandora buttons.

Of course, you need ROMS file for the Emu to start. You need 2 files, to be put in appdata/px68k. It's cgrom.dat and one of iplrom.dat, iplromco.dat, iplrom30.dat or iplromxv.dat

Use F11 to quit or F12 for the System Menu.

History log
=========
Build 09
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* Added update M68k and Cyclone CPU emu from retroarch fork
* Pandora build use Cyclone CPU
* Configurable CPU Emulator speed
* Configurable Ram Size
* Translate most menu items to English

Build 08
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* Fixed Scanlines

Build 07
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* Added option (in F12 screen) for (faked) Scanlines
* Added cgrom.dat to the rom package.

Build 06
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* Added option (in F12 screen) for Stretched anamorphic display
* Added option to copy iplromxv.dat rom if none is found

Build 05 and earlier: see main thread

A thread is open here: http://boards.openpandora.org/topic/17954-px68k-sharp-x68000-emulator/

Sources: https://github.com/ptitSeb/px68k