DS2x86 by Patrick Aalto is a PC emulator for Nintendo DS. It’s purpose is to allow you to run old DOS games on your Nintendo DS game console. DS2x86 is a port of DSx86 port using the SuperCard DSTwo’s MIPS processor, therefor it will just run with such a card.

Changes:

* New TPMXScale and TPMYScale ini file parameters. These can be used to adjust the TouchPad Mouse scaling for each game. The default values (when the parameters have not been given in the INI file) are 1.0 for both. You need to experiment with different values to find the best scaling factor for each game. Note that changing these might still not make the TPM work in a certain game, as the game might not use the mouse in a way that is compatible with the touchpad mouse emulation. These new parameters should help in some games, though.
* The key repeat function in the keyboard emulation was fixed so that it repeats the actual key that was pressed, not just the non-enhanced version of the key. This will help with the stuck cursor key problem in Frontier.
* The graphics mode detection code has been enhanced, so that both methods of entering 240-row Mode-X graphics modes (either 320×240 or 360×240 as in Albion) will be detected, and the correct graphics mode initiated.
* The program size has increased somewhat. The size increase is due to the new paging / virtual memory -enhanced opcode handlers. This work is still in progress and thus games that use virtual memory will still not work. The updated opcodes should work like before, and the slowdown caused by the new code should be very marginal, but let me know if you find something that worked before but does not work any more. There is a chance that I have broken something when doing the virtual memory support changes.

http://dsx86.patrickaalto.com/