MAME is an open source project, which give the chance to test code changes.

Input mod

Current version: 0.133

This is a modified version of MAME with some modifications aimed to enhance the TGM experience and WolfMAME's inpview modifications.

Installing

Differences from original MAME

Only runs tgmj, tgm2 and tgm2p
These games are configured to 4-way stick, which makes MAME favor the last pressed direction
For instance, [left; left+down; down] will send down to the game on the second input sequence
Polls input much more frequently and before executing the emulated CPU time slices (this is a brute force modification)
TODO: poll input when the emulated machine polls input (this is the ideal modification)
Pressing opposite directions favors the most recently pressed one, and only locks if both become pressed simultaneously
Exception: if up+down become pressed simultaneously, it favors up

Notes

The only difference between mametgm.exe and vmametgm.exe is that the former is compiled using GCC and the latter using Visual C++ 2005
Most people (including me) report that the Visual C++ version is faster
The Linux and Mac OS X versions are based on SDLMAME
It maked tgmj less playable due to the introduced processing overhead, but tgm2 and tgm2p are fine
It produces/reads .inp files incompatible with the original MAME
Input Viewer from WolfMAME: try -inpview 1

Modded MAME