You can also load games via the command line without the debugger.

In that it will not recognise the MD+ code used to patch address lines to play back audio files, but the entire Streets of Rage 2 patch was successfully coded by infinest using the Regen emulator and its debugger while referencing the MegaSD dev manual. Regen is one of them (link below), but obviously it is not MD+ capable. MAME's debugger is not to everyone's tastes, but there are alternatives. It is also preferable that your audio files contain no spaces. The game name and CUE file can be named anything, but they should have no spaces and should be placed in the root of your MAME folder. Using Streets Of Rage 2 as an example below, navigate to your MAME directory and input the relevant commands as described in the code box above: (Use 'genesisplus' for US NTSC 60Hz games, 'megadrijplus' for JP NTSC games, and 'megadrivplus' for PAL 50Hz games) Loading games with command line and debugger:Ĭode: mametiny genesisplus -cart game.md -cdrom game.cue -debug There are two methods of loading games using MAME, either by command line (development & playing) or using the GUI itself (playing). As long as your audio tracks loop correctly in an audio editor and the values are correct in the CUE file, they will have no issues when played back on a MegaSD with real hardware. The longer the track the more 'out' it will sound. There is only one issue with track looping as MAME runs at 75Hz internally when reading sector data, which will display an issue where the timing will be slightly off due to playing games that run at 60Hz and 50Hz, therefore the specified loop will trigger earlier than intended and will appear to sound incorrect, depending on the length of the audio track.

The core functions are all there, track looping and fading. if or when eke finishes implementing it more accurately in to Genesis Plus GX, as per his enquiry last December). It's not perfect, but it serves as a competent platform for playing and developing MD+ games until a better solution comes along (i.e. This has never been publicly released, but I think it's about time that it was to encourage development of games using the, in my opinion, superior and more modern MD+ format (you will still need an understanding of 68k assembly and Mega Drive/Genesis hardware to accomplish this, this is not a tutorial for simple injection of code that anyone can do). Download links are at the bottom of the post.

Mame command line options