Very nice, really.
Thanks a lot for this one.

hello, I have released a new version of the Genesis Plus port for Gamecube. You can access the changelog and source code here (don't know how to attach file in this forum): http://www.tehskeen.com/forums/showthread.php?p=14299#post14299 Besides the FM timers fixes, I also added serial eeprom emulati...

Okay, tested it and I think most problems are fixed with this new build: - Chiki Chiki Boys: fixed - Castle of Illusion: fixed - Alisia Dragoon: fixed - Columns: fixed - Contra: fixed - Rocket Knight Adventures: fixed - Sagaia & Darius II: fixed - Deadly Moves: you can hear sound playing with C...

That's it ;) I didn't create a second table but rather use the sound_tbl one in system.c, that means, in function "system_frame", I replaced the call to "fm_update_timer" by: if (line == 261) fm_update_timers(((snd.buffer_size-sound_tbl[line]) * 1000000)/snd.sample_rate); else fm...

By the way, i finally discover why some games (Castle of Illusion, Quackshot ) didn't have in-game FM music. This occurs in each Genesis Plus port apparently (i was working on the Gamecube's port made by Softdev, see http://www.tehskeen.com/ ). The problem was in the sound.c code, where it seems th...

I think this is due to the sample rate used in the DC port (12000 ?), which is also used to init the genesis audio and the sound buffers. The Timer increment (64us at each scanline) only works for high sample rate (22500 and higher), I think. As these timers are used by the Z80 program to synchronis...

I've been working on the DC port for quite a bit. I made these changes and sound still seems to be broken, at least in mickey (the only one of those games I have). Before making the changes, the sound simply isn't there, but afterwards it only works from time to time. Finally, I managed to understa...

In fact, i'm not pretty sure about what I did since in all emulator source code I've read, the FM read register is handled the same as Charles Mc Donald did That is: bit 0 = Timer A overflow bit 1 = Timer B overflow Perhaps it's rather an error in the documentation and the change I've made only work...

By the way, i finally discover why some games (Castle of Illusion, Quackshot ) didn't have in-game FM music. This occurs in each Genesis Plus port apparently (i was working on the Gamecube's port made by Softdev, see http://www.tehskeen.com/ ). The problem was in the sound.c code, where it seems th...

By the way, i finally discover why some games (Castle of Illusion, Quackshot ) didn't have in-game FM music. This occurs in each Genesis Plus port apparently (i was working on the Gamecube's port made by Softdev, see http://www.tehskeen.com/ ). The problem was in the sound.c code, where it seems tha...

I've got no problems with Wonderboy 6 But Wonderboy 5 use a custom SRAM technique (internal EEPROM), different than others roms so the genesis plus code need to be modified to disable sram reading/writing at initial rom detection (when detecting sram.custom) i made the change in genesis plus gamecub...

hum, I compared the frame "updater" task in genplus code (including yours and softdev's one which are actualy the same) with the one in Stef's Gens and they are so much different :!: could it be possible, as you include cpu core from gens, to include also the main emulator engine (i mean t...

ok, thank you for your fast answer
so I guess there is nothing much to do yet in order to correct this ?

as the softdev's emu was open source, I hoped modifying the source code would solve the problem
but i'm not not sure where the part for timer & interrupt from the original code is...

Hi, I find this topic while looking for compatibility issue with genplus (in fact, not this one but the version for gamecube that softdev mades) The thing is, I noticed that some games (especially Castle of Illusion and Quackshot) works with no sound in your PRV3 release ... and since I encounteer t...