Hi Richard, Is the clock output of the SMS expansion port 3.57Mhz or 8Mhz? I ask this because Sega overclocked the YM2413 to 8MHz on SMS. (The datasheet says it should run at 3.57Mhz)
If you are running the YM2413 at 3.57Mhz probably all notes will sound at higher frequency than they should. You should compare both Aleste1 versions (SMS and MSX2) to test if you're running at the right clock. At 8Mhz the musics will be equal, but at 3.57Mhz it will sound horrible. The MSXs drivers on MESS is suffering of this effect, because yhe YM2413-okazaki is overclocked to 8MHz, probably to match the SMS driver... Regards, FRS --- Richard Atkinson <[EMAIL PROTECTED]> wrote: > I've finished the schematic of my MSX-MUSIC adaptor for the Sega Master > System, and put it online. There's a short description of it in the S8 > dev > forum (third post!) and I've included the direct link here also. > > http://www.smspower.org/dev/forum/index.shtml > > and > > http://student.cusu.cam.ac.uk/~rga24/computer/projects/adaptor.pdf > > Comments / bugfixes / suggestions welcome. > > > Richard > > -- > For info, see http://www.stack.nl/~wynke/MSX/listinfo.html ===== _________________________________________________________________________ [EMAIL PROTECTED] Uzix Rulez! http://uzix.sf.net _________________________________________________________________________ __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ -- For info, see http://www.stack.nl/~wynke/MSX/listinfo.html
