User:Freem/Sound Drivers/Mr.Pac

The Mr.Pac Sound Driver exists in two versions:
 * (January 8th, 1990)
 * (February 14th, 1990)

The information on this page primarily deals with the first version of the driver as it appears on the SM1 chip.

Origin
It is likely that this sound driver is based off of the one found in Beast Busters, which contains this signature: SOUND CONDUCTER Ver 1.0a for YM2610(OPNB) by Mr.Pac hector Ber.1989/06/17

Sequence Data Header Formats
Some values need verification.

Other Notes

 * Timer A seems to be used for sound effect playback. (The Timer A value is also stored in  (lower 2 bits) and   (upper 8 bits) in the SM1/BIOS driver)
 * Timer B is used as the tempo for music playback. (The Timer B value is also stored in  in the SM1/BIOS driver)