MMC3
The MMC3 chip, soldered onto a PCB containing Super Mario Bros. 3 and others.
* Manufacturer: Nintendo
* Games used in: Mega Man 3, Super Mario Bros 2, Super Mario Bros. 3 et al.
The MMC3 was Nintendo's most popular MMC chip. It comes in MMC3A, B, and C revisions. The MMC3 added a scanline based IRQ counter to make split screen scrolling easier to perform (mainly to allow the playfield to scroll while the status bar would remain motionless at the top or bottom of the screen), along with two selectable 8KB program ROM banks and two 2KB+four 1KB selectable character ROM banks.[5]