Dr. Mario (NES)/RAM map

The following article is a RAM map for Dr. Mario (NES).

This data is relevant to Dr. Mario (JU) [t1] and may not be correct for other dumps.

Table

RAM Address	Information
0x0043	Frame counter.
0x0046	Mode.
0x0065	Game option cursor position.
0x008B	Speed cursor. (Copied from 0x030B.)
0x0096	Virus level.
0x00A5	Capsule orientation. 00=Original; 01=Vertical, 90 degrees Counterclockwise from Original; 02=Reverse Original; 03=Vertical, 90 degrees Clockwise from Original
0x00F5	Player 1 buttons pressed.
0x00F6	Player 2 buttons pressed.
0x00F7	Player 1 buttons held.
0x00F8	Player 2 buttons held.
0x0301	Falling pill left color. 00=Yellow, 01=Red, 02=Blue
0x0302	Falling pill right color. 00=Yellow, 01=Red, 02=Blue
0x0305	Falling pill X position.
0x0306	Falling pill Y position.
0x030B	Pill Speed. (26 = fastest, 85=slowest (hex))
0x0312	Frames left before current pill drops.
0x0316	Level number.
0x031A	P1 Next pill: First color.
0x031B	P1 Next pill: Second color.
0x0324	Number of remaining virii for P1. stored in the decimal representation of the hex value seen on screen (IE 10 viruses remaining = hex 10 = decimal 16; 20 viruses remaining = hex 20 = decimal 32; 19 viruses remaining = hex 19 = decimal 25).
0x039A	P2 Next pill: First color. 0=Yellow, 1=Red, 2=Blue
0x039B	P2 Next pill: Second color.
0x03A4	Number of remaining virii for P2, stored same way.
0x0400-0x047F	Player 1 Play field tiles from top left to bottom right. 16 rows of 8 tiles. 255 when square is empty; 64/65/66 for top half of pill in Yellow, Red, and Blue; 80/81/82 for bottom half; 96/97/98 for left half; 112/113/114 for right half; 128/129/130 for single pellet; 176/177/178 for dying virii; 208/209/210 for virii. Uses values including 139/140/141/142/143/237/238/239/254 for the "Clear" box.
0x067E	Maximum frames to wait before the three viruses move.
0x067F	Frames left before the three viruses move.
0x0727	Number of players.
0x0731	Music type.
0x0740	Anti-Piracy flag. -- 0: Disabled, FF (and anything else): Enabled. When Enabled, the game will freeze when a pill lands.