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Blaster Master/RAM map

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Chip tiny.png The following article is a RAM map for Blaster Master.

Note for template.png
Note:
Memory locations discovered using the 'FCEU' Emulator for Windows.
OffsetEffectComments
0x0014 Current Area Current area * 8 (area 1 = $08, area 2 = $10, etc.)
0x0092 Hover Gauge value Bar Graph. value increases 32 per bar (max 255)
0x0099 Special Items See bit field table below.
0x00DD Lives Remaining
0x00C3 "GUN" Gauge Bar graph. value increases 32 per bar (max 255)
0x00F5 PAD1 new input Input new to current frame
0x00F6 PAD2 new input Input new to current frame
0x00F7 PAD1 current input
0x00F8 PAD2 current input
0x03FB Bosses Defeated See bit field table below.
0x03FC Item Pickups See bit field table below.
0x03FF Saved tank health Tank health when outside tank. (max 255)
0x040D Main Health Gauge Bar graph. Value increases 32 per bar (max 255)
0x0500-5FF Level Data Each byte represents one square tile
0x06F0 Homing Missiles Quantity (00 - 99)
0x06F1 Lightening Blast Quantity (00 - 99)
0x06F2 3-way Missile Quantity (00 - 99)


Bit field table for offset 0x0099 Bit field table for offset 0x03FB Bit field table for offset 0x03FC
Bit Decimal Effect Bit Decimal Effect Bit Decimal Effect
1 1 Gives 'Hover' ability 1 1 Stage 1 Boss defeated 1 1 Stage 1 Item Obtained
2 2 Gives 'Dive' ability 2 2 Stage 2 Boss defeated 2 2 Stage 2 Item Obtained
3 4 Gives 'Wall.1' ability 3 4 Stage 3 Boss Defeated 3 4 Stage 3 Item Obtained
4 8 Gives 'Wall.2' ability 4 8 Stage 4 Boss Defeated 4 8 Stage 4 Item Obtained
5 16 Gives 'Crusher' ability 5 16 Stage 5 Boss Defeated 5 16 Stage 5 Item Obtained
6 32 No effect 6 32 Stage 6 Boss Defeated 6 32 Stage 6 Item Obtained
7 64 Gives 'Hyper' ability 7 64 Stage 7 Boss Defeated 7 64 Stage 7 Item Obtained
8 128 Gives 'Key' ability 8 128 Stage 8 Boss Defeated 8 128 No Effect

Example: To get Hover, Wall.1, and Wall.2, add the decimal values that correspond to the table entries. In this case, 1, 4, and 8. Setting offset 0x0099 to decimal 13 will give you those skills, since 1+4+8 = 13.

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Note:
Setting bit 8 in offset 0x03FB will take you straight to the final boss (guy with whip) without having to defeat the 2-legged spit shooter first.
(Source: Locations mapped by Aeryck (mailto:sk4ven@netscape.net))