| Mega Man 6's cartridge ROM, counted by part of the game: each stretch of code or data goes to the part the disassembly's labels and comments say it serves, and the value sums the bytes of each part. | 0x10-0x8000f | Code notes |
| Mega Man 6's sound bank, bank $34, opens with Mega Man 5's entry jumps, multiply, and sound-data read at the same addresses; only the two bank numbers the read maps differ: the overflow data bank, $1A in Mega Man 5 and $36 in Mega Man 6, and the data bank it restores, $19 and $35. | 0x68010-0x6807b | Code |
| Mega Man 6's per-frame sound tick is Mega Man 5's at the same address; three call targets differ, because the stream readers they call sit one byte lower in Mega Man 6. | 0x6807c-0x6810d | Code |
| Mega Man 6's sound command routine is Mega Man 5's with one change: where Mega Man 5 steps the sound's data pointer by incrementing $C1 and, on a carry, $C2 before copying it to $D0 and $D1, Mega Man 6 carries into X instead, so $C2 is left as it was, and the routine is a byte shorter. Code after it sits one byte lower, and its jumps, calls, and jump-table entries follow. | 0x6810e-0x68260 | Code |
| Mega Man 6's sound effect stream reader is Mega Man 5's, one byte lower ($8251 against $8252); only its call and jump targets and jump-table entries differ. | 0x68261-0x683a1 | Code |
| Mega Man 6's music track reader is Mega Man 5's, one byte lower ($8392 against $8393); only its call and jump targets, jump-table entries, and the addresses of the tables it reads differ. | 0x683a2-0x685ec | Code |
| Mega Man 6's note-to-period lookup is Mega Man 5's, one byte lower; the only differences are the two operands that address the period table, which sits seven bytes higher in Mega Man 6 ($8960 against $8959). | 0x685ed-0x686c8 | Code |
| Mega Man 6's volume envelope code is Mega Man 5's, one byte lower; only its jump-table entries, call targets, and the address of the envelope step table, seven bytes higher, differ. | 0x686c9-0x68843 | Code |
| Mega Man 6's period output is Mega Man 5's with one step added: after adding the channel's signed offset at $0714 to the period, a period of zero becomes 1. The added 8 bytes push the sound tables seven bytes higher, and the routine's table operands follow. | 0x68844-0x6892b | Code |
| Mega Man 6's sound tables (note lengths, octave offsets, envelope steps, octave thresholds, and the period table) are Mega Man 5's byte for byte, seven bytes higher at $891C; the zero padding after them, up to the song directory at $8A40, is seven bytes shorter. | 0x6892c-0x68a4f | Code |
Mega Man 6's 16-bit division at $CC70 is Mega Man 5's div16 at $F22D, except that it saves X in $08 instead of $09. | 0x7cc80-0x7ccc0 | Code |
| Both games slide the screen to a new section when Mega Man leaves by the top or bottom, but Mega Man 6's is new code. Mega Man 5 tests the player's Y ($0378) against $08 and $E8 inside its per-frame scroll update, reads the section layout from the stage bank at $A950, and steps the slide 4 pixels a frame from there; Mega Man 6's transitions are separate routines that clear the object slots, reset the spawner, and run their own loop of 120 frames for a vertical move, drawing and waiting a frame each time. | 0x7d701-0x7d8ba | Code |
| Both games walk a stage's sorted spawn list with two cursors, one for each side of the screen, comparing the scroll position with each entry's screen and X position, but Mega Man 6's spawner is new code. Mega Man 5 reads fixed tables in the stage bank ($A9FF, $AA7F, $AB80), keeps its cursors in $AD and $AE, and treats codes from $C0 up as palette and CHR commands; Mega Man 6 reaches each stage's lists through pointers it sets in $74-$7F from tables in bank $3A, keeps its cursors in $0649 and $064A, and skips entries whose bit in $0650 marks them used. | 0x74042-0x742d8 | Code |
| Mega Man 6's bank $10 holds, at $8800-$900F, the 129 tiles of Mega Man 5's CHR at $31800-$3200F (2,064 bytes), the title screen block of claim mm4-mm5-title-tiles plus one tile, with one tile changed: the 33rd ($8A00), a hollow square in Mega Man 5 and a circled R in Mega Man 6. | 0x20810-0x2101f | Code |
| Mega Man 6's bank $11 holds, at $82B0-$844F, Mega Man 5's 26 letter tiles, A to Z, from its CHR at $32410 (416 bytes), with the J redrawn: its hook reaches a pixel further left. | 0x222c0-0x2245f | Code |
| 116 of the 157 non-blank sprite tiles in Mega Man 6's bank $00 at $8000-$89FF (115 distinct) appear in Mega Man 5's sprite CHR at $00000-$01FFF, rearranged: the longest stretch that matches tile for tile is 11 tiles (176 bytes), Mega Man 5's tiles $0A-$14 as Mega Man 6's $0B-$15. | 0xc0-0x16f | Verified |
| Mega Man 6's background bank $11 has 83 different tiles of Mega Man 5's background CHR at $32000-$33FFF. Besides the 26 letters (claim mm5-mm6-letter-tiles), the ten tiles right before them, at $8200-$829F, are byte for byte Mega Man 5's ten tiles at $32300 (160 bytes); the rest come in stretches of up to 10 tiles. | 0x22210-0x222af | Verified |
| Mega Man 6's sounds $23-$3C, the first 26 after its music, at $B758-$BAC2 of bank $36, are 22 of Mega Man 5's sounds from $1A to $3E plus four new ones ($2A-$2D). The 22 keep Mega Man 5's order, except that its $3E comes in as $2E. Seventeen are byte for byte. In the other five only addresses differ, each moved as far as the sound: one address inside each of four effects, and the four track pointers of $39, a sound with music's priority $00 (Mega Man 5's $30). Mega Man 6 leaves out 12 of Mega Man 5's $1A-$3A: $1F, $21, $23, $2B, $2F, $31-$34, and $36-$38. The Mega Man 5 disassembly's notes name two of the carried sounds, the ricochet ($1E, Mega Man 6's $27) and the hit ($2A, Mega Man 6's $35); the kill sound ($2B) is one of those left out. | 0x6d768-0x6dad2 | Verified |
| Mega Man 6's sound effects $61 and $62, at $BE99-$BEE7 of bank $36, are byte for byte Mega Man 5's $17 and $18, the first two effects after its music. | 0x6dea9-0x6def7 | Verified |
| Mega Man 6's music $13, 116 bytes at $A19B-$A20E of bank $36, is Mega Man 5's music $11 moved. Only the four track pointers in its header differ, each $625 lower, as far as the song's start moved. | 0x6c1ab-0x6c21e | Verified |
| Mega Man 6's instrument table, 71 instruments of 8 bytes at $8B0F, has as many instruments as Mega Man 5's at $8ADB, but only 27 are the same under the same number. The longest such run is nine instruments, $3D-$45 (72 bytes). One more of Mega Man 6's is in Mega Man 5's table under another number. | 0x68b1f-0x68d56 | Verified |