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Mega Man X SA1

Hack of Mega Man X


SA-1 is a co-processor present in some SNES games. Being roughly four times faster than the main CPU it can significantly improve a game’s performance and that is the purpose of this hack, to remove slowdowns present in the original Mega Man X.

Other changes include:

  • Leg Dash defaulted to the L button.
  • Generated passwords are saved into SRAM
  • Control scheme saved into SRAM.
  • Subtanks stop depleting at full health.
  • Disabled double-tap to dash.(optional)


  • mmxsa1.ips
  • mmxsa1_double_tap_disabled.ips

Besides zsnes, it should run on all emulators.

Rom disassembled with:

SA1 code based on:

ver. 1.2:

  • Disabled double-tap to dash made into a separate patch.
  • Fixed Chill Penguin’s frozen statues collision.
  • Fixed C. Sting palette effects.
  • Fixed graphical glitch on sea and sky stages.
  • Fixed the amount of health provided by Subtanks.
  • Control scheme saved into SRAM.

ROM / ISO Information:

  • Database match: Mega Man X (USA)
  • Database: No-Intro: Super Nintendo Entertainment System (v. 20180813-062835)
  • File/ROM SHA-1: 449A00631208FBCC8D58209E66D0D488674B7FB1
  • File/ROM CRC32: 1033EBA4




ContributorType of contributionListed credit

User Review Information

The ultimate version of Mega Man X! (Just a couple suggestions)

Reviewed By: ShadowOne333 on 01 Jun 2020

Finally, Mega Man X sees a proper boost in performance, and now the awful lag that plagued this game are no more!

And that’s not where it ends!

This hack adds a lot of Quality of Life change into Mega Man X to make it the definitive version of the game.

The subtank changes, the bugfixes, heck the SRAM option alone was enough to get me into this hack.

I would just like to suggest 2 additional features to this hack, so that hopefully the author takes them into consideration:

1) Port the Hadouken changes from “Capsule Fix” into this: Mostly so that you can get the Hadouken upgrade on the 1st try, instead of dying multiple times until it appears. The other 2 changes for Hadouken are welcomed too if deciding to implement them as well.

2) Port the Air Dash / Walljump hack from “Capsule Fix” as well (originally made by Justin3009) Basically, have the dash enabled by default from the very beginning, and once the player gets the Boots upgrade, they gain the air dash as a reward. This will give the players a ton more flexibility when tackling bosses, and more replayability to the game, instead of always going for Chill Penguin’s stage 1st just to get the dash. Also, the Walljump patch from the same hack allows the player to press and hold the ‘A’ button like the later X games to do a stronger jump from the wall.

All in all, this hack is an absolute must have! I hope the developer takes these two suggestions into consideration for an upcoming update.

What are you waiting for? Make this your definitive Mega Man X version!

Version 1.2 Recommended - Yes

User Reviews
Oh MY!!!!jmd648819 Aug 20201.2Yes
A highly recommended patch!BulkSlash09 Jun 20201.2Yes
The ultimate version of Mega Man X! (Just a couple suggestions)ShadowOne33301 Jun 20201.2Yes
This is truly amazing and the best part is the bugs got fixed!JUD6MENT04 Jun 20201.0Yes
A must! We need Rev 1, though...niuus26 May 20201.1Yes
Awesome!ParkerMcFly07 Jun 20201.1Yes
Unbelievable differencenobi25 May 20201.1Yes
Great Hack! but be careful what Emulator you choose (Video inside)MagusLOGS28 May 20201.1Yes
Great Hack, but needing a tweak or 2Mugen_Ketsueki19 May 20201.0Yes
Great hack, but needs some bug fixesdrunk_caterpillar25 May 20201.1Yes
Much appreciated improvementsMattKimura19 May 20201.0Yes