MegaSD Compatibility

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This is the MegaSD page


Compatibility: Mega Sg

The MegaSD is compatible with Analogue's Mega Sg console, however there's currently compatibility issues with the Mega Sg and the Sega CD that will need to be fixed in a firmware update from Analogue. The majority of these issues should NOT affect the MegaSD when it's used through the cartridge port. If you're using the MSDEXP with the MegaSD on the Mega Sg, you will encounter these compatibility issues. In the current firmware (v4.7 from Analogue, v7.7 for the jailbreak) games like Sonic CD, Final Fight CD and others will not work correctly when running them through the expansion slot with both real Sega CD units and the MSDEXP with the MegaSD. You can workaround some of these compatibility issues by downgrading the Mega Sg's firmware to v4.6 (which is from Analogue) or v7.6 (for the jailbreak firmware) but games like Chuck Rock, The Adventures of Willy Beamish and NHL '94 won't work while running them through the expansion slot.

Again, the MegaSD when used through the cartridge slot will avoid most of these compatibility issues, except for games like Double Switch and the US release of WWF: Rage in the Cage which have issues that Analogue will need to fix in a firmware update. This is NOT a MegaSD issue.

Compatibility: Sega Nomad

The MegaSD is compatible with the Sega Nomad however there's a couple compatibility hurdles to keep in mind here.


  • Sega Master System game support requires a modification to the Nomad allowing them to work.
- Similarly the SG-1000 will NOT work at all on the Sega Nomad, as the Genesis VDP lacks the video modes required to display SG-1000 games correctly.


  • The Sega Nomad cannot output CDDA audio from Sega CD games without a modification.
-The Nomad Triple Bypass from Mobius Strip Technologies is highly recommended to add CD audio support to the Sega Nomad.

Compatibility: 32X CD

The MegaSD is compatible with 32X CD games however, there is a required add-on needed to play these titles.


  • MSDEXP is an add-on for your MegaDrive(Genesis) Model 1 or Model 2 and Analogue MegaSG.
- The MSDEXP is a limited production item available from Mobius Strip Technologies.
- The MSDEXP plugs in to the expansion port of your console. It adapts the expansion port to allow the MegaSD to connect directly to the expansion bus.