Any chance of Super Street Fighter II Genesis?

[Lowe0]

It's cool to see development on the firmware moving at a fast pace again!  The Retrode already covers the vast majority of my collection, but there are a couple of cartridges out there that I'm interested in; one of those is Super Street Fighter II for the Genesis.

From the documentation (https://emu-docs.org/Genesis/ssf2.txt), it looks pretty straightforward:

• read 0x000000 through 0x3FFFFF into a 5MB buffer
• write 8 to 0xA130FD
• write 9 to 0xA130FF
• read 0x300000 through 0x3FFFFF again into the last 1MB of the 5MB buffer

But, I don't know anything about microcontrollers, so I don't understand the complexity involved in actually implementing that.

Is SSFII worth a look for a future version of the firmware, or is this tougher than it looks?  Thanks!

Edit: I'd be happy to chip in a US cart as a donor for testing.

[skaman]

It should be possible.  I'll look into it.

[Lowe0]

Thanks!  Hope it works out successfully.

[skaman]

Interesting Retrode bug.  If you read the SSF2 cart on the Retrode, at the odd addresses 0xF1-0xFF, you'll see the current bank map (repeats every 0x100 bytes).  The Retrode's Sega read code is reading the SSF2 bank registers 0xA130F1-0xA130FF instead of the ROM data.  The odd bytes at 0xF1-0xFF will be 00,01,02,03,04,05,06,07 which are the banks mapped to Banks 0-7.

[skaman]

Finished SSF2 support.  I'll roll it into a future firmware release.  I'm contemplating an update to the current v0.24 SMS/GG firmware.  If I release a v0.24a firmware then the SSF2 fix will be in there.  Otherwise, the change will come after the upcoming Virtual Boy and PCE/TG16 firmware releases.

[Lowe0]

Awesome - thanks!

[skaman]

Released a BETA firmware with the SSF2 support.  If testing goes well, then the firmware will be released as FW v0.24a.

[skaman]

FW v0.24a has been released with Super Street Fighter II support.