8BitDo M30 Gamepad (Mega Drive)

By Daba

Supporter (4)

Daba's picture

09-03-2019, 14:06


I just received the new 8BitDo M30 for original Mega Drive and works with the JoyMega on the Zemmix Neo but I have micro disconnections (lost one or two keystrokes every few seconds).

I don't know if is a power problem of the RS232 (the M30 transmitter is powered by the RS323 only) or the JoyMega.
Anyone else is experience the same behaviour?


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By Grauw

Enlighted (7842)

Grauw's picture

09-03-2019, 14:20

I can’t say yet, but I just ordered the 8BitDo M30 Bluetooth controller and MegaDrive Retro Receiver, so let’s see :).

By Daba

Supporter (4)

Daba's picture

09-03-2019, 14:26

It's a well made controller.

Maybe are interferences from the Zemmix Neo.
I just bought a serial extension cable to check it.
If it's a power problem the cable should make it worse.

I'll keep you updated when I received the cable.


By sd_snatcher

Prophet (2916)

sd_snatcher's picture

09-03-2019, 15:54


Is your JoyMega made with a transistor, or does it have a chip? JoyMegas made with transistors are known to be problematic.

About the extension chord: a serial extension cable might not have all the wires inside. There are real controller extension cables specific for Sega Genesis/MSX/etc available on eBay.

By Daba

Supporter (4)

Daba's picture

09-03-2019, 16:27

Thanks @sd_snatcher

Is the transistor model. That's could be the problem. oO
I can't find where I can buy one with chip.

About the cable I bought is this one: 2m Serial EXTENSION Cable Lead 9pin DB9 M - F RS232 6ft
I choose this one because says:
Connection Split/Duplication: None (1 : 1)

If it doesn't works, I'll buy the one you recommends.

Thanks much.

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