Hello! I have a question regarding an issue with my VA6 model 1 Sega Genesis. I lost Master System mode.
I am unable to have Master System roms play on my system. I've modified it quite a bit. And I also use the Mega Everdrive X7.
I installed an RGB bypass board, bypassing the Sony CXA chip. So my R,G,B,Csync, all run through the board.
I also recapped my entire VA6, with a capacitor set I purchased from "console5"
And I've installed a NANO board, which has code to allow a hard reset of the entire system via button combination on a 3/6 button controller.
With all of that done, my Genesis & 32x display and function properly.
The only issue I have, is that when I try to run a Master System game, I'll get a black screen for about 3 seconds, then get kicked back to the Everdrive game list.
Now, I tried doing extensive searchings, and I came across documents regarding SMS mode. One mentioned 3 specific cartridge slot pins, 2 are for ground, but 1 of them called A21, is for the Vcc.
Now, in my quest for jailbar free image, I started clipping various pins of the Sony CXA. It's been a few months, so i don't know the pins off the top of my head. But I believe that I cut the pin known as "Vcc 2"
My question is, if Vcc is cut from the Sony CXA, is that what is causing my system to not boot into Master System mode? Cause I looked up what the Vcc is, and it contains power. So I'm wondering if this is the culprit?
If the Sony CXA is NOT the reason, then could anyone point me into the direction(s) as to where to begin my troubleshooting to get Master System mode functioning again?
Thank you for reading!
Lost Master System mode in Model 1 VA6 Genesis
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infidelity
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Link83
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Re: Lost Master System mode in Model 1 VA6 Genesis
The 32X doesnt pass through all the required signals for Master System mode, so if you want to play Master System games you have to remove the 32X 
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infidelity
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Re: Lost Master System mode in Model 1 VA6 Genesis
I was not using the 32x for master system mode. I know the 32x doesn't allow Master System mode. Sorry to include that in my 1st post.
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Ikaruga11
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Re: Lost Master System mode in Model 1 VA6 Genesis
There's a mod to allow the 32X to play Master System games.
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infidelity
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Re: Lost Master System mode in Model 1 VA6 Genesis
I know, but I really don't want this getting hijacked/off topic please.
I really hope someone with knowledge of the Genesis can help me out.
I really hope someone with knowledge of the Genesis can help me out.
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infidelity
- Posts: 72
- Joined: Mon Apr 03, 2017 3:39 pm