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Hi, I was reading several threads in the forum, one by vingazole about patches for support Mega Drive pads and another by revon about the button settings on OutRun Europa.

I tried with MEKA the japanese Alex Kidd in Miracle World rom to find in the debugger the adresses for the buttons, to map them to other buttons (PAUSE sms button to MD 3 PAD start button) but I couldn't.

Then I tried Emulicious and its GUI is more noob friendly, at least for me, but the results were the same.

I saw the memory viewer, the debugger but I don't understand what I need to find.

My objective is to make patches, at least, for every relevant game in SMS library for the owners of the Everdrive x3, which lacks a pause button.

So, if somebody knows, may you can explain me an example, step by step, how can I made this?

I want to learn, thanks in advance.

You mean the Mega Everdrive X3 I guess.
The pause button on the SMS is tied to the NMI, so it isn't a 'normal' button. Also, MD pads aren't normal SMS pads, thus you need quite a bit of work to patch a game that way, and you need Z80 asm knowledge, to start.

Hello.

You need to insert code when reading port $DC. It is Controller Port Player 1.
Then add megadrive pad function and when new button is pressed do a call to line $66

Do you have readed this topic?

http://www.smspower.org/forums/15107-HacksForUsingMegaDriveControllersInSMSGames

Wellcome to hacking :)

Author	Message
solbad03 Joined: 14 Mar 2018 Posts: 1	A noob who wants to create patches for SMS games (Everdrive X3) Posted: Wed Mar 14, 2018 10:39 am
solbad03 Joined: 14 Mar 2018 Posts: 1	Hi, I was reading several threads in the forum, one by vingazole about patches for support Mega Drive pads and another by revon about the button settings on OutRun Europa. I tried with MEKA the japanese Alex Kidd in Miracle World rom to find in the debugger the adresses for the buttons, to map them to other buttons (PAUSE sms button to MD 3 PAD start button) but I couldn't. Then I tried Emulicious and its GUI is more noob friendly, at least for me, but the results were the same. I saw the memory viewer, the debugger but I don't understand what I need to find. My objective is to make patches, at least, for every relevant game in SMS library for the owners of the Everdrive x3, which lacks a pause button. So, if somebody knows, may you can explain me an example, step by step, how can I made this? I want to learn, thanks in advance.

sverx Joined: 05 Sep 2013 Posts: 3827 Location: Stockholm, Sweden	Posted: Wed Mar 14, 2018 12:52 pm
	You mean the Mega Everdrive X3 I guess. The pause button on the SMS is tied to the NMI, so it isn't a 'normal' button. Also, MD pads aren't normal SMS pads, thus you need quite a bit of work to patch a game that way, and you need Z80 asm knowledge, to start.

BcnAbel76 Joined: 28 Feb 2016 Posts: 503 Location: Barcelona	Posted: Thu Mar 15, 2018 7:35 pm
	Hello. You need to insert code when reading port $DC. It is Controller Port Player 1. Then add megadrive pad function and when new button is pressed do a call to line $66 Do you have readed this topic? http://www.smspower.org/forums/15107-HacksForUsingMegaDriveControllersInSMSGames Wellcome to hacking :)

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