cr4zymanz0r
Kuroko's Training Dummy
- Joined
- Mar 14, 2011
- Posts
- 73
tl;dr - On the controller ports of the Omega MVS, pins 4 (button 4 / D) and 9 are connected together. If I disconnect pin 9, will I lose any real functionality from this?
So, some pinouts seem to show button 4 (D) being connected to both pins 4 and 9 on the DB15 controller port https://old.pinouts.ru/Game/NeoGeoJoystick_pinout.shtml
I'm not aware of any superguns or DB15 style arcade sticks using pin 9 at all, and especially not for button 4. However, the Omega MVS does have button 4 connected to both pin 4 and 9.
The problem is, I found a nice Saturn to DB15 controller adapter with re-assignable buttons and other nice features that I assembled myself since it's open source and I couldn't find any in stock to buy. https://oshpark.com/shared_projects/yE8DCMIC
The adapter has DB15 pin 9 tied to reset on the microcontroller so it can be programmed from the DB15 port, so when it's plugged into the Omega MVS, when I hit button 4 then it also pulls pin 9 low as will which triggers the microcontroller to reset.
I don't really want to cut the trace on the adapter itself since I want to mess with the code myself which means I'll be reprogramming it a fair bit and it'd be annoying to be disconnect and reconnecting the trace all the time. I'm considering just disconnecting pin 9 on the controller ports in the Omega MVS itself, but I want to make sure I'm not disabling some obscure functionality that I might want later down the road.
So, some pinouts seem to show button 4 (D) being connected to both pins 4 and 9 on the DB15 controller port https://old.pinouts.ru/Game/NeoGeoJoystick_pinout.shtml
I'm not aware of any superguns or DB15 style arcade sticks using pin 9 at all, and especially not for button 4. However, the Omega MVS does have button 4 connected to both pin 4 and 9.
The problem is, I found a nice Saturn to DB15 controller adapter with re-assignable buttons and other nice features that I assembled myself since it's open source and I couldn't find any in stock to buy. https://oshpark.com/shared_projects/yE8DCMIC
The adapter has DB15 pin 9 tied to reset on the microcontroller so it can be programmed from the DB15 port, so when it's plugged into the Omega MVS, when I hit button 4 then it also pulls pin 9 low as will which triggers the microcontroller to reset.
I don't really want to cut the trace on the adapter itself since I want to mess with the code myself which means I'll be reprogramming it a fair bit and it'd be annoying to be disconnect and reconnecting the trace all the time. I'm considering just disconnecting pin 9 on the controller ports in the Omega MVS itself, but I want to make sure I'm not disabling some obscure functionality that I might want later down the road.
