Double Dragon 3 Japan turbo button a and b are malfunctioning

[zhuojunli1981]

Double Dragon 3 Japan turbo button a ，b missing i have go to set turbo delay (in Frames）
Press turbo a to connect and press turbo b to have no effect

[negativeExponent]

button A and button B have separate cycle timers, meaning, that if you don't press both at the same time, then they wont react like the buttons were pressed at the same time (or the same frame) as one will have different cycle timer than the other.

With that said, depending on the game, you will also need to adjust the Turbo Delay (Delay in Frames) as need as some inputs will be dropped and not register. Double-dragon series is mostly affected by this, as i have to set delay to 2 for simultaneous button presses to be more responsive than not. Most games works fine with turbo delay of 3, Contra works with 1 delay.