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PSX for MiSTer
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SNAC: unstable inputs in Gran Turismo 2 #291

Open Thelypody opened 3 weeks ago

Thelypody commented 3 weeks ago

PSX core: 20240418, Main: 20240505.

While using a genuine DualShock 2 controller connected to MiSTer over SNAC, I encountered an input issue in all versions of Gran Turismo 2. Controller inputs appear to be unstable in main menu, either being doubled or skipped. Additionally, when entering the Options menu and switching to button configurations tab, another issue can be observed. By default steering in game is set to dpad if using digital controls or left analog stick if using analog controls. Enabling Analog mode on DualShock 2 causes the game to constantly switch between dpad and analog stick on steering controls, presumably showing that the game constantly loses connection to the controller for a brief moment.

Tested with the following game versions:

To make sure that this is not a failure on my hardware end, during the same game session DualShock 2 functioned perfectly with Gran Turismo (Japan, Asia), which makes it more likely to be a particular game issue.