The below table outlines all of the PIO which is defined, they're in general used along with 

*PIO_PS5 is not yet available. You can use PIO_PS4 when working with a PlayStation 5.

ASCII Constants

forums

testdate

blnewnew

smver

blnew

copy

oldfw

Keyboard

GPC Scripting - PIO

GPC Script Guide

GPC: An Introduction

New 32-bit Updates

Basic Syntax

Basic GPC Structure

A Simple Tutorial

Variables

Definitions

Data Section

Remapping

Const Arrays

Init Section

Main Section

Combo Section

User Created Functions

Identifiers

Flow Control

Operator Types

Controller

Racing Wheel

Trace

Memory

Misc

Persistent Memory

Constants

Internal Functions

Console Functions

Controller Functions

Keyboard Functions

Device Functions

Functions

Bit-Packing SPVARs

Custom OLED Buttons

Advanced Samples

SendMsgAppSample

API Samples

GPC Developer Guides

Name	Description	Value
PIO_NONE	get_controller/console identifier for no controller/console connected	0
PIO_AUTO	get_controller/console identifier for no controller/console connected	0
PIO_PS3	get_controller/console identifier for PlayStation 3 connected	1
PIO_XB360	get_controller/console identifier for Xbox 360 connected	2
PIO_WII	get_controller identifier for Nintendo Wii connected	3
PIO_PS4	get_controller/console identifier for PlayStation 4 connected	4
PIO_XB1	get_controller/console identifier for Xbox One/Series X\|S connected	5
PIO_SWITCH	get_controller/console identifier for Nintendo Switch connected	6
~~PIO_PS5~~	~~get_controller/console identifier for PlayStation 5 connected~~	7