53 lines
2.1 KiB
PHP
53 lines
2.1 KiB
PHP
;===========
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; PSX INPUT
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;===========
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;=================
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; Digital Buttons
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;=================
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JOY_L2 equ 0x0001 ; Joypad Input: L2 (Bit 0)
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JOY_R2 equ 0x0002 ; Joypad Input: R2 (Bit 1)
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JOY_L1 equ 0x0004 ; Joypad Input: L1 (Bit 2)
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JOY_R1 equ 0x0008 ; Joypad Input: R1 (Bit 3)
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JOY_T equ 0x0010 ; Joypad Input: Triangle (Bit 4)
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JOY_C equ 0x0020 ; Joypad Input: Circle (Bit 5)
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JOY_X equ 0x0040 ; Joypad Input: X (Bit 6)
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JOY_S equ 0x0080 ; Joypad Input: Square (Bit 7)
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JOY_SELECT equ 0x0100 ; Joypad Input: Select (Bit 8)
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JOY_L3 equ 0x0200 ; Joypad Input: L3 (Bit 9) (Analog Mode Only)
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JOY_R3 equ 0x0400 ; Joypad Input: R3 (Bit 10) (Analog Mode Only)
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JOY_START equ 0x0800 ; Joypad Input: Start (Bit 11)
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JOY_UP equ 0x1000 ; Joypad Input: Up (Bit 12)
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JOY_RIGHT equ 0x2000 ; Joypad Input: Right (Bit 13)
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JOY_DOWN equ 0x4000 ; Joypad Input: Down (Bit 14)
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JOY_LEFT equ 0x8000 ; Joypad Input: Left (Bit 15)
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;==============
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; Input Macros
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;==============
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.macro InitJoy,BUFFER ; Initialise Joypads & Setup VSync Wait Routine Using BIOS: Buffer Address
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li t1,0x15
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li a0,0x20000001
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li t2,0xB0
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la a1,BUFFER ; Set Pad Buffer Address To Automatically Update Each Frame
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jalr t2 ; Jump To BIOS Routine
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nop ; Delay Slot
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.endmacro
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.macro WaitVSync,BUFFER,DATA ; Wait For Vertical Retrace Period & Store XOR Pad Data: Buffer Address, Data Address
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la a1,BUFFER ; Load Pad Buffer Address
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Wait: ; Wait For Vertical Retrace Period & Store XOR Pad Data
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lw t0,0(a1) ; Load Pad Buffer
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nop ; Delay Slot
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beqz t0,Wait ; IF (Pad Buffer == 0) Wait
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nor t0,r0 ; NOR Compliment Pad Data Bits (Delay Slot)
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sw r0,0(a1) ; Store Zero To Pad Buffer
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la a1,DATA ; Load Pad Data Address
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sw t0,0(a1) ; Store Pad Data
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.endmacro
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.macro IsJoyDown,INPUT,DATA ; Is Joypad Digital Button Pressed Down: Input, Input Data Address
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la a1,DATA ; Load Input Data Address
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lw t0,0(a1) ; Load Input Data Word
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nop ; Delay Slot
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andi t0,INPUT ; T0 = Input Status
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.endmacro |