Hello,
How can I read controller buttons via asm code?
I would like to use it with asmpsx.
Controller with ASM code
- scorpion2k81
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- PlayStation Model: SCPH-5502
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Shadow Verified
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Here's some snippets to help you out. You'll need to understand MIPS in order to get it to work correctly
Code: Select all
var_pad_pointer equ $80100020
; branch if triangle is being held
check_triangle
li t0,var_pad_pointer
lhu t0,$0(t6)
nop
beq t0,$10,myfunction
nop
; InitPads - initialise the joypads (trashes fp)
InitPads
addiu sp, sp, -$C
sw ra, $0(sp)
sw s0, $4(sp)
sw fp, $8(sp)
nop
addiu sp,sp,-$20 ; stack
jal NBStartPAD
nop
li t1, $15
li a0, $20000001
li t2, $b0
li a1,var_pad_pointer
li a2,$00000000
sw a2,$0(a1)
;li a2,$0000FFFF ; to test, write a nonzero value to the pad read loc
;sw a2,$0(a1)
jal NBPAD_init
nop
;la a1, pad_buf
;jalr t2
;nop
addiu sp,sp,$20 ; stack
lw ra,$0(sp)
lw s0,$4(sp)
lw fp,$8(sp)
addiu sp,sp,$C
jr ra
nop
; kernel/BIOS functions
NBStartPAD:
ori t2, zero, $B0
jr t2 ; StartPAD
ori t1, zero, $13
NBPAD_init:
ori t2, zero, $B0
jr t2 ; PAD_init
ori t1, zero, $15
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.
PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
- scorpion2k81
- Active PSXDEV User
- Posts: 57
- Joined: Feb 24, 2022
- I am a: Programmer
- PlayStation Model: SCPH-5502
- Location: Italy
Thanks!
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