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| author | U-Lameguy64-LT\Lameguy64 <lameguy64@gmail.com> | 2022-04-01 14:39:04 +0800 |
|---|---|---|
| committer | U-Lameguy64-LT\Lameguy64 <lameguy64@gmail.com> | 2022-04-01 14:39:04 +0800 |
| commit | a8b404b3400c3ebd8e0b923dcaefcc49ea563e36 (patch) | |
| tree | 497e052bf5eb3aaed387cefa8a38b53027ffc8ac /indev/psxmdec/mdec.s | |
| parent | 8a01ce9efe1c03b4c103b47006b5ac3af585743c (diff) | |
| download | psn00bsdk-a8b404b3400c3ebd8e0b923dcaefcc49ea563e36.tar.gz | |
Fixed up psxmdec prototype to use psxpress
Diffstat (limited to 'indev/psxmdec/mdec.s')
| -rw-r--r-- | indev/psxmdec/mdec.s | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/indev/psxmdec/mdec.s b/indev/psxmdec/mdec.s deleted file mode 100644 index a7b5094..0000000 --- a/indev/psxmdec/mdec.s +++ /dev/null @@ -1,185 +0,0 @@ -.set noreorder
-
-.include "hwregs_a.h"
-
-.section .text
-
-.global mdec_reset # Resets the MDEC
-.type mdec_reset, @function
-mdec_reset:
-
- lui $a0, IOBASE
-
- lui $v0, 0xE000 # Reset MDEC
- sw $v0, MDEC1($a0)
- nop
-
- lui $v1, 0x8004 # Wait until reset completes
-.Lreset_wait:
- lw $v0, MDEC1($a0)
- nop
- bne $v0, $v1, .Lreset_wait
- nop
-
- jr $ra
- nop
-
-
-.global mdec_cmd # Sends a MDEC command word
-.type mdec_cmd, @function
-mdec_cmd:
-
- lui $a1, IOBASE
-
-.Lcmd_ready: # Wait until command busy is zero
- lw $v0, MDEC1($a1)
- lui $v1, 0x2000
- and $v0, $v1
- bnez $v0, .Lcmd_ready
- nop
-
- sw $a0, MDEC0($a1) # Write command word
-
- jr $ra
- nop
-
-.global mdec_in # Transmit data to DMA0 (MDEC in)
-.type mdec_in, @function
-mdec_in:
-
- # a0 - data source address
- # a1 - blocks to transfer (64 bytes per block)
-
- lui $a3, IOBASE
-
-.Lmdec_in_wait: # Wait until MDEC is ready for data
- lw $v0, MDEC1($a3)
- lui $v1, 0x1000
- and $v0, $v1
- beqz $v0, .Lmdec_in_wait
- nop
-
- sw $a0, D0_MADR($a3) # Set source address
-
- andi $v0, $a1, 0xFFFF # Set transfer length
- sll $v0, 16
- ori $v0, 0x20 # 32 word block size
- sw $v0, D0_BCR($a3)
-
- lui $v0, 0x0100 # Begin transfer
- ori $v0, 0x0201
- sw $v0, D0_CHCR($a3)
-
- jr $ra
- nop
-
-.global mdec_out # Transmit data to DMA0 (MDEC in)
-.type mdec_out, @function
-mdec_out:
-
- # a0 - data source address
- # a1 - blocks to transfer (64 bytes per block)
-
- lui $a3, IOBASE
-
-.Lmdec_out_ready: # Wait until MDEC is ready for data
- lw $v0, MDEC1($a3)
- lui $v1, 0x1000
- and $v0, $v1
- beqz $v0, .Lmdec_out_ready
- nop
-
- sw $a0, D1_MADR($a3) # Set source address
-
- andi $v0, $a1, 0xFFFF # Set transfer length
- sll $v0, 16
- ori $v0, 0x20 # 32 word block size
- sw $v0, D1_BCR($a3)
-
- lui $v0, 0x0100 # Begin transfer
- ori $v0, 0x0200
- sw $v0, D1_CHCR($a3)
-
-.Lmdec_out_wait:
- lw $v0, D1_CHCR($a3)
- lui $v1, 0x0200
- and $v0, $v1
- bnez $v0, .Lmdec_out_wait
- nop
-
- jr $ra
- nop
-
-.global mdec_setscale # Uploads the internal scaletable to MDEC
-.type mdec_setscale, @function
-mdec_setscale:
-
- addiu $sp, -4
- sw $ra, 0($sp)
-
- lui $a0, 0x6000 # Set scaletable command
- jal mdec_cmd
- nop
-
- la $a0, _mdec_scaletable # Upload scaletable
- jal mdec_in
- li $a1, 1 # 64 halfwords
-
- lw $ra, 0($sp)
- addiu $sp, 4
- jr $ra
- nop
-
-
-.global mdec_setquants # Uploads the internal quant tables
-.type mdec_setquants, @function
-mdec_setquants:
-
- addiu $sp, -4
- sw $ra, 0($sp)
-
- lui $a0, 0x4000 # Set quant tables command
- ori $a0, 0x0001 # luma + chroma data
- jal mdec_cmd
- nop
-
- la $a0, _mdec_qtables # Upload quant tables
- jal mdec_in
- li $a1, 2 # 128 halfwords
-
- lw $ra, 0($sp)
- addiu $sp, 4
- jr $ra
- nop
-
-
-.section .data
-
-_mdec_qtables:
- # taken from CCITT Rec. T.81
- .hword 16, 11, 10, 16, 24, 40, 51, 61 # Luma table
- .hword 12, 12, 14, 19, 26, 58, 60, 55
- .hword 14, 13, 16, 24, 40, 57, 69, 56
- .hword 14, 17, 22, 29, 51, 87, 80, 62
- .hword 18, 22, 37, 56, 68, 109, 103, 77
- .hword 24, 35, 55, 64, 81, 104, 113, 92
- .hword 49, 64, 78, 87, 103, 121, 120, 101
- .hword 72, 92, 95, 98, 112, 100, 103, 99
- .hword 17, 18, 24, 47, 99, 99, 99, 99 # Chroma table
- .hword 18, 21, 26, 66, 99, 99, 99, 99
- .hword 24, 26, 56, 99, 99, 99, 99, 99
- .hword 47, 66, 99, 99, 99, 99, 99, 99
- .hword 99, 99, 99, 99, 99, 99, 99, 99
- .hword 99, 99, 99, 99, 99, 99, 99, 99
- .hword 99, 99, 99, 99, 99, 99, 99, 99
- .hword 99, 99, 99, 99, 99, 99, 99, 99
-
-_mdec_scaletable:
- .hword 0x5A82,0x5A82,0x5A82,0x5A82,0x5A82,0x5A82,0x5A82,0x5A82
- .hword 0x7D8A,0x6A6D,0x471C,0x18F8,0xE707,0xB8E3,0x9592,0x8275
- .hword 0x7641,0x30FB,0xCF04,0x89BE,0x89BE,0xCF04,0x30FB,0x7641
- .hword 0x6A6D,0xE707,0x8275,0xB8E3,0x471C,0x7D8A,0x18F8,0x9592
- .hword 0x5A82,0xA57D,0xA57D,0x5A82,0x5A82,0xA57D,0xA57D,0x5A82
- .hword 0x471C,0x8275,0x18F8,0x6A6D,0x9592,0xE707,0x7D8A,0xB8E3
- .hword 0x30FB,0x89BE,0x7641,0xCF04,0xCF04,0x7641,0x89BE,0x30FB
- .hword 0x18F8,0xB8E3,0x6A6D,0x8275,0x7D8A,0x9592,0x471C,0xE707
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