diff options
Diffstat (limited to 'libpsn00b/psxcd/cdgetsector.s')
| -rw-r--r-- | libpsn00b/psxcd/cdgetsector.s | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/libpsn00b/psxcd/cdgetsector.s b/libpsn00b/psxcd/cdgetsector.s deleted file mode 100644 index 6a29069..0000000 --- a/libpsn00b/psxcd/cdgetsector.s +++ /dev/null @@ -1,56 +0,0 @@ -.set noreorder - -.include "hwregs_a.inc" - -.section .text - -.global CdGetSector -.type CdGetSector, @function -CdGetSector: - - lui $a2, IOBASE - -#.Lwait_fifo: # Probably redundant as the BIOS CD-ROM -# lbu $v0, CD_REG0($a2) # routines do not not wait for this -# nop -# andi $v0, 0x40 -# beqz $v0, .Lwait_fifo -# nop - - lui $v0, 0x1 -# srl $a1, 2 # (the official implementation expects $a1/size - # to be in 32-bit words rather than bytes) - or $v0, $a1 - sw $a0, DMA3_MADR($a2) # Set DMA base address and transfer length - sw $v0, DMA3_BCR($a2) - - lui $v0, 0x1100 # Start DMA transfer - sw $v0, DMA3_CHCR($a2) - nop - nop - -.Ldma_wait: # Ensure DMA transfer has completed - lw $v0, DMA3_CHCR($a2) - nop - srl $v0, 24 - andi $v0, 0x1 - - bnez $v0, .Ldma_wait - nop - -# Not stable -# sb $0 , CD_REG0($a2) -#.Lflush_fifo: # Read out any remaining bytes in the buffer -# lbu $v1, CD_REG0($a2) -# li $v0, 0x40 -# and $v1, $v0 -# beqz $v1, .Lend_flush -# nop -# lbu $v0, CD_REG2($a2) -# b .Lflush_fifo -# nop -#.Lend_flush: - - jr $ra - li $v0, 1 - |