351 lines
7.0 KiB
PHP
351 lines
7.0 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; SB16.INC ;;
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;; ;;
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;; Sound Blaster 16 functions for MenuetOS ;;
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;; ;;
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;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;;
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;; ;;
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;; See file COPYING for details ;;
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;; ;;
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;; - 11.07.2002 8 bit stereo mode - Ville Turjanmaa ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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SB16_load_music equ 0xc0000000
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SB16_play_music equ 0xc0000001
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DMAPage equ 0x2A
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Rate equ 44100
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SB16Buffer equ 0x2A0000
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;SB16_Status equ SB16Buffer+65536
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iglobal
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sound_data_format dd 0x1
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sound_data_length dd 65536
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sound_data_freq dd 44100
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endg
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sound_interface:
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cmp eax,0 ; Load data
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jne no_SB16_load_music
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mov edi,[TASK_BASE]
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add edi,TASKDATA.mem_start
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add ebx,[edi]
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call code_SB16_load_music
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ret
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no_SB16_load_music:
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cmp eax,1 ; Play data
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jne no_SB16_play_music
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call code_SB16_play_music
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ret
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no_SB16_play_music:
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cmp eax,2 ; Set data formats
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jne no_SB16_data_format
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cmp ebx,0 ; ebx=0 play format
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jne no_sound_format
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mov [sound_data_format],ecx ; 1=8b mono, 2=8b stereo
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ret
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no_sound_format:
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cmp ebx,1 ; ebx=1 data length
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jne no_sound_length
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mov [sound_data_length],ecx ;
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ret
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no_sound_length:
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cmp ebx,2 ; ebx=2 sound data frequency
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jne no_sound_freq
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mov [sound_data_freq],ecx
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ret
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no_sound_freq:
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ret
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no_SB16_data_format:
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;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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cmp eax, edi ; this is subfunction #55 ?
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jne retFunc55 ; if no then return.
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cmp byte [sound_flag],0
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jne retFunc55
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movzx eax, byte [countDelayNote]
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or al, al ; player is busy ?
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jnz retFunc55 ; return counter delay Note
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; mov eax, [TASK_BASE]
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; mov eax, [eax+0x10] ; address application im memory
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; add eax, edx ; add offset Delay-Note string
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; mov [memAdrNote], eax
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mov [memAdrNote],edx
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mov eax,[TASK_BASE]
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mov eax,[eax+TASKDATA.pid]
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mov [pidProcessNote],eax
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xor eax, eax ; Ok! EAX = 0
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retFunc55:
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mov [esp+36], eax ; return value EAX for application
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;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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ret
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code_SB16_play_music:
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cmp [sound_data_format],1
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jne no_sound_8bm
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call sb_play_8b_mono
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ret
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no_sound_8bm:
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cmp [sound_data_format],2
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jne no_sound_8bs
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call sb_play_8b_stereo
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ret
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no_sound_8bs:
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ret
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Blaster_command:
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push eax
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push ecx
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push edx
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mov dx,word [sb16]
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add dx,0xc
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mov cx,1000
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bcl1:
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in al,dx
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and al,128
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jz bcl2
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loop bcl1
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bcl2:
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mov al,[esp+8]
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mov dx,[esp+0]
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add dx,word [sb16]
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out dx,al
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pop edx
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pop ecx
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pop eax
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ret
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sb_play_8b_stereo:
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pusha
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call sb_set_dma
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call sb_set_stereo
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mov dx,0xc
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mov al,0xa8
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call Blaster_command
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mov al,0x40
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call Blaster_command
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mov al,245
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call Blaster_command
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mov al,0x48
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call Blaster_command
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mov al,0xff
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call Blaster_command
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call Blaster_command
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mov al,0x91
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call Blaster_command
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popa
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ret
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sb_set_stereo:
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push eax
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push edx
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call sb_wait
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mov dx,word [sb16]
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add dx,0x4
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mov al,0xe
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out dx,al
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inc dx
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in al,dx
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and al,253
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or al,2 ; stereo
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out dx,al
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pop edx
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pop eax
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ret
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code_SB16_load_music:
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cmp byte [SB16_Status],1
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je nol
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mov edi,SB16Buffer
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mov esi,ebx
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mov ecx,65536/4
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cld
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rep movsd
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nol: ret
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iglobal
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dma_table db 0x87,0x83,0x81,0x82
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endg
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;--------------------------------
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; program dma
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;--------------------------------
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sb_set_dma:
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pusha
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mov eax,[sound_dma]
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add eax,4
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out 0xa,al
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mov al,0
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out 0xc,al
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mov eax,[sound_dma]
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add eax,0x48
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out 0xb,al
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mov edx,[sound_dma]
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shl edx,1
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mov al,0
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out dx,al
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mov al,0
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out dx,al
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mov edx,[sound_dma]
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add edx,dma_table
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movzx edx,byte [edx]
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mov al,DMAPage
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out dx,al
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mov edx,[sound_dma]
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shl edx,1
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inc edx
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mov eax,[sound_data_length]
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dec eax
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and eax,0xff
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; mov al,(DataLength-1) and 0xff
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out dx,al
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mov eax,[sound_data_length]
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dec eax
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shr eax,8
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; mov al,(DataLength-1) shr 8
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out dx,al
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mov eax,[sound_dma] ; DMA
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out 0xa,al
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popa
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ret
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sb_play_8b_mono:
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call sb_set_dma
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cmp byte [SB16_Status],1
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jne contsb16
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jmp retserve
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contsb16:
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mov dx,word [sb16]
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add dx,4
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mov ecx,[sound_dma]
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mov ax,0x01
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shl ax,cl
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shl ax,8
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add ax,0x81
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out dx,ax
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mov ax,0f280h ;enable irq5
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out dx,ax
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adr1_SB: mov dx,word [sb16]
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add dx,0ch
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in al,dx
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and al,080h
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jnz adr1_SB
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call sb_set_stereo
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mov al,0d1h
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out dx,al
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mov dx,word [sb16]
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add dx,0ch
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call sb_wait
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mov al,40h ; Rate
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out dx,al
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call sb_wait
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mov al,256-1000000/Rate
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out dx,al
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call sb_wait
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mov al,14h ; Datalength
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out dx,al
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call sb_wait
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mov eax,[sound_data_length]
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dec eax
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and eax,0xff
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;mov al,(DataLength-1) and 0xff
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out dx,al
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call sb_wait
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mov eax,[sound_data_length]
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dec eax
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shr eax,8
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;mov al,(DataLength-1) shr 8
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out dx,al
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retserve:
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ret
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sb_wait: in al,dx ;wait
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and al,080h
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jnz sb_wait
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ret
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;****************************************
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; END CODE SB16 by Minazzi Paolo
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;***************************************
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