!6502Dem/Resources/Sound7a

Home » Archimedes archive » Archimedes World » AW-1996-08.adf » !6502DEm_6502Dem » !6502Dem/Resources/Sound7a

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Archimedes archive » Archimedes World » AW-1996-08.adf » !6502DEm_6502Dem
Filename:	!6502Dem/Resources/Sound7a
Read OK:	✔
File size:	0B34 bytes
Load address:	0000
Exec address:	0000

File contents

   10REM > Sound7a
   20REM
   30REM BBC Sound and Speech emulation library
   40REM For Mike Borcherds BBC emulator
   50REM This file by Dominic Symes
   60
   70REM Set up global defaults
   80DEF PROCsound_define
   90REM Size of circular buffer for each channel
  100sound_buf_size_log%=10
  110sound_buf_size%=(1<<sound_buf_size_log%)
  120ENDPROC
  130
  140REM Call to set up sound tables
  150DEF PROCsound_init
  160LOCAL a,f%
  170PROCsound_define
  180REMvolume%=127
  190DIM sound_buffer% (4*sound_buf_size%)
  200DIM sound_vol_table% &40
  210DIM sound_sample% &200
  220DIM sound_stack% &80
  230FOR f%=0 TO &3FF
  240?(sound_buffer%+f%)=f%*10
  250NEXT
  260SYS "Sound_Volume",127 TO sc_vol
  270REM Set up sound sample for pitch channels - half way between
  280REM a sine wave and square wave gives best likeness.
  290FOR f%=0 TO &7F
  300SYS "6502_Sound",f%,A%
  310a=SIN((f%/128)*PI)
  320IF a<>0 THEN a=a^.2
  330SYS "Sound_SoundLog",&7FFFFFFF*a TO a
  340?(sound_sample%+f%)=a
  350?(sound_sample%+&80+f%)=a+1
  360NEXT
  370REM Set up the sound sample for the pulse generator
  380FOR f%=0 TO &3F
  390?(sound_sample%+&100+f%)=?(sound_sample%+f%*(8/4))
  400NEXT
  410FOR f%=0 TO &BF
  420?(sound_sample%+&110+f%)=?(sound_sample%+&80+f%*(8/12))
  430NEXT
  440SYS "Sound_Volume",sc_vol
  450sound_voice%=code+!(code+22*4)
  460!(sound_voice%+0)=sound_buffer%
  470!(sound_voice%+4)=sound_vol_table%
  480!(sound_voice%+8)=sound_sample%
  490!(sound_voice%+12)=sound_stack%+&40
  500sound_voice%+=16
  510ENDPROC
  520
  530DEFPROCsound_reinit
  540sound_voice%=code+!(code+22*4)
  550!(sound_voice%+0)=sound_buffer%
  560!(sound_voice%+4)=sound_vol_table%
  570!(sound_voice%+8)=sound_sample%
  580!(sound_voice%+12)=sound_stack%+&40
  590sound_voice%+=16
  600ENDPROC
  620
  630REM Call just before starting the emulator
  640DEF PROCsound_setup
  641IF NOTsound_on% THEN ENDPROC
  650LOCAL f%,a%
  660SYS "Sound_InstallVoice",sound_voice%,0 TO ,sound_voice_slot%
  670SYS "Sound_Configure",4,208,48,0,0 TO sc_0,sc_1,sc_2,sc_3,sc_4
  680SYS "Sound_AttachVoice",1,1 TO ,sv_1
  690SYS "Sound_AttachVoice",2,1 TO ,sv_2
  700SYS "Sound_AttachVoice",3,1 TO ,sv_3
  710SYS "Sound_AttachVoice",4,1 TO ,sv_4
  720SYS "Sound_AttachNamedVoice",1,"6502Emulator"
  730SYS "Sound_AttachNamedVoice",2,"6502Emulator"
  740SYS "Sound_AttachNamedVoice",3,"6502Emulator"
  750SYS "Sound_AttachNamedVoice",4,"6502Emulator"
  760REM Start infinite duration notes on each of the channels
  770SYS "Sound_Volume",volume% TO sc_vol
  780REM Set up the linear to log volume conversion
  790FOR f%=0 TO &F
  800a%=f%+(f%<<4)
  810a%=a%+(a%<<8)
  820a%=a%+(a%<<16)
  830SYS "Sound_SoundLog",(a%>>>1) TO a%
  840REMPRINT a%
  850?(sound_vol_table%+f%)=a%
  860NEXT
  870SOUND 1,-1,1,255
  880SOUND 2,-1,1,255
  890SOUND 3,-1,1,255
  900SOUND 4,-1,1,255
  901sound%=TRUE
  910ENDPROC
  920
  930REM Call after exiting the emulator
  940DEF PROCsound_restore
  941IF NOTsound_on% THEN ENDPROC
  950SYS "Sound_Volume",sc_vol
  960SYS "Sound_Configure",sc_0,sc_1,sc_2,sc_3,sc_4
  970SYS "Sound_AttachVoice",1,sv_1
  980SYS "Sound_AttachVoice",2,sv_2
  990SYS "Sound_AttachVoice",3,sv_3
 1000SYS "Sound_AttachVoice",4,sv_4
 1010SYS "Sound_RemoveVoice",0,sound_voice_slot%
 1011sound%=FALSE
 1020ENDPROC
 1030


� > Sound7a
�
,� BBC Sound and Speech emulation library
(%� For Mike Borcherds BBC emulator
2 � This file by Dominic Symes
<
F� Set up global defaults
P� �sound_define
Z.� Size of circular buffer for each channel
dsound_buf_size_log%=10
n,sound_buf_size%=(1<<sound_buf_size_log%)
x�
�
�!� Call to set up sound tables
�� �sound_init
�
� a,f%
��sound_define
��volume%=127
�'� sound_buffer% (4*sound_buf_size%)
�� sound_vol_table% &40
�� sound_sample% &200
�� sound_stack% &80
�� f%=0 � &3FF
�?(sound_buffer%+f%)=f%*10
��
"ș "Sound_Volume",127 � sc_vol
?� Set up sound sample for pitch channels - half way between
6� a sine wave and square wave gives best likeness.
"� f%=0 � &7F
,ș "6502_Sound",f%,A%
6a=�((f%/128)*�)
@� a<>0 � a=a^.2
J'ș "Sound_SoundLog",&7FFFFFFF*a � a
T?(sound_sample%+f%)=a
^?(sound_sample%+&80+f%)=a+1
h�
r5� Set up the sound sample for the pulse generator
|� f%=0 � &3F
�6?(sound_sample%+&100+f%)=?(sound_sample%+f%*(8/4))
��
�� f%=0 � &BF
�;?(sound_sample%+&110+f%)=?(sound_sample%+&80+f%*(8/12))
��
�ș "Sound_Volume",sc_vol
�"sound_voice%=code+!(code+22*4)
�#!(sound_voice%+0)=sound_buffer%
�&!(sound_voice%+4)=sound_vol_table%
�#!(sound_voice%+8)=sound_sample%
�'!(sound_voice%+12)=sound_stack%+&40
�sound_voice%+=16
��

��sound_reinit
"sound_voice%=code+!(code+22*4)
&#!(sound_voice%+0)=sound_buffer%
0&!(sound_voice%+4)=sound_vol_table%
:#!(sound_voice%+8)=sound_sample%
D'!(sound_voice%+12)=sound_stack%+&40
Nsound_voice%+=16
X�
l
v,� Call just before starting the emulator
�� �sound_setup
�� �sound_on% � �
�� f%,a%
�?ș "Sound_InstallVoice",sound_voice%,0 � ,sound_voice_slot%
�@ș "Sound_Configure",4,208,48,0,0 � sc_0,sc_1,sc_2,sc_3,sc_4
�&ș "Sound_AttachVoice",1,1 � ,sv_1
�&ș "Sound_AttachVoice",2,1 � ,sv_2
�&ș "Sound_AttachVoice",3,1 � ,sv_3
�&ș "Sound_AttachVoice",4,1 � ,sv_4
�0ș "Sound_AttachNamedVoice",1,"6502Emulator"
�0ș "Sound_AttachNamedVoice",2,"6502Emulator"
�0ș "Sound_AttachNamedVoice",3,"6502Emulator"
�0ș "Sound_AttachNamedVoice",4,"6502Emulator"
�;� Start infinite duration notes on each of the channels
&ș "Sound_Volume",volume% � sc_vol
0� Set up the linear to log volume conversion
� f%=0 � &F
 a%=f%+(f%<<4)
*a%=a%+(a%<<8)
4a%=a%+(a%<<16)
>%ș "Sound_SoundLog",(a%>>>1) � a%
H
�PRINT a%
R?(sound_vol_table%+f%)=a%
\�
f� 1,-1,1,255
p� 2,-1,1,255
z� 3,-1,1,255
�� 4,-1,1,255
�sound%=�
��
�
�%� Call after exiting the emulator
�� �sound_restore
�� �sound_on% � �
�ș "Sound_Volume",sc_vol
�1ș "Sound_Configure",sc_0,sc_1,sc_2,sc_3,sc_4
�!ș "Sound_AttachVoice",1,sv_1
�!ș "Sound_AttachVoice",2,sv_2
�!ș "Sound_AttachVoice",3,sv_3
�!ș "Sound_AttachVoice",4,sv_4
�.ș "Sound_RemoveVoice",0,sound_voice_slot%
�sound%=�
��

�

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00000130  e1 0d 00 82 04 0d 00 8c  21 f4 20 43 61 6c 6c 20  |........!. Call |
00000140  74 6f 20 73 65 74 20 75  70 20 73 6f 75 6e 64 20  |to set up sound |
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00000190  32 37 0d 00 be 27 de 20  73 6f 75 6e 64 5f 62 75  |27...'. sound_bu|
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00000270  66 6f 72 20 70 69 74 63  68 20 63 68 61 6e 6e 65  |for pitch channe|
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000006d0  75 72 65 22 2c 34 2c 32  30 38 2c 34 38 2c 30 2c  |ure",4,208,48,0,|
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000006f0  5f 32 2c 73 63 5f 33 2c  73 63 5f 34 0d 02 a8 26  |_2,sc_3,sc_4...&|
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000007a0  64 5f 41 74 74 61 63 68  4e 61 6d 65 64 56 6f 69  |d_AttachNamedVoi|
000007b0  63 65 22 2c 31 2c 22 36  35 30 32 45 6d 75 6c 61  |ce",1,"6502Emula|
000007c0  74 6f 72 22 0d 02 da 30  c8 99 20 22 53 6f 75 6e  |tor"...0.. "Soun|
000007d0  64 5f 41 74 74 61 63 68  4e 61 6d 65 64 56 6f 69  |d_AttachNamedVoi|
000007e0  63 65 22 2c 32 2c 22 36  35 30 32 45 6d 75 6c 61  |ce",2,"6502Emula|
000007f0  74 6f 72 22 0d 02 e4 30  c8 99 20 22 53 6f 75 6e  |tor"...0.. "Soun|
00000800  64 5f 41 74 74 61 63 68  4e 61 6d 65 64 56 6f 69  |d_AttachNamedVoi|
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00000820  74 6f 72 22 0d 02 ee 30  c8 99 20 22 53 6f 75 6e  |tor"...0.. "Soun|
00000830  64 5f 41 74 74 61 63 68  4e 61 6d 65 64 56 6f 69  |d_AttachNamedVoi|
00000840  63 65 22 2c 34 2c 22 36  35 30 32 45 6d 75 6c 61  |ce",4,"6502Emula|
00000850  74 6f 72 22 0d 02 f8 3b  f4 20 53 74 61 72 74 20  |tor"...;. Start |
00000860  69 6e 66 69 6e 69 74 65  20 64 75 72 61 74 69 6f  |infinite duratio|
00000870  6e 20 6e 6f 74 65 73 20  6f 6e 20 65 61 63 68 20  |n notes on each |
00000880  6f 66 20 74 68 65 20 63  68 61 6e 6e 65 6c 73 0d  |of the channels.|
00000890  03 02 26 c8 99 20 22 53  6f 75 6e 64 5f 56 6f 6c  |..&.. "Sound_Vol|
000008a0  75 6d 65 22 2c 76 6f 6c  75 6d 65 25 20 b8 20 73  |ume",volume% . s|
000008b0  63 5f 76 6f 6c 0d 03 0c  30 f4 20 53 65 74 20 75  |c_vol...0. Set u|
000008c0  70 20 74 68 65 20 6c 69  6e 65 61 72 20 74 6f 20  |p the linear to |
000008d0  6c 6f 67 20 76 6f 6c 75  6d 65 20 63 6f 6e 76 65  |log volume conve|
000008e0  72 73 69 6f 6e 0d 03 16  0f e3 20 66 25 3d 30 20  |rsion..... f%=0 |
000008f0  b8 20 26 46 0d 03 20 11  61 25 3d 66 25 2b 28 66  |. &F.. .a%=f%+(f|
00000900  25 3c 3c 34 29 0d 03 2a  11 61 25 3d 61 25 2b 28  |%<<4)..*.a%=a%+(|
00000910  61 25 3c 3c 38 29 0d 03  34 12 61 25 3d 61 25 2b  |a%<<8)..4.a%=a%+|
00000920  28 61 25 3c 3c 31 36 29  0d 03 3e 25 c8 99 20 22  |(a%<<16)..>%.. "|
00000930  53 6f 75 6e 64 5f 53 6f  75 6e 64 4c 6f 67 22 2c  |Sound_SoundLog",|
00000940  28 61 25 3e 3e 3e 31 29  20 b8 20 61 25 0d 03 48  |(a%>>>1) . a%..H|
00000950  0d f4 50 52 49 4e 54 20  61 25 0d 03 52 1d 3f 28  |..PRINT a%..R.?(|
00000960  73 6f 75 6e 64 5f 76 6f  6c 5f 74 61 62 6c 65 25  |sound_vol_table%|
00000970  2b 66 25 29 3d 61 25 0d  03 5c 05 ed 0d 03 66 10  |+f%)=a%..\....f.|
00000980  d4 20 31 2c 2d 31 2c 31  2c 32 35 35 0d 03 70 10  |. 1,-1,1,255..p.|
00000990  d4 20 32 2c 2d 31 2c 31  2c 32 35 35 0d 03 7a 10  |. 2,-1,1,255..z.|
000009a0  d4 20 33 2c 2d 31 2c 31  2c 32 35 35 0d 03 84 10  |. 3,-1,1,255....|
000009b0  d4 20 34 2c 2d 31 2c 31  2c 32 35 35 0d 03 85 0c  |. 4,-1,1,255....|
000009c0  73 6f 75 6e 64 25 3d b9  0d 03 8e 05 e1 0d 03 98  |sound%=.........|
000009d0  04 0d 03 a2 25 f4 20 43  61 6c 6c 20 61 66 74 65  |....%. Call afte|
000009e0  72 20 65 78 69 74 69 6e  67 20 74 68 65 20 65 6d  |r exiting the em|
000009f0  75 6c 61 74 6f 72 0d 03  ac 14 dd 20 f2 73 6f 75  |ulator..... .sou|
00000a00  6e 64 5f 72 65 73 74 6f  72 65 0d 03 ad 14 e7 20  |nd_restore..... |
00000a10  ac 73 6f 75 6e 64 5f 6f  6e 25 20 8c 20 e1 0d 03  |.sound_on% . ...|
00000a20  b6 1c c8 99 20 22 53 6f  75 6e 64 5f 56 6f 6c 75  |.... "Sound_Volu|
00000a30  6d 65 22 2c 73 63 5f 76  6f 6c 0d 03 c0 31 c8 99  |me",sc_vol...1..|
00000a40  20 22 53 6f 75 6e 64 5f  43 6f 6e 66 69 67 75 72  | "Sound_Configur|
00000a50  65 22 2c 73 63 5f 30 2c  73 63 5f 31 2c 73 63 5f  |e",sc_0,sc_1,sc_|
00000a60  32 2c 73 63 5f 33 2c 73  63 5f 34 0d 03 ca 21 c8  |2,sc_3,sc_4...!.|
00000a70  99 20 22 53 6f 75 6e 64  5f 41 74 74 61 63 68 56  |. "Sound_AttachV|
00000a80  6f 69 63 65 22 2c 31 2c  73 76 5f 31 0d 03 d4 21  |oice",1,sv_1...!|
00000a90  c8 99 20 22 53 6f 75 6e  64 5f 41 74 74 61 63 68  |.. "Sound_Attach|
00000aa0  56 6f 69 63 65 22 2c 32  2c 73 76 5f 32 0d 03 de  |Voice",2,sv_2...|
00000ab0  21 c8 99 20 22 53 6f 75  6e 64 5f 41 74 74 61 63  |!.. "Sound_Attac|
00000ac0  68 56 6f 69 63 65 22 2c  33 2c 73 76 5f 33 0d 03  |hVoice",3,sv_3..|
00000ad0  e8 21 c8 99 20 22 53 6f  75 6e 64 5f 41 74 74 61  |.!.. "Sound_Atta|
00000ae0  63 68 56 6f 69 63 65 22  2c 34 2c 73 76 5f 34 0d  |chVoice",4,sv_4.|
00000af0  03 f2 2e c8 99 20 22 53  6f 75 6e 64 5f 52 65 6d  |..... "Sound_Rem|
00000b00  6f 76 65 56 6f 69 63 65  22 2c 30 2c 73 6f 75 6e  |oveVoice",0,soun|
00000b10  64 5f 76 6f 69 63 65 5f  73 6c 6f 74 25 0d 03 f3  |d_voice_slot%...|
00000b20  0c 73 6f 75 6e 64 25 3d  a3 0d 03 fc 05 e1 0d 04  |.sound%=........|
00000b30  06 04 0d ff                                       |....|
00000b34

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