Sparse Invaders Source - Sound.txt

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(New page: = Sparse Invaders Source - Sound.txt = ;------------------------------------------------------------------------------- ; Sound - Invaders ... ; Written by PJ for use withi...)
Current revision (17:30, 6 November 2009) (edit) (undo)
 
Line 1: Line 1:
= Sparse Invaders Source - Sound.txt =
= Sparse Invaders Source - Sound.txt =
- 
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
; Sound - Invaders ...
; Sound - Invaders ...
Line 271: Line 270:
_MAKE_SOUND:
_MAKE_SOUND:
-
 
-
 
-
STA SoundIndex ;//[0E9E] 85 84
 
-
LDA MuteFlag ;//[0EA0] AD 2D 2F
 
-
BNE bra_0EE6 ;//[0EA3] D0 41
 
-
TXA ;//[0EA5] 8A
 
-
PHA ;//[0EA6] 48
 
-
TYA ;//[0EA7] 98
 
-
PHA ;//[0EA8] 48
 
-
LDX SoundIndex ;//[0EA9] A6 84
 
-
LDA SoundSync,X ;//[0EAB] BD 08 22
 
-
STA SoundIndex ;//[0EAE] 85 84
 
-
bra_0EB0:
 
-
LDA SoundSync,X ;//[0EB0] BD 08 22
 
-
STA SoundBlock1 ;//[0EB3] 8D 01 22
 
-
LDA SoundChannel,X ;//[0EB6] BD 14 22
 
-
STA SoundBlock ;//[0EB9] 8D 00 22
 
-
LDY #$02 ;//[0EBC] A0 02
 
-
LDA SoundVolumeEnv,X ;//[0EBE] BD 20 22
 
-
JSR _STORE_SOUND_WORD ;//[0EC1] 20 E7 0E
 
-
LDA SoundPitch,X ;//[0EC4] BD 2C 22
 
-
JSR _STORE_SOUND_WORD ;//[0EC7] 20 E7 0E
 
-
LDA SoundDuration,X ;//[0ECA] BD 38 22
 
-
JSR _STORE_SOUND_WORD ;//[0ECD] 20 E7 0E
 
-
TXA ;//[0ED0] 8A
 
-
PHA ;//[0ED1] 48
 
-
LDX #<SoundBlock ;//[0ED2] A2 00
 
-
LDY #>SoundBlock ;//[0ED4] A0 22
 
-
LDA #OSW_SOUND ;//[0ED6] A9 07
 
-
JSR osword ;//[0ED8] 20 F1 FF
 
-
PLA ;//[0EDB] 68
 
-
TAX ;//[0EDC] AA
 
-
INX ;//[0EDD] E8
 
-
DEC SoundIndex ;//[0EDE] C6 84
 
-
BPL bra_0EB0 ;//[0EE0] 10 CE
 
-
PLA ;//[0EE2] 68
 
-
TAY ;//[0EE3] A8
 
-
PLA ;//[0EE4] 68
 
-
TAX ;//[0EE5] AA
 
-
bra_0EE6:
+
STA SoundIndex ;//[0E9E] 85 84
-
RTS ;//[0EE6] 60
+
LDA MuteFlag ;//[0EA0] AD 2D 2F
-
+
BNE bra_0EE6 ;//[0EA3] D0 41
-
_STORE_SOUND_WORD:
+
TXA ;//[0EA5] 8A
-
STA SoundBlock,Y ;//[0EE7] 99 00 22
+
PHA ;//[0EA6] 48
-
INY ;//[0EEA] C8
+
TYA ;//[0EA7] 98
-
ASL ;//[0EEB] 0A
+
PHA ;//[0EA8] 48
-
LDA #$00 ;//[0EEC] A9 00
+
LDX SoundIndex ;//[0EA9] A6 84
-
BCC bra_0EF2 ;//[0EEE] 90 02
+
LDA SoundSync,X ;//[0EAB] BD 08 22
-
LDA #$FF ;//[0EF0] A9 FF
+
STA SoundIndex ;//[0EAE] 85 84
-
+
-
bra_0EF2:
+
-
STA SoundBlock,Y ;//[0EF2] 99 00 22
+
-
INY ;//[0EF5] C8
+
-
RTS ;//[0EF6] 60
+
-
+
-
SoundBlock:
+
-
.byte $13 ;//[2200] .
+
-
+
-
SoundBlock1:
+
-
.byte $00 ;//[2201] .
+
-
.byte $F1 ;//[2202] .
+
-
.byte $FF ;//[2203] .
+
-
.byte $04 ;//[2204] .
+
-
.byte $00 ;//[2205] .
+
-
.byte $01 ;//[2206] .
+
-
.byte $00 ;//[2207] .
+
-
+
-
SoundSync:
+
-
.byte $00 ;//[2208] .
+
-
.byte $00 ;//[2209] .
+
-
.byte $01 ;//[220A] .
+
-
.byte $01 ;//[220B] .
+
-
.byte $01 ;//[220C] .
+
-
.byte $01 ;//[220D] .
+
-
.byte $00 ;//[220E] .
+
-
.byte $00 ;//[220F] .
+
-
.byte $00 ;//[2210] .
+
-
.byte $00 ;//[2211] .
+
-
.byte $00 ;//[2212] .
+
-
.byte $00 ;//[2213] .
+
-
+
-
SoundChannel:
+
-
.byte $12 ;//[2214] .
+
-
.byte $13 ;//[2215] .
+
-
.byte $11 ;//[2216] .
+
-
.byte $10 ;//[2217] .
+
-
.byte $11 ;//[2218] .
+
-
.byte $10 ;//[2219] .
+
-
.byte $12 ;//[221A] .
+
-
.byte $13 ;//[221B] .
+
-
.byte $13 ;//[221C] .
+
-
.byte $13 ;//[221D] .
+
-
.byte $13 ;//[221E] .
+
-
.byte $13 ;//[221F] .
+
-
+
-
SoundVolumeEnv:
+
-
.byte $01 ;//[2220] .
+
-
.byte $F1 ;//[2221] .
+
-
.byte $02 ;//[2222] .
+
-
.byte $03 ;//[2223] .
+
-
.byte $02 ;//[2224] .
+
-
.byte $F1 ;//[2225] .
+
-
.byte $01 ;//[2226] .
+
-
.byte $04 ;//[2227] .
+
-
.byte $00 ;//[2228] .
+
-
.byte $F1 ;//[2229] .
+
-
.byte $F1 ;//[222A] .
+
-
.byte $04 ;//[222B] .
+
-
+
-
SoundPitch:
+
-
.byte $64 ;//[222C] d
+
-
.byte $C8 ;//[222D] .
+
-
.byte $50 ;//[222E] P
+
-
.byte $07 ;//[222F] .
+
-
.byte $50 ;//[2230] P
+
-
.byte $07 ;//[2231] .
+
-
.byte $AA ;//[2232] .
+
-
.byte $78 ;//[2233] x
+
-
.byte $00 ;//[2234] .
+
-
.byte $00 ;//[2235] .
+
-
.byte $04 ;//[2236] .
+
-
.byte $96 ;//[2237] .
+
-
+
-
SoundDuration:
+
-
.byte $0A ;//[2238] .
+
-
.byte $02 ;//[2239] .
+
-
.byte $FF ;//[223A] .
+
-
.byte $0A ;//[223B] .
+
-
.byte $FF ;//[223C] .
+
-
.byte $04 ;//[223D] .
+
-
.byte $0A ;//[223E] .
+
-
.byte $FF ;//[223F] .
+
-
.byte $01 ;//[2240] .
+
-
.byte $01 ;//[2241] .
+
-
.byte $01 ;//[2242] .
+
-
.byte $FF ;//[2243] .
+
-
+
-
Env1:
+
-
.byte $01,$02,$ff,$fe,$ff,$0a,$0a,$32,$7e,$fc,$fc,$fc,$7e,$00
+
-
Env2:
+
-
.byte $02,$02,$04,$00,$FC,$0A,$0A,$0A,$01,$00,$00,$00,$01,$01
+
-
Env3:
+
-
.byte $03,$04,$00,$00,$00,$01,$01,$01,$7e,$fc,$ff,$fc,$7e,$50
+
-
Env4:
+
-
.byte $04,$01,$08,$04,$f4,$04,$04,$04,$64,$00,$00,$00,$64,$64
+
-
+
-
_INITSOUND:
+
-
+
-
LDA #VDU_MODE ;//[2FF0] A9 16
+
-
JSR oswrch ;//[2FF2] 20 EE FF
+
-
LDA #VDU_ENABLE_PRINTER ;//[2FF5] A9 02
+
-
JSR oswrch ;//[2FF7] 20 EE FF
+
-
LDA #0
+
-
STA MuteFlag
+
-
+
-
LDX #<Env1 ;//[0ED2] A2 00
+
-
LDY #>Env1 ;//[0ED4] A0 22
+
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
-
JSR osword ;//[0ED8] 20 F1 FF
+
-
+
-
LDX #<Env2 ;//[0ED2] A2 00
+
-
LDY #>Env2 ;//[0ED4] A0 22
+
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
-
JSR osword ;//[0ED8] 20 F1 FF
+
-
+
-
LDX #<Env3 ;//[0ED2] A2 00
+
-
LDY #>Env3 ;//[0ED4] A0 22
+
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
-
JSR osword ;//[0ED8] 20 F1 FF
+
-
+
-
LDX #<Env4 ;//[0ED2] A2 00
+
-
LDY #>Env4 ;//[0ED4] A0 22
+
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
-
JSR osword ;//[0ED8] 20 F1 FF
+
-
+
-
RTS
+
-
+
-
 
+
-
 
+
-
;-------------------------------------------------------------------------------
+
-
; Sound - Invaders ...
+
-
; Written by PJ for use within Invaders.
+
-
;
+
-
; Copyright 2008,2009 Neil Beresford
+
-
;
+
-
; This file is part of Sparse Invaders.
+
-
; Sparse Invaders is free software: you can redistribute it and/or modify
+
-
; it under the terms of the GNU General Public License as published by
+
-
; the Free Software Foundation, either version 3 of the License, or
+
-
; (at your option) any later version.
+
-
;
+
-
; Sparse Invaders is distributed in the hope that it will be useful,
+
-
; but WITHOUT ANY WARRANTY; without even the implied warranty of
+
-
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+
-
; GNU General Public License for more details.
+
-
;
+
-
; You should have received a copy of the GNU General Public License
+
-
; along with Sparse Invaders. If not, see <http://www.gnu.org/licenses/>.
+
-
;
+
-
;
+
-
;-------------------------------------------------------------------------------
+
-
+
-
+
-
;-----------------------------
+
-
;
+
-
; VDU CODES
+
-
;
+
-
;-----------------------------
+
-
.alias VDU_NULL $00
+
-
.alias VDU_TO_PRINTER $01
+
-
.alias VDU_ENABLE_PRINTER $02
+
-
.alias VDU_DISABLE_PRINTER $03
+
-
.alias VDU_WRITE_TEXT $04
+
-
.alias VDU_WRITE_TEXT_GFX $05
+
-
.alias VDU_ENABLE $06
+
-
.alias VDU_BEEP $07
+
-
.alias VDU_CURSOR_BACK $08
+
-
.alias VDU_CURSOR_FWD $09
+
-
.alias VDU_CURSOR_DOWN $0A
+
-
.alias VDU_CURSOR_UP $0B
+
-
.alias VDU_CLEAR_TEXT $0C
+
-
.alias VDU_RETURN $0D
+
-
.alias VDU_PAGED_MODE_ON $0E
+
-
.alias VDU_PAGED_MODE_OFF $0F
+
-
.alias VDU_CLEAR_GFX $10
+
-
.alias VDU_TEXT_COLOUR $11
+
-
.alias VDU_GFX_COLOUR $12
+
-
.alias VDU_LOGICAL_COLOUR $13
+
-
.alias VDU_DEFAULT_LOGICAL_COLOURS $14
+
-
.alias VDU_DISABLE $15
+
-
.alias VDU_MODE $16
+
-
.alias VDU_PROGRAM_DISPLAY_CHAR $17
+
-
.alias VDU_GFX_WINDOW $18
+
-
.alias VDU_PLOT $19
+
-
.alias VDU_RESTORE_WINDOW $1A
+
-
.alias VDU_ESCAPE $1B
+
-
.alias VDU_TEXT_WINDOW $1C
+
-
.alias VDU_GFX_ORIGIN $1D
+
-
.alias VDU_CURSOR_HOME $1E
+
-
.alias VDU_MOVE_CURSOR $1F
+
-
;-----------------------------
+
-
;
+
-
; OSWORD
+
-
;
+
-
;-----------------------------
+
-
.alias OSW_READ_LINE $00
+
-
.alias OSW_READ_SYS_CLOCK $01
+
-
.alias OSW_WRITE_SYS_CLOCK $02
+
-
.alias OSW_READ_TIMER $03
+
-
.alias OSW_WRITE_TIMER $04
+
-
.alias OSW_READ_IO_BYTE $05
+
-
.alias OSW_WRITE_IO_BYTE $06
+
-
.alias OSW_SOUND $07
+
-
.alias OSW_DEFINE_ENVELOPE $08
+
-
.alias OSW_READ_PIXEL $09
+
-
.alias OSW_READ_CHARACTER_DEFN $0A
+
-
.alias OSW_READ_PALETTE $0B
+
-
.alias OSW_WRITE_PALETTE $0C
+
-
.alias OSW_READ_CURSOR $0D
+
-
;-----------------------------
+
-
;
+
-
; INKEY
+
-
;
+
-
;-----------------------------
+
-
.alias INKEY_SPACE $9D
+
-
.alias INKEY_SLASH_QUESTION $87
+
-
.alias INKEY_X $BD
+
-
.alias INKEY_Z $9E
+
-
.alias INKEY_A $BE
+
-
.alias INKEY_COMMA_LESSTHAN $99
+
-
.alias INKEY_PERIOD_GREATERTHAN $98
+
-
.alias INKEY_RETURN $B6
+
-
;-----------------------------
+
-
;
+
-
; OSBYTE
+
-
;
+
-
;-----------------------------
+
-
.alias FX_PRINT_OPERATING_SYSTEM_VERSION $00
+
-
.alias FX_USER_OSBYTE_CALL_RW_LOCATION_ $01
+
-
.alias FX_SELECT_INPUT_STREAM $02
+
-
.alias FX_SELECT_OUTPUT_STREAM $03
+
-
.alias FX_ENABLEDISABLE_CURSOR_EDITING $04
+
-
.alias FX_SELECT_PRINTER_DESTINATION $05
+
-
.alias FX_SET_CHARACTER_IGNORED_BY_PRINTER $06
+
-
.alias FX_SET_RS_BAUD_RATE_FOR_RECEIVING_DATA $07
+
-
.alias FX_SET_RS_BAUD_RATE_FOR_DATA_TRANSMISSION $08
+
-
.alias FX_SET_FLASHING_COLOUR_MARK_STATE_DURATION $09
+
-
.alias FX_SET_FLASHING_COLOUR_SPACE_STATE_DURATION $0A
+
-
.alias FX_SET_KEYBOARD_AUTOREPEAT_DELAY_INTERVAL $0B
+
-
.alias FX_SET_KEYBOARD_AUTOREPEAT_RATE $0C
+
-
.alias FX_DISABLE_EVENTS $0D
+
-
.alias FX_ENABLE_EVENTS $0E
+
-
.alias FX_FLUSH_SELECTED_BUFFER_CLASS $0F
+
-
.alias FX_SELECT_ADC_CHANNELS_TO_BE_SAMPLED $10
+
-
.alias FX_FORCE_AN_ADC_CONVERSION $11
+
-
.alias FX_RESET_SOFT_KEYS $12
+
-
.alias FX_WAIT_FOR_VERTICAL_SYNC $13
+
-
.alias FX_EXPLODE_SOFT_CHARACTER_RAM_ALLOCATION $14
+
-
.alias FX_FLUSH_SPECIFIC_BUFFER $15
+
-
.alias FX_READ_VDU_STATUS $75
+
-
.alias FX_REFLECT_KEYBOARD_STATUS_IN_LEDS $76
+
-
.alias FX_CLOSE_ANY_SPOOL_OR_EXEC_FILES $77
+
-
.alias FX_WRITE_CURRENT_KEYS_PRESSED_INFORMATION $78
+
-
.alias FX_PERFORM_KEYBOARD_SCAN $79
+
-
.alias FX_PERFORM_KEYBOARD_SCAN_FROM__ $7A
+
-
.alias FX_INFORM_OS_PRINTER_DRIVER_GOING_DORMANT $7B
+
-
.alias FX_CLEAR_ESCAPE_CONDITION $7C
+
-
.alias FX_SET_ESCAPE_CONDITION $7D
+
-
.alias FX_ACKNOWLEDGE_DETECTION_OF_ESCAPE_CONDITION $7E
+
-
.alias FX_CHECK_FOR_EOF_ON_AN_OPEN_FILE $7F
+
-
.alias FX_READ_ADC_CHANNEL_OR_GET_BUFFER_STATUS $80
+
-
.alias FX_READ_KEY_WITH_TIME_LIMIT $81
+
-
.alias FX_READ_MACHINE_HIGH_ORDER_ADDRESS $82
+
-
.alias FX_READ_TOP_OF_OS_RAM_ADDRESS_OSHWM $83
+
-
.alias FX_READ_BOTTOM_OF_DISPLAY_RAM_ADDRESS_HIMEM $84
+
-
.alias FX_READ_BOTTOM_OF_DISPLAY_ADDRESS_FOR_A_GIVEN_MODE $85
+
-
.alias FX_READ_TEXT_CURSOR_POSITION_POS_AND_VPOS $86
+
-
.alias FX_READ_CHARACTER_AT_CURSOR_POSITION $87
+
-
.alias FX_PERFORM_CODE $88
+
-
.alias FX_PERFORM_MOTOR $89
+
-
.alias FX_INSERT_VALUE_INTO_BUFFER $8A
+
-
.alias FX_PERFORM_OPT $8B
+
-
.alias FX_PERFORM_TAPE $8C
+
-
.alias FX_PERFORM_ROM $8D
+
-
.alias FX_ENTER_LANGUAGE_ROM $8E
+
-
.alias FX_ISSUE_PAGED_ROM_SERVICE_REQUEST $8F
+
-
.alias FX_PERFORM_TV $90
+
-
.alias FX_GET_CHARACTER_FROM_BUFFER $91
+
-
.alias FX_READ_FROM_FRED__MHZ_BUS $92
+
-
.alias FX_WRITE_TO_FRED__MHZ_BUS $93
+
-
.alias FX_READ_FROM_JIM__MHZ_BUS $94
+
-
.alias FX_WRITE_TO_JIM__MHZ_BUS $95
+
-
.alias FX_READ_FROM_SHEILA_MAPPED_IO $96
+
-
.alias FX_WRITE_TO_SHEILA_MAPPED_IO $97
+
-
.alias FX_EXAMINE_BUFFER_STATUS $98
+
-
.alias FX_INSERT_CHARACTER_INTO_INPUT_BUFFER $99
+
-
.alias FX_WRITE_TO_VIDEO_ULA_CONTROL_REGISTER_AND_COPY $9A
+
-
.alias FX_WRITE_TO_VIDEO_ULA_PALETTE_REGISTER_AND_COPY $9B
+
-
.alias FX_RW__CONTROL_REGISTER_AND_COPY $9C
+
-
.alias FX_FAST_TUBE_BPUT $9D
+
-
.alias FX_READ_FROM_SPEECH_PROCESSOR $9E
+
-
.alias FX_WRITE_TO_SPEECH_PROCESSOR $9F
+
-
.alias FX_READ_VDU_VARIABLE_VALUE $A0
+
-
.alias FX_READ_START_ADDRESS_OF_OS_VARIABLES_LOW_BYTE $A6
+
-
.alias FX_READ_START_ADDRESS_OF_OS_VARIABLES_HIGH_BYTE $A7
+
-
.alias FX_READ_ADDRESS_OF_ROM_POINTER_TABLE_LOW_BYTE $A8
+
-
.alias FX_READ_ADDRESS_OF_ROM_POINTER_TABLE_HIGH_BYTE $A9
+
-
.alias FX_READ_ADDRESS_OF_ROM_INFORMATION_TABLE_LOW_BYTE $AA
+
-
.alias FX_READ_ADDRESS_OF_ROM_INFORMATION_TABLE_HIGH_BYTE $AB
+
-
.alias FX_READ_ADDRESS_OF_KEY_TRANSLATION_TABLE_LOW_BYTE $AC
+
-
.alias FX_READ_ADDRESS_OF_KEY_TRANSLATION_TABLE_HIGH_BYTE $AD
+
-
.alias FX_READ_START_ADDRESS_OF_OS_VDU_VARIABLES_LOW_BYTE $AE
+
-
.alias FX_READ_START_ADDRESS_OF_OS_VDU_VARIABLES_HIGH_BYTE $AF
+
-
.alias FX_RW_CFS_TIMEOUT_COUNTER $B0
+
-
.alias FX_RW_INPUT_SOURCE $B1
+
-
.alias FX_RW_KEYBOARD_SEMAPHORE $B2
+
-
.alias FX_RW_PRIMARY_OSHWM $B3
+
-
.alias FX_RW_CURRENT_OSHWM $B4
+
-
.alias FX_RW_RS_MODE $B5
+
-
.alias FX_READ_CHARACTER_DEFINITION_EXPLOSION_STATE $B6
+
-
.alias FX_RW_CASSETTEROM_FILING_SYSTEM_SWITCH $B7
+
-
.alias FX_READ_RAM_COPY_OF_VIDEO_ULA_CONTROL_REGISTER $B8
+
-
.alias FX_READ_RAM_COPY_OF_VIDEO_ULA_PALETTE_REGISTER $B9
+
-
.alias FX_RW_ROM_NUMBER_ACTIVE_AT_LAST_BRK_ERROR $BA
+
-
.alias FX_RW_NUMBER_OF_ROM_SOCKET_CONTAINING_BASIC $BB
+
-
.alias FX_READ_CURRENT_ADC_CHANNEL $BC
+
-
.alias FX_RW_MAXIMUM_ADC_CHANNEL_NUMBER $BD
+
-
.alias FX_READ_ADC_CONVERSION_TYPE $BE
+
-
.alias FX_RW_RS_USE_FLAG $BF
+
-
.alias FX_READ_RS_CONTROL_FLAG $C0
+
-
.alias FX_RW_FLASH_COUNTER $C1
+
-
.alias FX_RW_MARK_PERIOD_COUNT $C2
+
-
.alias FX_RW_SPACE_PERIOD_COUNT $C3
+
-
.alias FX_RW_KEYBOARD_AUTOREPEAT_DELAY $C4
+
-
.alias FX_RW_KEYBOARD_AUTOREPEAT_PERIOD $C5
+
-
.alias FX_RW_EXEC_FILE_HANDLE $C6
+
-
.alias FX_RW_SPOOL_FILE_HANDLE $C7
+
-
.alias FX_RW_ESCAPE_BREAK_EFFECT $C8
+
-
.alias FX_RW_ECONET_KEYBOARD_DISABLE $C9
+
-
.alias FX_RW_KEYBOARD_STATUS_BYTE $CA
+
-
.alias FX_RW_RS_HANDSHAKE_EXTENT $CB
+
-
.alias FX_RW_RS_INPUT_SUPPRESSION_FLAG $CC
+
-
.alias FX_RW_CASSETTERS_SELECTION_FLAG $CD
+
-
.alias FX_RW_ECONET_OS_CALL_INTERCEPTION_STATUS $CE
+
-
.alias FX_RW_ECONET_OSRDCH_INTERCEPTION_STATUS $CF
+
-
.alias FX_RW_ECONET_OSWRCH_INTERCEPTION_STATUS $D0
+
-
.alias FX_RW_SPEECH_SUPPRESSION_STATUS $D1
+
-
.alias FX_RW_SOUND_SUPPRESSION_STATUS $D2
+
-
.alias FX_RW_BELL_CHANNEL $D3
+
-
.alias FX_RW_BELL_ENVELOPE_NUMBERAMPLITUDE $D4
+
-
.alias FX_RW_BELL_FREQUENCY $D5
+
-
.alias FX_RW_BELL_DURATION $D6
+
-
.alias FX_RW_STARTUP_MESSAGE_AND_BOOT_OPTIONS $D7
+
-
.alias FX_RW_LENGTH_OF_SOFT_KEY_STRING $D8
+
-
.alias FX_RW_NUMBER_OF_LINES_PRINTED_SINCE_LAST_PAGE $D9
+
-
.alias FX_RW_NUMBER_OF_ITEMS_IN_VDU_QUEUE $DA
+
-
.alias FX_RW_TAB_CHARACTER_VALUE $DB
+
-
.alias FX_RW_ESCAPE_CHARACTER_VALUE $DC
+
-
.alias FX_RW_CHARACTER_CO_TO_CF_STATUS $DD
+
-
.alias FX_RW_CHARACTER_DO_TO_DF_STATUS $DE
+
-
.alias FX_RW_CHARACTER_EO_TO_EF_STATUS $DF
+
-
.alias FX_RW_CHARACTER_FO_TO_FF_STATUS $E0
+
-
.alias FX_RW_FUNCTION_KEY_STATUS $E1
+
-
.alias FX_RW_SHIFT_FUNCTION_KEY_STATUS $E2
+
-
.alias FX_RW_CTRLFUNCTION_KEY_STATUS $E3
+
-
.alias FX_RW_CTRLSHIFTFUNCTION_KEY_STATUS $E4
+
-
.alias FX_RW_ESCAPE_KEY_STATUS $E5
+
-
.alias FX_RW_FLAGS_DETERMINING_ESCAPE_EFFECTS $E6
+
-
.alias FX_RW_JRQ_BIT_MASK_FOR_USER_ $E7
+
-
.alias FX_RW_IRQ_BIT_MASK_FOR_ $E8
+
-
.alias FX_RW_IRQ_BIT_MASK_FOR_SYSTEM_S $E9
+
-
.alias FX_READ_FLAG_INDICATING_TUBE_PRESENCE $EA
+
-
.alias FX_READ_FLAG_INDICATING_SPEECH_PROCESSOR_PRESENCE $EB
+
-
.alias FX_RW_WRITE_CHARACTER_DESTINATION_STATUS $EC
+
-
.alias FX_RW_CURSOR_EDITING_STATUS $ED
+
-
.alias FX_RW_LOCATION_E_NOT_USED_BY__ $EE
+
-
.alias FX_RW_LOCATION_F_NOT_USED_BY__ $EF
+
-
.alias FX_RW_LOCATION__NOT_USED_BY__ $F0
+
-
.alias FX_RW_LOCATION__USED_BY_FX_ $F1
+
-
.alias FX_READ_RAM_COPY_OF_SERIAL_PROCESSOR_ULA $F2
+
-
.alias FX_RW_TIMER_SWITCH_STATE $F3
+
-
.alias FX_RW_SOFT_KEY_CONSISTENCY_FLAG $F4
+
-
.alias FX_RW_PRINTER_DESTINATION_FLAG $F5
+
-
.alias FX_RW_CHARACTER_IGNORED_BY_PRINTER $F6
+
-
.alias FX_RW_FIRST_BYTE_OF_BREAK_INTERCEPT_CODE $F7
+
-
.alias FX_RW_SECOND_BYTE_OF_BREAK_INTERCEPT_CODE $F8
+
-
.alias FX_RW_THIRD_BYTE_OF_BREAK_INTERCEPT_CODE $F9
+
-
.alias FX_RW_LOCATION_A_NOT_USED_BY__ $FA
+
-
.alias FX_RW_LOCATION_B_NOT_USED_BY__ $FB
+
-
.alias FX_RW_CURRENT_LANGUAGE_ROM_NUMBER $FC
+
-
.alias FX_RW_LAST_BREAK_TYPE $FD
+
-
.alias FX_RW_AVAILABLE_RAM $FE
+
-
.alias FX_RW_START_UP_OPTIONS $FF
+
-
.alias MuteFlag $74
+
-
.alias SoundIndex $75
+
-
.alias MissFirstSound $76
+
-
.alias IRQVECL $204
+
-
.alias IRQVECH $205
+
-
+
-
.alias osbyte $fff4
+
-
.alias osword $fff1
+
-
.alias oswrch $ffee
+
-
+
-
;-------------------------------------------------------------------------------
+
-
; Functionality
+
-
;-------------------------------------------------------------------------------
+
-
+
-
+
-
_MAKE_SOUND:
+
-
+
-
+
-
STA SoundIndex ;0E9E] 85 84
+
-
LDA MuteFlag ;[0EA0] AD 2D 2F
+
-
BNE bra_0EE6 ;[0EA3] D0 41
+
-
TXA ;[0EA5] 8A
+
-
PHA ;//[0EA6] 48
+
-
TYA ;//[0EA7] 98
+
-
PHA ;//[0EA8] 48
+
-
LDX SoundIndex ;//[0EA9] A6 84
+
-
LDA SoundSync,X ;//[0EAB] BD 08 22
+
-
STA SoundIndex ;//[0EAE] 85 84
+
bra_0EB0:
bra_0EB0:
-
LDA SoundSync,X ;//[0EB0] BD 08 22
+
LDA SoundSync,X ;//[0EB0] BD 08 22
-
STA SoundBlock1 ;//[0EB3] 8D 01 22
+
STA SoundBlock1 ;//[0EB3] 8D 01 22
-
LDA SoundChannel,X ;//[0EB6] BD 14 22
+
LDA SoundChannel,X ;//[0EB6] BD 14 22
-
STA SoundBlock ;//[0EB9] 8D 00 22
+
STA SoundBlock ;//[0EB9] 8D 00 22
-
LDY #$02 ;//[0EBC] A0 02
+
LDY #$02 ;//[0EBC] A0 02
-
LDA SoundVolumeEnv,X ;//[0EBE] BD 20 22
+
LDA SoundVolumeEnv,X ;//[0EBE] BD 20 22
-
JSR _STORE_SOUND_WORD ;//[0EC1] 20 E7 0E
+
JSR _STORE_SOUND_WORD ;//[0EC1] 20 E7 0E
-
LDA SoundPitch,X ;//[0EC4] BD 2C 22
+
LDA SoundPitch,X ;//[0EC4] BD 2C 22
-
JSR _STORE_SOUND_WORD ;//[0EC7] 20 E7 0E
+
JSR _STORE_SOUND_WORD ;//[0EC7] 20 E7 0E
-
LDA SoundDuration,X ;//[0ECA] BD 38 22
+
LDA SoundDuration,X ;//[0ECA] BD 38 22
-
JSR _STORE_SOUND_WORD ;//[0ECD] 20 E7 0E
+
JSR _STORE_SOUND_WORD ;//[0ECD] 20 E7 0E
-
TXA ;//[0ED0] 8A
+
TXA ;//[0ED0] 8A
-
PHA ;//[0ED1] 48
+
PHA ;//[0ED1] 48
-
LDX #<SoundBlock ;//[0ED2] A2 00
+
LDX #<SoundBlock ;//[0ED2] A2 00
-
LDY #>SoundBlock ;//[0ED4] A0 22
+
LDY #>SoundBlock ;//[0ED4] A0 22
-
LDA #OSW_SOUND ;//[0ED6] A9 07
+
LDA #OSW_SOUND ;//[0ED6] A9 07
-
JSR osword ;//[0ED8] 20 F1 FF
+
JSR osword ;//[0ED8] 20 F1 FF
-
PLA ;//[0EDB] 68
+
PLA ;//[0EDB] 68
-
TAX ;//[0EDC] AA
+
TAX ;//[0EDC] AA
-
INX ;//[0EDD] E8
+
INX ;//[0EDD] E8
-
DEC SoundIndex ;//[0EDE] C6 84
+
DEC SoundIndex ;//[0EDE] C6 84
-
BPL bra_0EB0 ;//[0EE0] 10 CE
+
BPL bra_0EB0 ;//[0EE0] 10 CE
-
PLA ;//[0EE2] 68
+
PLA ;//[0EE2] 68
-
TAY ;//[0EE3] A8
+
TAY ;//[0EE3] A8
-
PLA ;//[0EE4] 68
+
PLA ;//[0EE4] 68
-
TAX ;//[0EE5] AA
+
TAX ;//[0EE5] AA
bra_0EE6:
bra_0EE6:
-
RTS ;//[0EE6] 60
+
RTS ;//[0EE6] 60
_STORE_SOUND_WORD:
_STORE_SOUND_WORD:
-
STA SoundBlock,Y ;//[0EE7] 99 00 22
+
STA SoundBlock,Y ;//[0EE7] 99 00 22
-
INY ;//[0EEA] C8
+
INY ;//[0EEA] C8
ASL ;//[0EEB] 0A
ASL ;//[0EEB] 0A
-
LDA #$00 ;//[0EEC] A9 00
+
LDA #$00 ;//[0EEC] A9 00
-
BCC bra_0EF2 ;//[0EEE] 90 02
+
BCC bra_0EF2 ;//[0EEE] 90 02
-
LDA #$FF ;//[0EF0] A9 FF
+
LDA #$FF ;//[0EF0] A9 FF
bra_0EF2:
bra_0EF2:
-
STA SoundBlock,Y ;//[0EF2] 99 00 22
+
STA SoundBlock,Y ;//[0EF2] 99 00 22
-
INY ;//[0EF5] C8
+
INY ;//[0EF5] C8
-
RTS ;//[0EF6] 60
+
RTS ;//[0EF6] 60
-
+
 
SoundBlock:
SoundBlock:
-
.byte $13 ;//[2200] .
+
.byte $13 ;//[2200] .
-
+
 
SoundBlock1:
SoundBlock1:
-
.byte $00 ;//[2201] .
+
.byte $00 ;//[2201] .
-
.byte $F1 ;//[2202] .
+
.byte $F1 ;//[2202] .
-
.byte $FF ;//[2203] .
+
.byte $FF ;//[2203] .
-
.byte $04 ;//[2204] .
+
.byte $04 ;//[2204] .
-
.byte $00 ;//[2205] .
+
.byte $00 ;//[2205] .
-
.byte $01 ;//[2206] .
+
.byte $01 ;//[2206] .
-
.byte $00 ;//[2207] .
+
.byte $00 ;//[2207] .
SoundSync:
SoundSync:
-
.byte $00 ;//[2208] .
+
.byte $00 ;//[2208] .
-
.byte $00 ;//[2209] .
+
.byte $00 ;//[2209] .
-
.byte $01 ;//[220A] .
+
.byte $01 ;//[220A] .
-
.byte $01 ;//[220B] .
+
.byte $01 ;//[220B] .
-
.byte $01 ;//[220C] .
+
.byte $01 ;//[220C] .
-
.byte $01 ;//[220D] .
+
.byte $01 ;//[220D] .
-
.byte $00 ;//[220E] .
+
.byte $00 ;//[220E] .
-
.byte $00 ;//[220F] .
+
.byte $00 ;//[220F] .
-
.byte $00 ;//[2210] .
+
.byte $00 ;//[2210] .
-
.byte $00 ;//[2211] .
+
.byte $00 ;//[2211] .
-
.byte $00 ;//[2212] .
+
.byte $00 ;//[2212] .
-
.byte $00 ;//[2213] .
+
.byte $00 ;//[2213] .
SoundChannel:
SoundChannel:
-
.byte $12 ;//[2214] .
+
.byte $12 ;//[2214] .
-
.byte $13 ;//[2215] .
+
.byte $13 ;//[2215] .
-
.byte $11 ;//[2216] .
+
.byte $11 ;//[2216] .
-
.byte $10 ;//[2217] .
+
.byte $10 ;//[2217] .
-
.byte $11 ;//[2218] .
+
.byte $11 ;//[2218] .
-
.byte $10 ;//[2219] .
+
.byte $10 ;//[2219] .
-
.byte $12 ;//[221A] .
+
.byte $12 ;//[221A] .
-
.byte $13 ;//[221B] .
+
.byte $13 ;//[221B] .
-
.byte $13 ;//[221C] .
+
.byte $13 ;//[221C] .
-
.byte $13 ;//[221D] .
+
.byte $13 ;//[221D] .
-
.byte $13 ;//[221E] .
+
.byte $13 ;//[221E] .
-
.byte $13 ;//[221F] .
+
.byte $13 ;//[221F] .
SoundVolumeEnv:
SoundVolumeEnv:
-
.byte $01 ;//[2220] .
+
.byte $01 ;//[2220] .
-
.byte $F1 ;//[2221] .
+
.byte $F1 ;//[2221] .
-
.byte $02 ;//[2222] .
+
.byte $02 ;//[2222] .
-
.byte $03 ;//[2223] .
+
.byte $03 ;//[2223] .
-
.byte $02 ;//[2224] .
+
.byte $02 ;//[2224] .
-
.byte $F1 ;//[2225] .
+
.byte $F1 ;//[2225] .
-
.byte $01 ;//[2226] .
+
.byte $01 ;//[2226] .
-
.byte $04 ;//[2227] .
+
.byte $04 ;//[2227] .
-
.byte $00 ;//[2228] .
+
.byte $00 ;//[2228] .
-
.byte $F1 ;//[2229] .
+
.byte $F1 ;//[2229] .
-
.byte $F1 ;//[222A] .
+
.byte $F1 ;//[222A] .
-
.byte $04 ;//[222B] .
+
.byte $04 ;//[222B] .
SoundPitch:
SoundPitch:
-
.byte $64 ;//[222C] d
+
.byte $64 ;//[222C] d
-
.byte $C8 ;//[222D] .
+
.byte $C8 ;//[222D] .
-
.byte $50 ;//[222E] P
+
.byte $50 ;//[222E] P
-
.byte $07 ;//[222F] .
+
.byte $07 ;//[222F] .
-
.byte $50 ;//[2230] P
+
.byte $50 ;//[2230] P
-
.byte $07 ;//[2231] .
+
.byte $07 ;//[2231] .
-
.byte $AA ;//[2232] .
+
.byte $AA ;//[2232] .
-
.byte $78 ;//[2233] x
+
.byte $78 ;//[2233] x
-
.byte $00 ;//[2234] .
+
.byte $00 ;//[2234] .
-
.byte $00 ;//[2235] .
+
.byte $00 ;//[2235] .
-
.byte $04 ;//[2236] .
+
.byte $04 ;//[2236] .
-
.byte $96 ;//[2237] .
+
.byte $96 ;//[2237] .
SoundDuration:
SoundDuration:
-
.byte $0A ;//[2238] .
+
.byte $0A ;//[2238] .
-
.byte $02 ;//[2239] .
+
.byte $02 ;//[2239] .
-
.byte $FF ;//[223A] .
+
.byte $FF ;//[223A] .
-
.byte $0A ;//[223B] .
+
.byte $0A ;//[223B] .
-
.byte $FF ;//[223C] .
+
.byte $FF ;//[223C] .
-
.byte $04 ;//[223D] .
+
.byte $04 ;//[223D] .
-
.byte $0A ;//[223E] .
+
.byte $0A ;//[223E] .
-
.byte $FF ;//[223F] .
+
.byte $FF ;//[223F] .
-
.byte $01 ;//[2240] .
+
.byte $01 ;//[2240] .
-
.byte $01 ;//[2241] .
+
.byte $01 ;//[2241] .
-
.byte $01 ;//[2242] .
+
.byte $01 ;//[2242] .
-
.byte $FF ;//[2243] .
+
.byte $FF ;//[2243] .
-
+
Env1:
Env1:
-
.byte $01,$02,$ff,$fe,$ff,$0a,$0a,$32,$7e,$fc,$fc,$fc,$7e,$00
+
.byte $01,$02,$ff,$fe,$ff,$0a,$0a,$32,$7e,$fc,$fc,$fc,$7e,$00
Env2:
Env2:
-
.byte $02,$02,$04,$00,$FC,$0A,$0A,$0A,$01,$00,$00,$00,$01,$01
+
.byte $02,$02,$04,$00,$FC,$0A,$0A,$0A,$01,$00,$00,$00,$01,$01
Env3:
Env3:
-
.byte $03,$04,$00,$00,$00,$01,$01,$01,$7e,$fc,$ff,$fc,$7e,$50
+
.byte $03,$04,$00,$00,$00,$01,$01,$01,$7e,$fc,$ff,$fc,$7e,$50
Env4:
Env4:
-
.byte $04,$01,$08,$04,$f4,$04,$04,$04,$64,$00,$00,$00,$64,$64
+
.byte $04,$01,$08,$04,$f4,$04,$04,$04,$64,$00,$00,$00,$64,$64
_INITSOUND:
_INITSOUND:
-
LDA #VDU_MODE ;//[2FF0] A9 16
+
LDA #VDU_MODE ;//[2FF0] A9 16
-
JSR oswrch ;//[2FF2] 20 EE FF
+
JSR oswrch ;//[2FF2] 20 EE FF
-
LDA #VDU_ENABLE_PRINTER ;//[2FF5] A9 02
+
LDA #VDU_ENABLE_PRINTER ;//[2FF5] A9 02
-
JSR oswrch ;//[2FF7] 20 EE FF
+
JSR oswrch ;//[2FF7] 20 EE FF
-
LDA #0
+
LDA #0
-
STA MuteFlag
+
STA MuteFlag
-
+
 
-
LDX #<Env1 ;//[0ED2] A2 00
+
LDX #<Env1 ;//[0ED2] A2 00
-
LDY #>Env1 ;//[0ED4] A0 22
+
LDY #>Env1 ;//[0ED4] A0 22
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
-
JSR osword ;//[0ED8] 20 F1 FF
+
JSR osword ;//[0ED8] 20 F1 FF
-
+
-
LDX #<Env2 ;//[0ED2] A2 00
+
LDX #<Env2 ;//[0ED2] A2 00
-
LDY #>Env2 ;//[0ED4] A0 22
+
LDY #>Env2 ;//[0ED4] A0 22
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
-
JSR osword ;//[0ED8] 20 F1 FF
+
JSR osword ;//[0ED8] 20 F1 FF
-
LDX #<Env3 ;//[0ED2] A2 00
+
LDX #<Env3 ;//[0ED2] A2 00
-
LDY #>Env3 ;//[0ED4] A0 22
+
LDY #>Env3 ;//[0ED4] A0 22
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
-
JSR osword ;//[0ED8] 20 F1 FF
+
JSR osword ;//[0ED8] 20 F1 FF
-
LDX #<Env4 ;//[0ED2] A2 00
+
LDX #<Env4 ;//[0ED2] A2 00
-
LDY #>Env4 ;//[0ED4] A0 22
+
LDY #>Env4 ;//[0ED4] A0 22
-
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
+
LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
-
JSR osword ;//[0ED8] 20 F1 FF
+
JSR osword ;//[0ED8] 20 F1 FF
-
RTS
+
RTS

Current revision

Sparse Invaders Source - Sound.txt 

   ;-------------------------------------------------------------------------------
   ;  Sound  - Invaders ...
   ;  Written by PJ for use within Invaders.
   ;
   ;  Copyright 2008,2009 Neil Beresford
   ;
   ;    This file is part of Sparse Invaders.
   ;    Sparse Invaders is free software: you can redistribute it and/or modify
   ;    it under the terms of the GNU General Public License as published by
   ;    the Free Software Foundation, either version 3 of the License, or
   ;    (at your option) any later version.
   ;
   ;    Sparse Invaders is distributed in the hope that it will be useful,
   ;    but WITHOUT ANY WARRANTY; without even the implied warranty of
   ;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   ;    GNU General Public License for more details.
   ;
   ;    You should have received a copy of the GNU General Public License
   ;    along with Sparse Invaders.  If not, see <http://www.gnu.org/licenses/>.
   ;
   ;
   ;-------------------------------------------------------------------------------


   ;-----------------------------
   ;
   ;		VDU CODES
   ;
   ;-----------------------------
   .alias VDU_NULL	$00
   .alias VDU_TO_PRINTER	$01
   .alias VDU_ENABLE_PRINTER	$02
   .alias VDU_DISABLE_PRINTER	$03
   .alias VDU_WRITE_TEXT	$04
   .alias VDU_WRITE_TEXT_GFX	$05
   .alias VDU_ENABLE	$06
   .alias VDU_BEEP	$07
   .alias VDU_CURSOR_BACK	$08
   .alias VDU_CURSOR_FWD	$09
   .alias VDU_CURSOR_DOWN	$0A
   .alias VDU_CURSOR_UP	$0B
   .alias VDU_CLEAR_TEXT	$0C
   .alias VDU_RETURN	$0D
   .alias VDU_PAGED_MODE_ON	$0E
   .alias VDU_PAGED_MODE_OFF	$0F
   .alias VDU_CLEAR_GFX	$10
   .alias VDU_TEXT_COLOUR	$11
   .alias VDU_GFX_COLOUR	$12
   .alias VDU_LOGICAL_COLOUR	$13
   .alias VDU_DEFAULT_LOGICAL_COLOURS	$14
   .alias VDU_DISABLE	$15
   .alias VDU_MODE	$16
   .alias VDU_PROGRAM_DISPLAY_CHAR	$17
   .alias VDU_GFX_WINDOW	$18
   .alias VDU_PLOT	$19
   .alias VDU_RESTORE_WINDOW	$1A
   .alias VDU_ESCAPE	$1B
   .alias VDU_TEXT_WINDOW	$1C
   .alias VDU_GFX_ORIGIN	$1D
   .alias VDU_CURSOR_HOME	$1E
   .alias VDU_MOVE_CURSOR	$1F
   ;-----------------------------
   ;
   ;		OSWORD
   ;
   ;-----------------------------
   .alias OSW_READ_LINE	$00
   .alias OSW_READ_SYS_CLOCK	$01
   .alias OSW_WRITE_SYS_CLOCK	$02
   .alias OSW_READ_TIMER	$03
   .alias OSW_WRITE_TIMER	$04
   .alias OSW_READ_IO_BYTE	$05
   .alias OSW_WRITE_IO_BYTE	$06
   .alias OSW_SOUND	$07
   .alias OSW_DEFINE_ENVELOPE	$08
   .alias OSW_READ_PIXEL	$09
   .alias OSW_READ_CHARACTER_DEFN	$0A
   .alias OSW_READ_PALETTE	$0B
   .alias OSW_WRITE_PALETTE	$0C
   .alias OSW_READ_CURSOR	$0D
   ;-----------------------------
   ;
   ;		INKEY
   ;
   ;-----------------------------
   .alias INKEY_SPACE	$9D
   .alias INKEY_SLASH_QUESTION	$87
   .alias INKEY_X	$BD
   .alias INKEY_Z	$9E
   .alias INKEY_A	$BE
   .alias INKEY_COMMA_LESSTHAN	$99
   .alias INKEY_PERIOD_GREATERTHAN	$98
   .alias INKEY_RETURN	$B6
   ;-----------------------------
   ;
   ;		OSBYTE
   ;
   ;-----------------------------
   .alias FX_PRINT_OPERATING_SYSTEM_VERSION	$00
   .alias FX_USER_OSBYTE_CALL_RW_LOCATION_	$01
   .alias FX_SELECT_INPUT_STREAM	$02
   .alias FX_SELECT_OUTPUT_STREAM	$03
   .alias FX_ENABLEDISABLE_CURSOR_EDITING	$04
   .alias FX_SELECT_PRINTER_DESTINATION	$05
   .alias FX_SET_CHARACTER_IGNORED_BY_PRINTER	$06
   .alias FX_SET_RS_BAUD_RATE_FOR_RECEIVING_DATA	$07
   .alias FX_SET_RS_BAUD_RATE_FOR_DATA_TRANSMISSION	$08
   .alias FX_SET_FLASHING_COLOUR_MARK_STATE_DURATION	$09
   .alias FX_SET_FLASHING_COLOUR_SPACE_STATE_DURATION	$0A
   .alias FX_SET_KEYBOARD_AUTOREPEAT_DELAY_INTERVAL	$0B
   .alias FX_SET_KEYBOARD_AUTOREPEAT_RATE	$0C
   .alias FX_DISABLE_EVENTS	$0D
   .alias FX_ENABLE_EVENTS	$0E
   .alias FX_FLUSH_SELECTED_BUFFER_CLASS	$0F
   .alias FX_SELECT_ADC_CHANNELS_TO_BE_SAMPLED	$10
   .alias FX_FORCE_AN_ADC_CONVERSION	$11
   .alias FX_RESET_SOFT_KEYS	$12
   .alias FX_WAIT_FOR_VERTICAL_SYNC	$13
   .alias FX_EXPLODE_SOFT_CHARACTER_RAM_ALLOCATION	$14
   .alias FX_FLUSH_SPECIFIC_BUFFER	$15
   .alias FX_READ_VDU_STATUS	$75
   .alias FX_REFLECT_KEYBOARD_STATUS_IN_LEDS	$76
   .alias FX_CLOSE_ANY_SPOOL_OR_EXEC_FILES	$77
   .alias FX_WRITE_CURRENT_KEYS_PRESSED_INFORMATION	$78
   .alias FX_PERFORM_KEYBOARD_SCAN	$79
   .alias FX_PERFORM_KEYBOARD_SCAN_FROM__	$7A
   .alias FX_INFORM_OS_PRINTER_DRIVER_GOING_DORMANT	$7B
   .alias FX_CLEAR_ESCAPE_CONDITION	$7C
   .alias FX_SET_ESCAPE_CONDITION	$7D
   .alias FX_ACKNOWLEDGE_DETECTION_OF_ESCAPE_CONDITION	$7E
   .alias FX_CHECK_FOR_EOF_ON_AN_OPEN_FILE	$7F
   .alias FX_READ_ADC_CHANNEL_OR_GET_BUFFER_STATUS	$80
   .alias FX_READ_KEY_WITH_TIME_LIMIT	$81
   .alias FX_READ_MACHINE_HIGH_ORDER_ADDRESS	$82
   .alias FX_READ_TOP_OF_OS_RAM_ADDRESS_OSHWM	$83
   .alias FX_READ_BOTTOM_OF_DISPLAY_RAM_ADDRESS_HIMEM	$84
   .alias FX_READ_BOTTOM_OF_DISPLAY_ADDRESS_FOR_A_GIVEN_MODE	$85
   .alias FX_READ_TEXT_CURSOR_POSITION_POS_AND_VPOS	$86
   .alias FX_READ_CHARACTER_AT_CURSOR_POSITION	$87
   .alias FX_PERFORM_CODE	$88
   .alias FX_PERFORM_MOTOR	$89
   .alias FX_INSERT_VALUE_INTO_BUFFER	$8A
   .alias FX_PERFORM_OPT	$8B
   .alias FX_PERFORM_TAPE	$8C
   .alias FX_PERFORM_ROM	$8D
   .alias FX_ENTER_LANGUAGE_ROM	$8E
   .alias FX_ISSUE_PAGED_ROM_SERVICE_REQUEST	$8F
   .alias FX_PERFORM_TV	$90
   .alias FX_GET_CHARACTER_FROM_BUFFER	$91
   .alias FX_READ_FROM_FRED__MHZ_BUS	$92
   .alias FX_WRITE_TO_FRED__MHZ_BUS	$93
   .alias FX_READ_FROM_JIM__MHZ_BUS	$94
   .alias FX_WRITE_TO_JIM__MHZ_BUS	$95
   .alias FX_READ_FROM_SHEILA_MAPPED_IO	$96
   .alias FX_WRITE_TO_SHEILA_MAPPED_IO	$97
   .alias FX_EXAMINE_BUFFER_STATUS	$98
   .alias FX_INSERT_CHARACTER_INTO_INPUT_BUFFER	$99
   .alias FX_WRITE_TO_VIDEO_ULA_CONTROL_REGISTER_AND_COPY	$9A
   .alias FX_WRITE_TO_VIDEO_ULA_PALETTE_REGISTER_AND_COPY	$9B
   .alias FX_RW__CONTROL_REGISTER_AND_COPY	$9C
   .alias FX_FAST_TUBE_BPUT	$9D
   .alias FX_READ_FROM_SPEECH_PROCESSOR	$9E
   .alias FX_WRITE_TO_SPEECH_PROCESSOR	$9F
   .alias FX_READ_VDU_VARIABLE_VALUE	$A0
   .alias FX_READ_START_ADDRESS_OF_OS_VARIABLES_LOW_BYTE	$A6
   .alias FX_READ_START_ADDRESS_OF_OS_VARIABLES_HIGH_BYTE	$A7
   .alias FX_READ_ADDRESS_OF_ROM_POINTER_TABLE_LOW_BYTE	$A8
   .alias FX_READ_ADDRESS_OF_ROM_POINTER_TABLE_HIGH_BYTE	$A9
   .alias FX_READ_ADDRESS_OF_ROM_INFORMATION_TABLE_LOW_BYTE	$AA
   .alias FX_READ_ADDRESS_OF_ROM_INFORMATION_TABLE_HIGH_BYTE	$AB
   .alias FX_READ_ADDRESS_OF_KEY_TRANSLATION_TABLE_LOW_BYTE	$AC
   .alias FX_READ_ADDRESS_OF_KEY_TRANSLATION_TABLE_HIGH_BYTE	$AD
   .alias FX_READ_START_ADDRESS_OF_OS_VDU_VARIABLES_LOW_BYTE	$AE
   .alias FX_READ_START_ADDRESS_OF_OS_VDU_VARIABLES_HIGH_BYTE	$AF
   .alias FX_RW_CFS_TIMEOUT_COUNTER	$B0
   .alias FX_RW_INPUT_SOURCE	$B1
   .alias FX_RW_KEYBOARD_SEMAPHORE	$B2
   .alias FX_RW_PRIMARY_OSHWM	$B3
   .alias FX_RW_CURRENT_OSHWM	$B4
   .alias FX_RW_RS_MODE	$B5
   .alias FX_READ_CHARACTER_DEFINITION_EXPLOSION_STATE	$B6
   .alias FX_RW_CASSETTEROM_FILING_SYSTEM_SWITCH	$B7
   .alias FX_READ_RAM_COPY_OF_VIDEO_ULA_CONTROL_REGISTER	$B8
   .alias FX_READ_RAM_COPY_OF_VIDEO_ULA_PALETTE_REGISTER	$B9
   .alias FX_RW_ROM_NUMBER_ACTIVE_AT_LAST_BRK_ERROR	$BA
   .alias FX_RW_NUMBER_OF_ROM_SOCKET_CONTAINING_BASIC	$BB
   .alias FX_READ_CURRENT_ADC_CHANNEL	$BC
   .alias FX_RW_MAXIMUM_ADC_CHANNEL_NUMBER	$BD
   .alias FX_READ_ADC_CONVERSION_TYPE	$BE
   .alias FX_RW_RS_USE_FLAG	$BF
   .alias FX_READ_RS_CONTROL_FLAG	$C0
   .alias FX_RW_FLASH_COUNTER	$C1
   .alias FX_RW_MARK_PERIOD_COUNT	$C2
   .alias FX_RW_SPACE_PERIOD_COUNT	$C3
   .alias FX_RW_KEYBOARD_AUTOREPEAT_DELAY	$C4
   .alias FX_RW_KEYBOARD_AUTOREPEAT_PERIOD	$C5
   .alias FX_RW_EXEC_FILE_HANDLE	$C6
   .alias FX_RW_SPOOL_FILE_HANDLE	$C7
   .alias FX_RW_ESCAPE_BREAK_EFFECT	$C8
   .alias FX_RW_ECONET_KEYBOARD_DISABLE	$C9
   .alias FX_RW_KEYBOARD_STATUS_BYTE	$CA
   .alias FX_RW_RS_HANDSHAKE_EXTENT	$CB
   .alias FX_RW_RS_INPUT_SUPPRESSION_FLAG	$CC
   .alias FX_RW_CASSETTERS_SELECTION_FLAG	$CD
   .alias FX_RW_ECONET_OS_CALL_INTERCEPTION_STATUS	$CE
   .alias FX_RW_ECONET_OSRDCH_INTERCEPTION_STATUS	$CF
   .alias FX_RW_ECONET_OSWRCH_INTERCEPTION_STATUS	$D0
   .alias FX_RW_SPEECH_SUPPRESSION_STATUS	$D1
   .alias FX_RW_SOUND_SUPPRESSION_STATUS	$D2
   .alias FX_RW_BELL_CHANNEL	$D3
   .alias FX_RW_BELL_ENVELOPE_NUMBERAMPLITUDE	$D4
   .alias FX_RW_BELL_FREQUENCY	$D5
   .alias FX_RW_BELL_DURATION	$D6
   .alias FX_RW_STARTUP_MESSAGE_AND_BOOT_OPTIONS	$D7
   .alias FX_RW_LENGTH_OF_SOFT_KEY_STRING	$D8
   .alias FX_RW_NUMBER_OF_LINES_PRINTED_SINCE_LAST_PAGE	$D9
   .alias FX_RW_NUMBER_OF_ITEMS_IN_VDU_QUEUE	$DA
   .alias FX_RW_TAB_CHARACTER_VALUE	$DB
   .alias FX_RW_ESCAPE_CHARACTER_VALUE	$DC
   .alias FX_RW_CHARACTER_CO_TO_CF_STATUS	$DD
   .alias FX_RW_CHARACTER_DO_TO_DF_STATUS	$DE
   .alias FX_RW_CHARACTER_EO_TO_EF_STATUS	$DF
   .alias FX_RW_CHARACTER_FO_TO_FF_STATUS	$E0
   .alias FX_RW_FUNCTION_KEY_STATUS	$E1
   .alias FX_RW_SHIFT_FUNCTION_KEY_STATUS	$E2
   .alias FX_RW_CTRLFUNCTION_KEY_STATUS	$E3
   .alias FX_RW_CTRLSHIFTFUNCTION_KEY_STATUS	$E4
   .alias FX_RW_ESCAPE_KEY_STATUS	$E5
   .alias FX_RW_FLAGS_DETERMINING_ESCAPE_EFFECTS	$E6
   .alias FX_RW_JRQ_BIT_MASK_FOR_USER_	$E7
   .alias FX_RW_IRQ_BIT_MASK_FOR_	$E8
   .alias FX_RW_IRQ_BIT_MASK_FOR_SYSTEM_S	$E9
   .alias FX_READ_FLAG_INDICATING_TUBE_PRESENCE	$EA
   .alias FX_READ_FLAG_INDICATING_SPEECH_PROCESSOR_PRESENCE	$EB
   .alias FX_RW_WRITE_CHARACTER_DESTINATION_STATUS	$EC
   .alias FX_RW_CURSOR_EDITING_STATUS	$ED
   .alias FX_RW_LOCATION_E_NOT_USED_BY__	$EE
   .alias FX_RW_LOCATION_F_NOT_USED_BY__	$EF
   .alias FX_RW_LOCATION__NOT_USED_BY__	$F0
   .alias FX_RW_LOCATION__USED_BY_FX_	$F1
   .alias FX_READ_RAM_COPY_OF_SERIAL_PROCESSOR_ULA	$F2
   .alias FX_RW_TIMER_SWITCH_STATE	$F3
   .alias FX_RW_SOFT_KEY_CONSISTENCY_FLAG	$F4
   .alias FX_RW_PRINTER_DESTINATION_FLAG	$F5
   .alias FX_RW_CHARACTER_IGNORED_BY_PRINTER	$F6
   .alias FX_RW_FIRST_BYTE_OF_BREAK_INTERCEPT_CODE	$F7
   .alias FX_RW_SECOND_BYTE_OF_BREAK_INTERCEPT_CODE	$F8
   .alias FX_RW_THIRD_BYTE_OF_BREAK_INTERCEPT_CODE	$F9
   .alias FX_RW_LOCATION_A_NOT_USED_BY__	$FA
   .alias FX_RW_LOCATION_B_NOT_USED_BY__	$FB
   .alias FX_RW_CURRENT_LANGUAGE_ROM_NUMBER	$FC
   .alias FX_RW_LAST_BREAK_TYPE	$FD
   .alias FX_RW_AVAILABLE_RAM	$FE
   .alias FX_RW_START_UP_OPTIONS	$FF
   .alias MuteFlag  $74
   .alias SoundIndex $75
   .alias MissFirstSound $76
   .alias IRQVECL $204
   .alias IRQVECH $205

   .alias osbyte $fff4
   .alias osword $fff1
   .alias oswrch $ffee

   ;-------------------------------------------------------------------------------
   ; Functionality 
   ;-------------------------------------------------------------------------------


   _MAKE_SOUND:


       STA SoundIndex		;//[0E9E] 85 84
       LDA MuteFlag		;//[0EA0] AD 2D 2F
       BNE bra_0EE6		;//[0EA3] D0 41
       TXA 		;//[0EA5] 8A
       PHA 		;//[0EA6] 48
       TYA 		;//[0EA7] 98
       PHA 		;//[0EA8] 48
       LDX SoundIndex		;//[0EA9] A6 84
       LDA SoundSync,X		;//[0EAB] BD 08 22
       STA SoundIndex		;//[0EAE] 85 84

   bra_0EB0:
       LDA SoundSync,X		;//[0EB0] BD 08 22
       STA SoundBlock1		;//[0EB3] 8D 01 22
       LDA SoundChannel,X		;//[0EB6] BD 14 22
       STA SoundBlock		;//[0EB9] 8D 00 22
       LDY #$02		;//[0EBC] A0 02
       LDA SoundVolumeEnv,X		;//[0EBE] BD 20 22
       JSR _STORE_SOUND_WORD		;//[0EC1] 20 E7 0E
       LDA SoundPitch,X		;//[0EC4] BD 2C 22
       JSR _STORE_SOUND_WORD		;//[0EC7] 20 E7 0E
       LDA SoundDuration,X		;//[0ECA] BD 38 22
       JSR _STORE_SOUND_WORD		;//[0ECD] 20 E7 0E
       TXA 		;//[0ED0] 8A
       PHA 		;//[0ED1] 48
       LDX #<SoundBlock		;//[0ED2] A2 00
       LDY #>SoundBlock		;//[0ED4] A0 22
       LDA #OSW_SOUND		;//[0ED6] A9 07
       JSR osword		;//[0ED8] 20 F1 FF
       PLA 		;//[0EDB] 68
       TAX 		;//[0EDC] AA
       INX 		;//[0EDD] E8
       DEC SoundIndex		;//[0EDE] C6 84
       BPL bra_0EB0		;//[0EE0] 10 CE
       PLA 		;//[0EE2] 68
       TAY 		;//[0EE3] A8
       PLA 		;//[0EE4] 68
       TAX 		;//[0EE5] AA

   bra_0EE6:
       RTS 		;//[0EE6] 60

   _STORE_SOUND_WORD:
       STA SoundBlock,Y		;//[0EE7] 99 00 22
       INY 		;//[0EEA] C8
     ASL 		;//[0EEB] 0A
       LDA #$00		;//[0EEC] A9 00
       BCC bra_0EF2		;//[0EEE] 90 02
       LDA #$FF		;//[0EF0] A9 FF

   bra_0EF2:
       STA SoundBlock,Y		;//[0EF2] 99 00 22
       INY 		;//[0EF5] C8
       RTS 		;//[0EF6] 60

   SoundBlock:
       .byte $13		;//[2200] .

   SoundBlock1:
       .byte $00		;//[2201] .
       .byte $F1		;//[2202] .
       .byte $FF		;//[2203] .
       .byte $04		;//[2204] .
       .byte $00		;//[2205] .
       .byte $01		;//[2206] .
       .byte $00		;//[2207] .

   SoundSync:
       .byte $00		;//[2208] .
       .byte $00		;//[2209] .
       .byte $01		;//[220A] .
       .byte $01		;//[220B] .
       .byte $01		;//[220C] .
       .byte $01		;//[220D] .
       .byte $00		;//[220E] .
       .byte $00		;//[220F] .
       .byte $00		;//[2210] .
       .byte $00		;//[2211] .
       .byte $00		;//[2212] .
       .byte $00		;//[2213] .

   SoundChannel:
       .byte $12		;//[2214] .
       .byte $13		;//[2215] .
       .byte $11		;//[2216] .
       .byte $10		;//[2217] .
       .byte $11		;//[2218] .
       .byte $10		;//[2219] .
       .byte $12		;//[221A] .
       .byte $13		;//[221B] .
       .byte $13		;//[221C] .
       .byte $13		;//[221D] .
       .byte $13		;//[221E] .
       .byte $13		;//[221F] .

   SoundVolumeEnv:
       .byte $01		;//[2220] .
       .byte $F1		;//[2221] .
       .byte $02		;//[2222] .
       .byte $03		;//[2223] .
       .byte $02		;//[2224] .
       .byte $F1		;//[2225] .
       .byte $01		;//[2226] .
       .byte $04		;//[2227] .
       .byte $00		;//[2228] .
       .byte $F1		;//[2229] .
       .byte $F1		;//[222A] .
       .byte $04		;//[222B] .

   SoundPitch:
       .byte $64		;//[222C] d
       .byte $C8		;//[222D] .
       .byte $50		;//[222E] P
       .byte $07		;//[222F] .
       .byte $50		;//[2230] P
       .byte $07		;//[2231] .
       .byte $AA		;//[2232] .
       .byte $78		;//[2233] x
       .byte $00		;//[2234] .
       .byte $00		;//[2235] .
       .byte $04		;//[2236] .
       .byte $96		;//[2237] .

   SoundDuration:
       .byte $0A		;//[2238] .
       .byte $02		;//[2239] .
       .byte $FF		;//[223A] .
       .byte $0A		;//[223B] .
       .byte $FF		;//[223C] .
       .byte $04		;//[223D] .
       .byte $0A		;//[223E] .
       .byte $FF		;//[223F] .
       .byte $01		;//[2240] .
       .byte $01		;//[2241] .
       .byte $01		;//[2242] .
       .byte $FF		;//[2243] .
 
   Env1:
       .byte $01,$02,$ff,$fe,$ff,$0a,$0a,$32,$7e,$fc,$fc,$fc,$7e,$00
   Env2:
       .byte $02,$02,$04,$00,$FC,$0A,$0A,$0A,$01,$00,$00,$00,$01,$01
   Env3:

.byte $03,$04,$00,$00,$00,$01,$01,$01,$7e,$fc,$ff,$fc,$7e,$50 

   Env4:
       .byte $04,$01,$08,$04,$f4,$04,$04,$04,$64,$00,$00,$00,$64,$64

   _INITSOUND:

       LDA #VDU_MODE		;//[2FF0] A9 16
       JSR oswrch		;//[2FF2] 20 EE FF
       LDA #VDU_ENABLE_PRINTER		;//[2FF5] A9 02
       JSR oswrch		;//[2FF7] 20 EE FF
       LDA	#0
       STA 	MuteFlag

       LDX #<Env1		;//[0ED2] A2 00
       LDY #>Env1		;//[0ED4] A0 22
       LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
       JSR osword		;//[0ED8] 20 F1 FF
       
       LDX #<Env2		;//[0ED2] A2 00
       LDY #>Env2		;//[0ED4] A0 22
       LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
       JSR osword		;//[0ED8] 20 F1 FF

       LDX #<Env3		;//[0ED2] A2 00
       LDY #>Env3		;//[0ED4] A0 22
       LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
       JSR osword		;//[0ED8] 20 F1 FF

       LDX #<Env4		;//[0ED2] A2 00
       LDY #>Env4		;//[0ED4] A0 22
       LDA #OSW_DEFINE_ENVELOPE ;//[0ED6] A9 07
       JSR osword		;//[0ED8] 20 F1 FF

       RTS
Retrieved from "http://www.retrosoftware.co.uk/wiki/index.php/Sparse_Invaders_Source_-_Sound.txt"