Sound: BDRO13

       Name: BDRO13                                                  [Show more]
       Type: Subroutine
   Category: Sound
    Summary: Process music command <#13 v1 v2 v3> to set value1, value2, value3
             to the voice control register values for commands <#1> to <#3>
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * BDJMPTBH calls BDRO13
             * BDJMPTBL calls BDRO13


.BDRO13

 JSR BDlab19            ; Increment the music data pointer in BDdataptr1(1 0)
                        ; and fetch the next music data byte into A

 STA value1             ; Set value1 to the value of the byte we just fetched,
                        ; which is used to set the voice control register for
                        ; voice 1 in command <#1>

 JSR BDlab19            ; Increment the music data pointer in BDdataptr1(1 0)
                        ; and fetch the next music data byte into A

 STA value2             ; Set value2 to the value of the byte we just fetched,
                        ; which is used to set the voice control register for
                        ; voice 2 in command <#2>

 JSR BDlab19            ; Increment the music data pointer in BDdataptr1(1 0)
                        ; and fetch the next music data byte into A

 STA value3             ; Set value3 to the value of the byte we just fetched,
                        ; which is used to set the voice control register for
                        ; voice 3 in command <#3>

 JMP BDskip1            ; Jump to BDskip1 to process the next nibble of music
                        ; data