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nsd_dpcm

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shaw02 edited this page Sep 6, 2019 · 2 revisions

Structure Reference: nsd_dpcm

Define

nsd.inc (Include file for C language)

typedef struct{
    char        Control;            /*  I/O 0x4010  */
    char        DA;                 /*  I/O 0x4011  */
    char        Address;            /*  I/O 0x4012  */
    char        Size;               /*  I/O 0x4013  */
} nsd_dpcm;

nsd.h (Include file for assembly language)

.Struct nsd_dpcm
        Control         .byte       ;I/O 0x4010
        DA              .byte       ;I/O 0x4011
        Address         .byte       ;I/O 0x4012
        Size            .byte       ;I/O 0x4013
.ifdef  DPCMBank
        Bank            .byte       ;Bank number
        Next            .byte       ;Next number(note)
.endif
.Endstruct

Members

  • Control for the control register address 0x4010.
  • DA for the control register address 0x4011.
  • Address for the control register address 0x4012.
  • Size for the control register address 0x4013.

Contents

MML compiler nsc.exe will convert the DPCM{} command into this structure nsd_dpcm when comile the MML file.
In this structre, there is the delta pcm information about each note.
First is note C1, Secound is note C#1, and etc...

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