mirror of https://github.com/nmlgc/ReC98.git
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/* ReC98
|
||
* -----
|
||
* Function numbers for the PMD and MMD drivers, according to PMDDATA.DOC and
|
||
* MMDFUNC.DOC. Functions prefixed with KAJA are available in both drivers.
|
||
* Only includes functions that are actually used in the games.
|
||
*/
|
||
|
||
#include "platform.h"
|
||
|
||
typedef enum {
|
||
KAJA_SONG_PLAY = 0x00,
|
||
KAJA_SONG_STOP = 0x01,
|
||
KAJA_SONG_FADE = 0x02,
|
||
KAJA_GET_SONG_MEASURE = 0x05,
|
||
KAJA_GET_SONG_ADDRESS = 0x06,
|
||
KAJA_GET_VOLUME = 0x08,
|
||
|
||
// Returns the type of PMD driver in AL, as well as its version in DX.
|
||
// AL values relevant for PC-98 Touhou:
|
||
// • AL = 0xFF: Resident but no sound source
|
||
// • AL = 0x00: PMD.COM (for PC-9801-26K / OPN)
|
||
// • AL ≥ 0x01: Any other driver compatible to the PC-9801-86 / OPNA
|
||
PMD_GET_DRIVER_TYPE_AND_VERSION = 0x09,
|
||
|
||
PMD_GET_SE_ADDRESS = 0x0B,
|
||
PMD_SE_PLAY = 0x0C,
|
||
PMD_GET_WORKAREA_ADDRESS = 0x10,
|
||
|
||
// Returns the sizes of the song (AL), instrument (AH), and sound effect
|
||
// (DL) buffers, in KiB. These can be customized on the PMD command line
|
||
// with the /M, /V and /E options respectively.
|
||
PMD_GET_BUFFER_SIZES = 0x22,
|
||
} kaja_func_t;
|
||
|
||
#define PMD 0x60
|
||
#define MMD 0x61
|
||
|
||
// Memory structure of a KAJA interrupt service routine, pointed to by its
|
||
// address stored in the x86 interrupt vector. Used for identifying whether
|
||
// PMD or MMD are installed at a certain IRQ#, by checking [magic].
|
||
typedef struct {
|
||
uint8_t jmp[2]; // JMP to the code
|
||
uint8_t magic[3]; // "PMD" or "MMD"
|
||
} kaja_isr_t;
|
||
|
||
#define kaja_isr_magic_matches(isr, magic1, magic2, magic3) \
|
||
(((kaja_isr_t *)(isr))->magic[0] == magic1) && \
|
||
(((kaja_isr_t *)(isr))->magic[1] == magic2) && \
|
||
(((kaja_isr_t *)(isr))->magic[2] == magic3)
|
||
|
||
// MMDFUNC.DOC and https://gist.github.com/devinacker/bdc58cfdba6a1ee80449
|
||
// both imply that this is a hardcoded property of the MMD format
|
||
#define MMD_TICKS_PER_QUARTER_NOTE 48
|
||
|
||
// Work area structure names and fields taken from pmdwin.h
|
||
// --------------------------------------------------------
|
||
#define ONKAI_REST (-1)
|
||
#define ONKAI_OCTAVE_MASK (0xF0)
|
||
#define ONKAI_NOTE_MASK (0x0F)
|
||
|
||
// 演奏中のデータエリア
|
||
typedef struct qqtag {
|
||
|
||
// 演奏中のアドレス (曲データ先頭番地+1からのoffset)
|
||
unsigned char near *address;
|
||
// 演奏が終わった時の戻り先アドレス (同上)
|
||
unsigned char near *partloop;
|
||
// 現在発音中の音符の 残り Length 値;
|
||
unsigned char leng;
|
||
// gatetime値。gatetime ≧ 残りLength が成立した時点で、Keyoff
|
||
unsigned char qdat;
|
||
|
||
// (TH05 doesn't use those and we can't know the signedness of a lot of
|
||
// these, so...)
|
||
char dummy[79];
|
||
|
||
// 演奏中の音階 オクターブ×16 + 音階(c～b=0～11),rest=255
|
||
char onkai;
|
||
} QQ;
|
||
|
||
typedef struct OpenWorktag {
|
||
QQ near *FMPart[6];
|
||
QQ near *SSGPart[3];
|
||
QQ near *PCMPart[1];
|
||
QQ near *RhythmPart[1];
|
||
} OPEN_WORK;
|
||
// --------------------------------------------------------
|