/************************************/
/* */
/* MIDIC - 0S/2 device driver */
/* Header File copyright */
/* IBM 1991 */
/* */
/* */
/* */
/* This header file contains the */
/* required OS/2 device driver */
/* structures for the Drive header */
/* the Request Header, the INIT_IN */
/* packet, the INIT_OUT packet,and */
/* for this particular device */
/* driver, also the ReadWrite pack- */
/* et. */
/* */
/************************************/
void near last_code();
extern void near STRAT();
extern void near ReadBytes(unsigned long,
unsigned long,
unsigned short);
extern void near WriteBytes(unsigned long,
unsigned long,
unsigned short);
extern void near int3();
extern void near SetIRQ(unsigned short,
void near *,
unsigned short);
extern void near INT_HNDLR();
extern int pascal far DOSPUTMESSAGE(unsigned int,
unsigned int,
unsigned char far *);
#define MIDI_DATA 0x0330
#define MIDI_CMD 0x0331
#define DUMB_MODE 0x003f
#define MPU_RESET 0x00ff
#define DAW_CHR 0x8000
#define DAW_IDC 0x4000
#define DAW_IBM 0x2000
#define DAW_SHR 0x1000
#define DAW_OPN 0x0800
#define DAW_LEVEL 0x0080
#define DAW_GIO 0x0040
#define DAW_CLK 0x0008
#define DAW_NUL 0x0004
#define DAW_SCR 0x0002
#define DAW_KBD 0x0001
#define ERR 0x8000
#define DEV 0x4000
#define BUSY 0x0200
#define DONE 0x0100
#define INIT 0x00
#define MEDIA_CHECK 0x01
#define BUILD_BPB 0x02
#define READ 0x04
#define READ_NO_WAIT 0x05
#define INPUT_STATUS 0x06
#define INPUT_FLUSH 0x07
#define WRITE 0x08
#define WRITE_VERIFY 0x09
#define OUTPUT_STATUS 0x0a
#define OUTPUT_FLUSH 0x0b
#define OPEN 0x0d
#define CLOSE 0x0e
#define REMOVABLE 0x0f
#define IOCTL 0x10
#define RESET 0x11
#define GET_DRIVE_MAP 0x12
#define SET_DRIVE_MAP 0x13
#define DEINSTALL 0x14
#define PARTITIONABLE 0x16
#define GET_FIXED_MAP 0x17
typedef struct DeviceHdr {
struct DeviceHdr far *PtrNextHdr; /* -1, no more */
unsigned short HdrAttr; /* hdr attribute */
void near *Strat; /* offset of_strat */
void near *IDC; /* offset of IDC */
unsigned char name[8]; /* name of driver */
char reserved[8]; /* reserved. */
} DeviceHeader;
typedef struct RQpacket {
unsigned char req_pac_len; /* length of packet */
unsigned char req_unit; /* use for BLOCK DD */
unsigned char req_cmd; /* which command... */
unsigned short req_stat; /* returned status. */
unsigned long req_resrvd; /* for use by OS/2. */
unsigned long req_link; /* used for queueing*/
} ReqHeader;
typedef struct InitEnt {
ReqHeader InitEntHdr; /* space for header */
unsigned char units; /* number of units. */
unsigned char far *DevHlp; /* Address of DevHlp*/
unsigned char far *InitCmd; /* ptr to commands. */
unsigned short drive; /* drive # block DD */
} InitEntry;
typedef struct InitExt {
ReqHeader InitExtHdr; /* space for header */
unsigned char units; /* number of units. */
unsigned short code_off; /* offset of code. */
unsigned short data_off; /* offset of data. */
unsigned char far *BPBptr; /* address of BPB. */
} InitExit;
typedef struct Read {
ReqHeader ReadHdr; /* space for header */
unsigned char media_des; /* media descriptor */
unsigned long buff_addr; /* physical address */
unsigned short count; /* number of bytes */
unsigned long start_sel; /* starting sel # */
unsigned short reserved; /* for use by OS/2 */
} DeviceRead;
typedef struct Write {
ReqHeader WriteHdr; /* space for header */
unsigned char media_des; /* media descriptor */
unsigned long buff_addr; /* physical address */
unsigned short count; /* number of bytes */
unsigned long start_sel; /* starting sel # */
unsigned short reserved; /* for use by OS/2 */
} DeviceWrite;
/* End of File */