Return to hdc.h CVS log

Up to [HATARI the Atari ST Emulator] / hatari / src / includes

Annotation of hatari/src/includes/hdc.h, revision 1.1

1.1     ! root        1: /*
        !             2:   Hatari
        !             3:   
        !             4:   This file contains definitios used for hardware-level
        !             5:   harddrive emulation
        !             6: 
        !             7: */
        !             8: 
        !             9: 
        !            10: /* HD Command packet macros */
        !            11: #define HD_OPCODE(a) (a.command[0] & 0x1F)             /* get opcode (bit 0-4) */
        !            12: #define HD_CONTROLLER(a) ((a.command[0] & 0xE0)>>5)    /* get HD controller # (5-7) */
        !            13: #define HD_DRIVENUM(a) ((a.command[1] & 0xE0) >>5)     /* get drive # (5-7) */
        !            14: 
        !            15: #define HD_LBA_MSB(a) ((unsigned) a.command[1] & 0x1F) /* Logical Block adress, MSB */
        !            16: #define HD_LBA_MID(a) ((unsigned) a.command[2])        /* Logical Block adress */
        !            17: #define HD_LBA_LSB(a) ((unsigned) a.command[3])        /* Logical Block adress, LSB */
        !            18: 
        !            19: #define HD_SECTORCOUNT(a) (a.command[4] & 0xFF)        /* get sector count */
        !            20: #define HD_CONTROL(a) (a.command[5] & 0xFF)            /* get control byte */
        !            21: 
        !            22: 
        !            23: /* Opcodes */
        !            24: /* The following are multi-sector transfers with seek implied */
        !            25: #define HD_VERIFY_TRACK    0x05               /* Verify track */
        !            26: #define HD_FORMAT_TRACK    0x06               /* Format track */
        !            27: #define HD_READ_SECTOR     0x08               /* Read sector */
        !            28: #define HD_WRITE_SECTOR    0x0A               /* Write sector */
        !            29: 
        !            30: /* other codes */
        !            31: #define HD_SEEK            0x0B               /* Seek */
        !            32: #define HD_CORRECTION      0x0D               /* Correction */
        !            33: #define HD_INQUIRY         0x12               /* Inquiry */
        !            34: #define HD_MODESENSE       0x1A               /* Mode sense */
        !            35: #define HD_REQ_SENSE       0x03               /* Request sense */
        !            36: #define HD_SHIP            0x1B               /* Ship drive */
        !            37: 
        !            38: #define HD_STATUS_OK          0               /* OK return status */
        !            39: #define HD_STATUS_NODRIVE  0x25               /* Invalid drive */
        !            40: #define HD_STATUS_OPCODE   0x20               /* Opcode not supported */
        !            41: 
        !            42: #define ACSI_EMU_ON         (nPartitions != 0) 
        !            43: /* do we have hdc emulation */
        !            44: /* 
        !            45:    Structure representing an ACSI command block.
        !            46: */
        !            47: typedef struct {
        !            48:   int byteCount;         /* count of number of command bytes written */
        !            49:   unsigned char command[6]; 
        !            50:   short int returnCode;  /* return code from the HDC operation */
        !            51: } HDCOMMAND;
        !            52: 
        !            53: extern FILE *hd_image_file;
        !            54: extern HDCOMMAND HDCCommand;
        !            55: extern short int HDCSectorCount;
        !            56: extern int nPartitions;
        !            57: 
        !            58: extern void HDC_WriteCommandPacket();
        !            59: extern void HDC_DebugCommandPacket();
        !            60: extern void HDC_EmulateCommandPacket();

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.