/* * vdrive.h - Virtual disk-drive implementation. * * Written by * Andreas Boose * * Multi-drive and DHD enhancements by * Roberto Muscedere * * This file is part of VICE, the Versatile Commodore Emulator. * See README for copyright notice. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA. * */ #ifndef VICE_VDRIVE_H #define VICE_VDRIVE_H #include "types.h" #include "vdrive-dir.h" #define NUM_DRIVES 2 #define VDRIVE_PART_SUPPORTED(a) (vdrive->ptype[a]>=1 && vdrive->ptype[a]<=4) #define VDRIVE_IS_FD(a) (a->image && (a->image->type == DISK_IMAGE_TYPE_D1M || a->image->type == DISK_IMAGE_TYPE_D2M || a->image->type == DISK_IMAGE_TYPE_D4M )) #define VDRIVE_IS_HD(a) (a->image && (a->image->type == DISK_IMAGE_TYPE_DHD)) #define VDRIVE_IS_READONLY(a) (a->image_mode > 0) /* High level disk formats. They can be different than the disk image type. */ #define VDRIVE_IMAGE_FORMAT_1541 0 #define VDRIVE_IMAGE_FORMAT_1571 1 #define VDRIVE_IMAGE_FORMAT_1581 2 #define VDRIVE_IMAGE_FORMAT_8050 3 /* Dual Disk Drive */ #define VDRIVE_IMAGE_FORMAT_8250 4 /* Dual Disk Drive */ #define VDRIVE_IMAGE_FORMAT_2040 5 /* Dual Disk Drive */ #define VDRIVE_IMAGE_FORMAT_NP 6 #define VDRIVE_IMAGE_FORMAT_SYS 7 #define VDRIVE_IMAGE_FORMAT_9000 8 #define VDRIVE_IMAGE_FORMAT_NONE 10 #define BUFFER_NOT_IN_USE 0 #define BUFFER_DIRECTORY_READ 1 #define BUFFER_SEQUENTIAL 2 #define BUFFER_MEMORY_BUFFER 3 #define BUFFER_RELATIVE 4 #define BUFFER_COMMAND_CHANNEL 5 #define BUFFER_PARTITION_READ 6 #define BUFFER_DIRECTORY_MORE_READ 7 #define VDRIVE_BAM_MAX_STATES 33 #define WRITE_BLOCK 512 #define SET_LO_HI(p, val) \ do { \ *((p)++) = (val) & 0xff; \ *((p)++) = ((val) >> 8) & 0xff; \ } while (0) #define DRIVE_RAMSIZE 0x400 #define BAM_MAXSIZE (VDRIVE_BAM_MAX_STATES * 256) /* Serial Error Codes. */ #define SERIAL_OK 0 #define SERIAL_WRITE_TIMEOUT 1 #define SERIAL_READ_TIMEOUT 2 #define SERIAL_FILE_NOT_FOUND 64 /* EOF */ #define SERIAL_NO_DEVICE 128 #define SERIAL_ERROR (2) #define SERIAL_EOF (0x40) #define SERIAL_DEVICE_NOT_PRESENT (0x80) typedef struct bufferinfo_s { unsigned int mode; /* Mode on this buffer */ unsigned int readmode; /* Is this channel for reading or writing */ uint8_t *buffer; /* Use this to save data */ uint8_t *slot; /* Save data for directory-slot */ unsigned int bufptr; /* Use this to save/read data to disk */ unsigned int track; /* which track is allocated for this sector */ unsigned int sector; /* (for write files only) */ unsigned int length; /* Directory-read length */ unsigned int record; /* Current record */ unsigned int partition;/* Current partition */ unsigned int partstart; /* for 1581's: partition (and BAM) can be different for open files */ unsigned int partend; int small; /* flag to enable small buffer reads on seq type files */ int timemode; /* flag to enable time output on dir listings */ vdrive_dir_context_t dir; /* directory listing context or directory entry */ /* REL file information stored in buffers since we can have more than one open */ uint8_t *side_sector; /* location of the side sectors */ uint8_t *side_sector_track; uint8_t *side_sector_sector; uint8_t *super_side_sector; /* location of the super side sector */ uint8_t super_side_sector_track; uint8_t super_side_sector_sector; uint8_t *buffer_next; /* next buffer for rel file */ unsigned int track_next; /* track for the next sector */ unsigned int sector_next; /* sector for the next sector */ unsigned int record_max; /* Max rel file record, inclusive */ unsigned int record_next; /* Buffer pointer to beginning of next record */ uint8_t *side_sector_needsupdate; uint8_t needsupdate; /* true if the current sector needs to be written (from REL write) */ uint8_t super_side_sector_needsupdate; /* similar to above */ } bufferinfo_t; struct disk_image_s; /* Run-time data struct for each drive. */ typedef struct vdrive_s { unsigned int unit; /* IEC bus device number */ struct disk_image_s *images[2]; /* for dual drives */ /* Current image file */ struct disk_image_s *image; int image_mode; /* -1 no disk, 0 is write/read, 1 is read */ unsigned int image_format; /* 1541/71/81 */ unsigned int Bam_Track; unsigned int Bam_Sector; unsigned int bam_name; /* Offset from start of BAM to disk name. */ unsigned int bam_id; /* Offset from start of BAM to disk ID. */ int bam_state[VDRIVE_BAM_MAX_STATES]; int bam_tracks[VDRIVE_BAM_MAX_STATES]; int bam_sectors[VDRIVE_BAM_MAX_STATES]; /* bam cache dirty (1 char per sector) */ /* -1 = not in mem, 0 = in mem, 1 = dirty */ unsigned int Header_Track; /* Directory header location */ unsigned int Header_Sector; unsigned int Dir_Track; /* First directory sector location */ unsigned int Dir_Sector; unsigned int num_tracks; /* CBM partition first and last track (1581) * Part_Start is 1, Part_End = num_tracks if no partition is used */ unsigned int Part_Start, Part_End; /* CMD paritions */ unsigned int current_offset; unsigned int sys_offset; signed int current_part; /* current part; one matching the bam loaded */ signed int selected_part; /* the "currently selected" partition, with CP command */ signed int default_part; /* the default one that is to be used on startup */ uint8_t ptype[256]; uint32_t poffset[256]; uint32_t psize[256]; unsigned int cheadertrack[256]; /* current header track and sector for each partition */ unsigned int cheadersector[256]; unsigned int cdirtrack[256]; /* current directory track and sector for each partition */ unsigned int cdirsector[256]; unsigned int cpartstart[256]; /* current partition start end and for each partition for 1581 */ unsigned int cpartend[256]; unsigned int d90toggle; /* D9090/60 new sector toggle */ int haspt; /* whether the connected disk supports partitions (not drives) */ int dir_part; /* which drive to show first when doing group dirs */ int dir_count; /* how many drives are left when doing group dirs */ int last_code; /* for command channel status string */ unsigned int bam_size; uint8_t *bam; /* Disk header blk (if any) followed by BAM blocks */ bufferinfo_t buffers[16]; /* Memory read command buffer. */ uint8_t mem_buf[256]; unsigned int mem_length; /* removed side sector data and placed it in buffer structure */ /* BYTE *side_sector; */ uint8_t ram[0x8000]; } vdrive_t; /* Actually, serial-code errors ... */ #define FLOPPY_COMMAND_OK 0 #define FLOPPY_ERROR 2 /* Return values used around. */ #define FD_OK 0 #define FD_EXIT 1 /* -1,0, 1 are fixed values */ #define FD_NOTREADY -2 #define FD_CHANGED -3 /* File has changed on disk */ #define FD_NOTRD -4 #define FD_NOTWRT -5 #define FD_WRTERR -6 #define FD_RDERR -7 #define FD_INCOMP -8 /* DOS Format Mismatch */ #define FD_BADIMAGE -9 /* ID mismatch (Disk or tape) */ #define FD_BADNAME -10 /* Illegal filename */ #define FD_BADVAL -11 /* Illegal value */ #define FD_BADDEV -12 #define FD_BAD_TS -13 /* Track or sector */ #define FD_BAD_TRKNUM -14 /* Illegal track number */ #define FD_BAD_SECNUM -15 /* Illegal sector number */ #define CHK_NUM 0 #define CHK_RDY 1 /* ------------------------------------------------------------------------- */ void vdrive_init(void); int vdrive_device_setup(vdrive_t *vdrive, unsigned int unit); void vdrive_device_shutdown(vdrive_t *vdrive); int vdrive_attach_image(struct disk_image_s *image, unsigned int unit, unsigned int drive, vdrive_t *vdrive); void vdrive_detach_image(struct disk_image_s *image, unsigned int unit, unsigned int drive, vdrive_t *vdrive); void vdrive_close_all_channels(vdrive_t *vdrive); void vdrive_close_all_channels_partition(vdrive_t *vdrive, int part); int vdrive_get_max_sectors(vdrive_t *vdrive, unsigned int track); int vdrive_get_max_sectors_per_head(vdrive_t *vdrive, unsigned int track); void vdrive_get_last_read(unsigned int *track, unsigned int *sector, uint8_t **buffer); void vdrive_set_last_read(unsigned int track, unsigned int sector, uint8_t *buffer); void vdrive_alloc_buffer(struct bufferinfo_s *p, int mode); void vdrive_free_buffer(struct bufferinfo_s *p); void vdrive_set_disk_geometry(vdrive_t *vdrive); int vdrive_read_sector(vdrive_t *vdrive, uint8_t *buf, unsigned int track, unsigned int sector); int vdrive_write_sector(vdrive_t *vdrive, const uint8_t *buf, unsigned int track, unsigned int sector); int vdrive_read_sector_physical(vdrive_t *vdrive, uint8_t *buf, unsigned int track, unsigned int sector); int vdrive_write_sector_physical(vdrive_t *vdrive, const uint8_t *buf, unsigned int track, unsigned int sector); struct disk_image_s *vdrive_get_image(vdrive_t *vdrive, unsigned int drive); void vdrive_refresh(unsigned int unit); void vdrive_flush(unsigned int unit); int vdrive_find_sys(vdrive_t *vdrive); int vdrive_read_partition_table(vdrive_t *vdrive); int vdrive_ispartvalid(vdrive_t *vdrive, int part); int vdrive_write_partition_table(vdrive_t *vdrive); int vdrive_pack_parts(vdrive_t *vdrive); int vdrive_switch(vdrive_t *vdrive, int part); int vdrive_realpart(vdrive_t *vdrive, int part); int vdrive_ext_read_sector(vdrive_t *vdrive, int drive, uint8_t *buf, unsigned int track, unsigned int sector); int vdrive_ext_write_sector(vdrive_t *vdrive, int drive, const uint8_t *buf, unsigned int track, unsigned int sector); #endif