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sim_imd.h
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sim_imd.h
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/*************************************************************************
* *
* Copyright (c) 2007-2022 Howard M. Harte. *
* https://github.com/hharte *
* *
* Permission is hereby granted, free of charge, to any person obtaining *
* a copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to *
* the following conditions: *
* *
* The above copyright notice and this permission notice shall be *
* included in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON- *
* INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE *
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN *
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN *
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE *
* SOFTWARE. *
* *
* Except as contained in this notice, the names of The Authors shall *
* not be used in advertising or otherwise to promote the sale, use or *
* other dealings in this Software without prior written authorization *
* from the Authors. *
* *
* Module Description: *
* ImageDisk Disk Image File access module for SIMH, definitions. *
* See: http://dunfield.classiccmp.org/img/index.htm *
* for details on the ImageDisk format and other utilities. *
* *
*************************************************************************/
#ifndef SIM_IMD_H_
#define SIM_IMD_H_ 0
#include "sim_defs.h"
typedef struct {
uint8 mode;
uint8 cyl;
uint8 head;
uint8 nsects;
uint8 sectsize;
} IMD_HEADER;
#define IMD_FLAG_SECT_HEAD_MAP (1 << 6)
#define IMD_FLAG_SECT_CYL_MAP (1 << 7)
#define SECT_RECORD_UNAVAILABLE 0 /* Data could not be read from the original media */
#define SECT_RECORD_NORM 1 /* Normal Data */
#define SECT_RECORD_NORM_COMP 2 /* Compressed Normal Data */
#define SECT_RECORD_NORM_DAM 3 /* Normal Data with deleted address mark */
#define SECT_RECORD_NORM_DAM_COMP 4 /* Compressed Normal Data with deleted address mark */
#define SECT_RECORD_NORM_ERR 5 /* Normal Data */
#define SECT_RECORD_NORM_COMP_ERR 6 /* Compressed Normal Data */
#define SECT_RECORD_NORM_DAM_ERR 7 /* Normal Data with deleted address mark */
#define SECT_RECORD_NORM_DAM_COMP_ERR 8 /* Compressed Normal Data with deleted address mark */
#define MAX_CYL 80
#define MAX_HEAD 2
#define MAX_SPT 26
#define FD_FLAG_WRITELOCK 1
#define IMD_DISK_IO_ERROR_GENERAL (1 << 0) /* General data error. */
#define IMD_DISK_IO_ERROR_CRC (1 << 1) /* Data read/written, but got a CRC error. */
#define IMD_DISK_IO_DELETED_ADDR_MARK (1 << 2) /* Sector had a deleted address mark */
#define IMD_DISK_IO_COMPRESSED (1 << 3) /* Sector is compressed in the IMD file (Read Only) */
#define IMD_DISK_IO_ERROR_WPROT (1 << 4) /* Disk is write protected */
#define IMD_MODE_500K_FM 0
#define IMD_MODE_300K_FM 1
#define IMD_MODE_250K_FM 2
#define IMD_MODE_500K_MFM 3
#define IMD_MODE_300K_MFM 4
#define IMD_MODE_250K_MFM 5
#define IMD_MAX_SECTSIZE 6
#define IMD_MODE_FM(x) (x <= IMD_MODE_250K_FM)
#define IMD_MODE_MFM(x) (x >= IMD_MODE_500K_MFM)
#define IMAGE_TYPE_DSK 1 /* Flat binary "DSK" image file. */
#define IMAGE_TYPE_IMD 2 /* ImageDisk "IMD" image file. */
#define IMAGE_TYPE_CPT 3 /* CP/M Transfer "CPT" image file. */
typedef struct {
uint8 mode;
uint8 nsects;
uint32 sectsize;
uint32 sectorOffsetMap[MAX_SPT];
uint8 start_sector;
uint8 logicalHead[MAX_SPT];
uint8 logicalCyl[MAX_SPT];
} TRACK_INFO;
typedef struct {
FILE *file;
uint32 ntracks;
uint8 nsides;
uint8 flags;
DEVICE *device;
uint32 debugmask;
uint32 verbosedebugmask;
TRACK_INFO track[MAX_CYL][MAX_HEAD];
} DISK_INFO;
extern DISK_INFO *diskOpen(FILE *fileref, uint32 isVerbose);
extern DISK_INFO *diskOpenEx(FILE *fileref, uint32 isVerbose, DEVICE *device, uint32 debugmask, uint32 verbosedebugmask);
extern t_stat diskClose(DISK_INFO **myDisk);
extern t_stat diskCreate(FILE *fileref, const char *ctlr_comment);
extern uint32 imdGetSides(DISK_INFO *myDisk);
extern uint32 imdIsWriteLocked(DISK_INFO *myDisk);
extern t_stat sectSeek(DISK_INFO *myDisk, uint32 Cyl, uint32 Head);
extern t_stat sectRead(DISK_INFO *myDisk, uint32 Cyl, uint32 Head, uint32 Sector, uint8 *buf, uint32 buflen, uint32 *flags, uint32 *readlen);
extern t_stat sectWrite(DISK_INFO *myDisk, uint32 Cyl, uint32 Head, uint32 Sector, uint8 *buf, uint32 buflen, uint32 *flags, uint32 *writelen);
extern t_stat trackWrite(DISK_INFO *myDisk,
uint32 Cyl,
uint32 Head,
uint32 numSectors,
uint32 sectorLen,
uint8 *sectorMap,
uint8 mode,
uint8 fillbyte,
uint32 *flags);
extern t_stat assignDiskType(UNIT *uptr);
#endif