| 1 | /*************************************************************************\r |
| 2 | * *\r |
| 3 | * $Id: sim_imd.h 1904 2008-05-21 06:57:57Z hharte $ *\r |
| 4 | * *\r |
| 5 | * Copyright (c) 2007-2008 Howard M. Harte. *\r |
| 6 | * http://www.hartetec.com *\r |
| 7 | * *\r |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining *\r |
| 9 | * a copy of this software and associated documentation files (the *\r |
| 10 | * "Software"), to deal in the Software without restriction, including *\r |
| 11 | * without limitation the rights to use, copy, modify, merge, publish, *\r |
| 12 | * distribute, sublicense, and/or sell copies of the Software, and to *\r |
| 13 | * permit persons to whom the Software is furnished to do so, subject to *\r |
| 14 | * the following conditions: *\r |
| 15 | * *\r |
| 16 | * The above copyright notice and this permission notice shall be *\r |
| 17 | * included in all copies or substantial portions of the Software. *\r |
| 18 | * *\r |
| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *\r |
| 20 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *\r |
| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND *\r |
| 22 | * NONINFRINGEMENT. IN NO EVENT SHALL HOWARD M. HARTE BE LIABLE FOR ANY *\r |
| 23 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, *\r |
| 24 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE *\r |
| 25 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *\r |
| 26 | * *\r |
| 27 | * Except as contained in this notice, the name of Howard M. Harte shall *\r |
| 28 | * not be used in advertising or otherwise to promote the sale, use or *\r |
| 29 | * other dealings in this Software without prior written authorization *\r |
| 30 | * Howard M. Harte. *\r |
| 31 | * *\r |
| 32 | * SIMH Interface based on altairz80_hdsk.c, by Peter Schorn. *\r |
| 33 | * *\r |
| 34 | * Module Description: *\r |
| 35 | * ImageDisk Disk Image File access module for SIMH, definitions. *\r |
| 36 | * see : *\r |
| 37 | * for details on the ImageDisk format and other utilities. *\r |
| 38 | * *\r |
| 39 | * Environment: *\r |
| 40 | * User mode only *\r |
| 41 | * *\r |
| 42 | *************************************************************************/\r |
| 43 | \r |
| 44 | typedef struct {\r |
| 45 | unsigned char mode;\r |
| 46 | unsigned char cyl;\r |
| 47 | unsigned char head;\r |
| 48 | unsigned char nsects;\r |
| 49 | unsigned char sectsize;\r |
| 50 | } IMD_HEADER;\r |
| 51 | \r |
| 52 | \r |
| 53 | #define IMD_FLAG_SECT_HEAD_MAP (1 << 6)\r |
| 54 | #define IMD_FLAG_SECT_CYL_MAP (1 << 7)\r |
| 55 | \r |
| 56 | #define SECT_RECORD_UNAVAILABLE 0 /* Data could not be read from the original media */\r |
| 57 | #define SECT_RECORD_NORM 1 /* Normal Data */\r |
| 58 | #define SECT_RECORD_NORM_COMP 2 /* Compressed Normal Data */\r |
| 59 | #define SECT_RECORD_NORM_DAM 3 /* Normal Data with deleted address mark */\r |
| 60 | #define SECT_RECORD_NORM_DAM_COMP 4 /* Compressed Normal Data with deleted address mark */\r |
| 61 | #define SECT_RECORD_NORM_ERR 5 /* Normal Data */\r |
| 62 | #define SECT_RECORD_NORM_COMP_ERR 6 /* Compressed Normal Data */\r |
| 63 | #define SECT_RECORD_NORM_DAM_ERR 7 /* Normal Data with deleted address mark */\r |
| 64 | #define SECT_RECORD_NORM_DAM_COMP_ERR 8 /* Compressed Normal Data with deleted address mark */\r |
| 65 | \r |
| 66 | #define MAX_CYL 80\r |
| 67 | #define MAX_HEAD 2\r |
| 68 | #define MAX_SPT 26\r |
| 69 | \r |
| 70 | #define FD_FLAG_WRITELOCK 1\r |
| 71 | \r |
| 72 | #define IMD_DISK_IO_ERROR_GENERAL (1 << 0) /* General data error. */\r |
| 73 | #define IMD_DISK_IO_ERROR_CRC (1 << 1) /* Data read/written, but got a CRC error. */\r |
| 74 | #define IMD_DISK_IO_DELETED_ADDR_MARK (1 << 2) /* Sector had a deleted address mark */\r |
| 75 | #define IMD_DISK_IO_COMPRESSED (1 << 3) /* Sector is compressed in the IMD file (Read Only) */\r |
| 76 | \r |
| 77 | #define IMD_MODE_500K_FM 0\r |
| 78 | #define IMD_MODE_300K_FM 1\r |
| 79 | #define IMD_MODE_250K_FM 2\r |
| 80 | #define IMD_MODE_500K_MFM 3\r |
| 81 | #define IMD_MODE_300K_MFM 4\r |
| 82 | #define IMD_MODE_250K_MFM 5\r |
| 83 | \r |
| 84 | #define IMD_MODE_FM(x) (x <= IMD_MODE_250K_FM)\r |
| 85 | #define IMD_MODE_MFM(x) (x >= IMD_MODE_500K_MFM)\r |
| 86 | \r |
| 87 | typedef struct {\r |
| 88 | unsigned char mode;\r |
| 89 | unsigned char nsects;\r |
| 90 | unsigned int sectsize;\r |
| 91 | unsigned int sectorOffsetMap[MAX_SPT];\r |
| 92 | unsigned char start_sector;\r |
| 93 | } TRACK_INFO;\r |
| 94 | \r |
| 95 | typedef struct {\r |
| 96 | FILE *file;\r |
| 97 | unsigned int ntracks;\r |
| 98 | unsigned char nsides;\r |
| 99 | unsigned char flags;\r |
| 100 | TRACK_INFO track[MAX_CYL][MAX_HEAD];\r |
| 101 | } DISK_INFO;\r |
| 102 | \r |
| 103 | extern DISK_INFO *diskOpen(FILE *fileref, int isVerbose); /*char *filename); */\r |
| 104 | extern unsigned int diskClose(DISK_INFO *myDisk);\r |
| 105 | extern unsigned int imdGetSides(DISK_INFO *myDisk);\r |
| 106 | extern unsigned int imdIsWriteLocked(DISK_INFO *myDisk);\r |
| 107 | \r |
| 108 | extern int sectSeek(DISK_INFO *myDisk, unsigned int Cyl, unsigned int Head);\r |
| 109 | extern int sectRead(DISK_INFO *myDisk, unsigned int Cyl, unsigned int Head, unsigned int Sector, unsigned char *buf, unsigned int buflen, unsigned int *flags, unsigned int *readlen);\r |
| 110 | extern int sectWrite(DISK_INFO *myDisk, unsigned int Cyl, unsigned int Head, unsigned int Sector, unsigned char *buf, unsigned int buflen, unsigned int *flags, unsigned int *writelen);\r |