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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 |