forked from open-simh/simh
-
Notifications
You must be signed in to change notification settings - Fork 1
/
sim_imd.h
135 lines (117 loc) · 6.39 KB
/
sim_imd.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*************************************************************************
* *
* 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