/[cebix]/cwcbm/common.h
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revision 1.1 by cebix, Wed Jan 7 15:37:45 2004 UTC revision 1.2 by cebix, Wed Jan 7 16:53:58 2004 UTC
# Line 1  Line 1 
1  /*  /*
2   *  common.h - Common parts of readcbm and writecbm   *  common.h - Common parts of readcbm and writecbm
3   *   *
4   *  Written in 2003 by Christian Bauer <Christian.Bauer@uni-mainz.de>   *  Written in 2003-2004 by Christian Bauer <Christian.Bauer@uni-mainz.de>
5   */   */
6    
7  #ifndef COMMON_H  #ifndef COMMON_H
8  #define COMMON_H  #define COMMON_H
9    
10    #include <stdio.h>
11    #include <stdlib.h>
12    #include <string.h>
13    #include <time.h>
14    #include <unistd.h>
15    #include <getopt.h>
16    #include <errno.h>
17    #include <sys/io.h>
18    
19    
20  /* Number of tracks (tracks are numbered 1..NUM_TRACKS) */  /* Number of tracks (tracks are numbered 1..NUM_TRACKS) */
21  #define NUM_TRACKS 35  #define NUM_TRACKS 35
22    
# Line 16  Line 26 
26  /* Bytes per sector */  /* Bytes per sector */
27  #define SECTOR_SIZE 256  #define SECTOR_SIZE 256
28    
 /* 1541 crystal frequency (16 MHz) */  
 #define CRYSTAL_FREQ 16000000  
   
 /* 1541 RPM */  
 #define NOMINAL_RPM 300  
   
 /* Catweasel frequency (7 MHz) */  
 #define CW_FREQ 7080500.0  
29    
30  /* Bit rate for each speed zone */  /* Bit rate for each speed zone */
31  const int bps[4] = {  extern const int bps[4];
         CRYSTAL_FREQ / 16 / 4, CRYSTAL_FREQ / 15 / 4,  
         CRYSTAL_FREQ / 14 / 4, CRYSTAL_FREQ / 13 / 4  
 };  
32    
33  /* Standard speeds for tracks */  /* Standard speeds for tracks */
34  const int std_speed[NUM_TRACKS + 1] = {  extern const int std_speed[NUM_TRACKS + 1];
         0,  
         3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,  
         2, 2, 2, 2, 2, 2, 2,  
         1, 1, 1, 1, 1, 1,  
         0, 0, 0, 0, 0  
 };  
35    
36  /* Number of sectors per track, for all tracks */  /* Number of sectors per track, for all tracks */
37  const int num_sectors[NUM_TRACKS + 1] = {  extern const int num_sectors[NUM_TRACKS + 1];
38          0,  
39          21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,  
40          19,19,19,19,19,19,19,  /* Drive number */
41          18,18,18,18,18,18,  extern int drive_num;
42          17,17,17,17,17  
43  };  /* Actual RPM of the drive, and whether it's 40 or 80 tracks */
44    extern int drive_rpm;
45  /* Actual RPM of the drive, and double step flag */  extern int drive_40tracks;
46  static int drive_rpm = 300;  
47  static int double_step = 0;  /* Name of file to read from/write to */
48    extern const char *file_name;
49    
50    
51    /* Catweasel controller struct */
52    extern catweasel_contr c;
53    
54    
55  /* Clock table (nominal number of Catweasel clocks per inter-flux-change gap) */  /* Clock table (nominal number of Catweasel clocks per inter-flux-change gap) */
56  static int clock_table[4] = {0, 0, 0, 0};  extern int clock_table[4];
57    
58  /* Threshold table */  /* Threshold table */
59  static int thresh_table[3] = {0, 0, 0};  extern int thresh_table[3];
60    
 /* Track buffer */  
 static unsigned char track_buf[MAX_SECTORS * SECTOR_SIZE];  
61    
62  /* Catweasel controller struct */  /* Track buffer */
63  catweasel_contr c;  extern unsigned char track_buf[MAX_SECTORS * SECTOR_SIZE];
64    
65    
66  /* Delay specified number of milliseconds */  /* Delay specified number of milliseconds */
67  static void msdelay(int ms)  extern void msdelay(int ms);
68  {  
69          usleep(ms * 1000);  /* Seek to given CBM track (1..35) and select correct side and speed zone */
70  }  extern void seek_to(int drive, int track);
71    
72    /*
73  /* Set speed zone and tables */   * Parse command line arguments and set
74  static void set_zone(int track)   *  c.iobase
75  {   *  c.type
76          int zone = std_speed[track];   *  drive_num
77          clock_table[0] = 0;   *  drive_rpm
78          clock_table[1] = CW_FREQ * NOMINAL_RPM * 1 / (bps[zone] * drive_rpm);   *  drive_40tracks
79          clock_table[2] = CW_FREQ * NOMINAL_RPM * 2 / (bps[zone] * drive_rpm);   *  file_name
80          clock_table[3] = CW_FREQ * NOMINAL_RPM * 3 / (bps[zone] * drive_rpm);   * Also initializes the catweasel_contr struct
81          thresh_table[0] = (clock_table[0] + clock_table[1]) / 2;   */
82          thresh_table[1] = (clock_table[1] + clock_table[2]) / 2;  extern void parse_args(int argc, char **argv);
83          thresh_table[2] = (clock_table[2] + clock_table[3]) / 2;  
84  }  /* Obtain access to I/O ports */
85    extern void ioport_access(void);
86    
87    /* Start drive */
88    extern void start_drive(int drive);
89    
90    /* Stop drive */
91    extern void stop_drive(int drive);
92    
93  #endif  #endif
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