/[gxemul]/trunk/src/devices/dev_fdc.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /trunk/src/devices/dev_fdc.c

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revision 4 by dpavlin, Mon Oct 8 16:18:00 2007 UTC revision 18 by dpavlin, Mon Oct 8 16:19:11 2007 UTC
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *     *  
27   *   *
28   *  $Id: dev_fdc.c,v 1.9 2005/02/24 15:38:34 debug Exp $   *  $Id: dev_fdc.c,v 1.13 2005/10/26 14:37:03 debug Exp $
29   *     *  
30   *  Floppy controller.   *  PC-style floppy controller.
31   *   *
32   *  TODO!  (This is just a dummy skeleton right now.)   *  TODO!  (This is just a dummy skeleton right now.)
33     *
34     *  TODO 2: Make it work nicely with both ARC and PC emulation.
35     *
36     *  See http://members.tripod.com/~oldboard/assembly/765.html for a
37     *  quick overview.
38   */   */
39    
40  #include <stdio.h>  #include <stdio.h>
41  #include <stdlib.h>  #include <stdlib.h>
42  #include <string.h>  #include <string.h>
43    
 #include "console.h"  
44  #include "device.h"  #include "device.h"
45  #include "machine.h"  #include "machine.h"
46  #include "memory.h"  #include "memory.h"
47  #include "misc.h"  #include "misc.h"
48    
49    
50  #define DEV_FDC_LENGTH          0x100  #define DEV_FDC_LENGTH          8
51    
52    
53  struct fdc_data {  struct fdc_data {
# Line 63  int dev_fdc_access(struct cpu *cpu, stru Line 67  int dev_fdc_access(struct cpu *cpu, stru
67          int i;          int i;
68          struct fdc_data *d = extra;          struct fdc_data *d = extra;
69    
70          idata = memory_readmax64(cpu, data, len);          if (writeflag == MEM_WRITE)
71                    idata = memory_readmax64(cpu, data, len);
         /*  TODO:  this is 100% dummy  */  
72    
73          switch (relative_addr) {          switch (relative_addr) {
74          case 0x04:          case 0x04:
                 /*  no debug warning  */  
                 if (writeflag==MEM_READ) {  
                         odata = d->reg[relative_addr];  
                 } else  
                         d->reg[relative_addr] = idata;  
75                  break;                  break;
76          default:          default:if (writeflag==MEM_READ) {
77                  if (writeflag==MEM_READ) {                          fatal("[ fdc: read from reg %i ]\n",
                         debug("[ fdc: read from reg %i ]\n",  
78                              (int)relative_addr);                              (int)relative_addr);
79                          odata = d->reg[relative_addr];                          odata = d->reg[relative_addr];
80                  } else {                  } else {
81                          debug("[ fdc: write to reg %i:", (int)relative_addr);                          fatal("[ fdc: write to reg %i:", (int)relative_addr);
82                          for (i=0; i<len; i++)                          for (i=0; i<len; i++)
83                                  debug(" %02x", data[i]);                                  fatal(" %02x", data[i]);
84                          debug(" ]\n");                          fatal(" ]\n");
85                          d->reg[relative_addr] = idata;                          d->reg[relative_addr] = idata;
86                  }                  }
87          }          }
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