source/src/vm/mz2800/floppy.cpp

   1 /*
   2         SHARP MZ-2800 Emulator 'EmuZ-2800'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2007.08.13 -
   6
   7         [ floppy ]
   8 */
   9
  10 #include "floppy.h"
  11 #include "../mb8877.h"
  12 #include "../disk.h"
  13
  14 namespace MZ2800 {
  15
  16 void FLOPPY::reset()
  17 {
  18         for(int i = 0; i < 4; i++) {
  19                 d_fdc->set_drive_type(i, DRIVE_TYPE_2HD);
  20         }
  21 }
  22
  23 void FLOPPY::write_io8(uint32_t addr, uint32_t data)
  24 {
  25         switch(addr & 0x7fff) {
  26         case 0xdc:
  27                 // drive reg
  28                 d_fdc->write_signal(SIG_MB8877_DRIVEREG, data, 3);
  29                 d_fdc->write_signal(SIG_MB8877_MOTOR, data, 0x80);
  30                 break;
  31         case 0xdd:
  32                 // side reg
  33                 d_fdc->write_signal(SIG_MB8877_SIDEREG, data, 1);
  34                 break;
  35         case 0xde:
  36                 break;
  37         case 0xdf:
  38                 for(int i = 0; i < 4; i++) {
  39                         if(data & 1) {
  40                                 d_fdc->set_drive_type(i, DRIVE_TYPE_2HD);
  41                         } else {
  42                                 if(d_fdc->get_media_type(i) == MEDIA_TYPE_2DD) {
  43                                         d_fdc->set_drive_type(i, DRIVE_TYPE_2DD);
  44                                 } else {
  45                                         d_fdc->set_drive_type(i, DRIVE_TYPE_2D);
  46                                 }
  47                         }
  48                 }
  49                 break;
  50         }
  51 }
  52
  53 }