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 void FLOPPY::reset()
  15 {
  16         for(int i = 0; i < 4; i++) {
  17                 d_fdc->set_drive_type(i, DRIVE_TYPE_2HD);
  18         }
  19 }
  20
  21 void FLOPPY::write_io8(uint32_t addr, uint32_t data)
  22 {
  23         switch(addr & 0x7fff) {
  24         case 0xdc:
  25                 // drive reg
  26                 d_fdc->write_signal(SIG_MB8877_DRIVEREG, data, 3);
  27                 d_fdc->write_signal(SIG_MB8877_MOTOR, data, 0x80);
  28                 break;
  29         case 0xdd:
  30                 // side reg
  31                 d_fdc->write_signal(SIG_MB8877_SIDEREG, data, 1);
  32                 break;
  33         case 0xde:
  34                 break;
  35         case 0xdf:
  36                 for(int i = 0; i < 4; i++) {
  37                         if(data & 1) {
  38                                 d_fdc->set_drive_type(i, DRIVE_TYPE_2HD);
  39                         } else {
  40                                 if(d_fdc->get_media_type(i) == MEDIA_TYPE_2DD) {
  41                                         d_fdc->set_drive_type(i, DRIVE_TYPE_2DD);
  42                                 } else {
  43                                         d_fdc->set_drive_type(i, DRIVE_TYPE_2D);
  44                                 }
  45                         }
  46                 }
  47                 break;
  48         }
  49 }
  50