[VM][PC9801][FDD] More correctness FDD I/F, refer to http://www.webtech.co.jp/company...

diff --git a/source/src/vm/pc9801/floppy.cpp b/source/src/vm/pc9801/floppy.cpp
index 8a5cb0e..c3066b7 100644 (file)
--- a/source/src/vm/pc9801/floppy.cpp
+++ b/source/src/vm/pc9801/floppy.cpp
@@ -108,9 +108,9 @@ void FLOPPY::write_io8(uint32_t addr, uint32_t data)
                                }
                                register_event(this, EVENT_TIMER, 100000, false, &timer_id);
                        }
-//                     if(modereg & 4) {
-//                             d_fdc->write_signal(SIG_UPD765A_MOTOR, data, 0x08);
-//                     }
+                       if(modereg & 4) {
+                               d_fdc->write_signal(SIG_UPD765A_MOTOR, data, 0x08);
+                       }
                        ctrlreg = data;
                }
                break;
@@ -122,6 +122,9 @@ void FLOPPY::write_io8(uint32_t addr, uint32_t data)
                        d_fdc->set_drive_type(0, DRIVE_TYPE_2DD);
                        d_fdc->set_drive_type(1, DRIVE_TYPE_2DD);
                }
+               if(((data & 4) == 0) && (((modereg & 1) != 0) || ((data & 1) != 0))) {
+                       d_fdc->write_signal(SIG_UPD765A_MOTOR, 0x01, 0x01);
+               }
                modereg = data;
                break;
 #endif
@@ -207,10 +210,12 @@ void FLOPPY::write_signal(int id, uint32_t data, uint32_t mask)
                }
                break;
        case SIG_FLOPPY_DRQ:
-               if(modereg & 1) {
-                       d_dma->write_signal(SIG_I8237_CH2, data, mask);
-               } else {
-                       d_dma->write_signal(SIG_I8237_CH3, data, mask);
+               if(ctrlreg & 0x04) {
+                       if(modereg & 1) {
+                               d_dma->write_signal(SIG_I8237_CH2, data, mask);
+                       } else {
+                               d_dma->write_signal(SIG_I8237_CH3, data, mask);
+                       }
                }
                break;
 #endif