[VM][PC9801][FLOPPY] Improve drive setting via 2DD <-> 2HD.

diff --git a/source/src/vm/pc9801/floppy.cpp b/source/src/vm/pc9801/floppy.cpp
index 3181eb5..258dfa7 100644 (file)
--- a/source/src/vm/pc9801/floppy.cpp
+++ b/source/src/vm/pc9801/floppy.cpp
@@ -137,6 +137,10 @@ void FLOPPY::write_io8(uint32_t addr, uint32_t data)
                                d_fdc->set_drive_type(1, DRIVE_TYPE_2DD);
                        }
 #endif
+                       // ToDo: DMAE  (0094h/00CCh bit4)
+                       // ToDo: MOTOR (0094h/00CCh bit3)
+                       // ToDo: TMSK  (0094h/00CCh bit2)
+                       
 //#if !defined(_PC98XA) && !defined(_PC98XL)
 //                     if(modereg & 0x04) {
 //                             d_fdc->write_signal(SIG_UPD765A_MOTOR, data, 0x08);
@@ -154,12 +158,17 @@ void FLOPPY::write_io8(uint32_t addr, uint32_t data)
        case 0x00bc: // OK?
        case 0x00be:
 #if !defined(SUPPORT_HIRESO)
-               if(!(modereg & 2) && (data & 2)) {
-                       d_fdc->set_drive_type(0, DRIVE_TYPE_2HD);
-                       d_fdc->set_drive_type(1, DRIVE_TYPE_2HD);
-               } else if((modereg & 2) && !(data & 2)) {
-                       d_fdc->set_drive_type(0, DRIVE_TYPE_2DD);
-                       d_fdc->set_drive_type(1, DRIVE_TYPE_2DD);
+               if((data & 0xf8) == 0) {
+                       // ToDo: EMTON (bit2)
+                       if(!(modereg & 2) && (data & 2)) {
+                               d_fdc->set_drive_type(0, DRIVE_TYPE_2HD);
+                               d_fdc->set_drive_type(1, DRIVE_TYPE_2HD);
+                       } else if((modereg & 2) && !(data & 2)) {
+                               d_fdc->set_drive_type(0, DRIVE_TYPE_2DD);
+                               d_fdc->set_drive_type(1, DRIVE_TYPE_2DD);
+                       }
+                       // ToDo: PORT EXC (bit0)
+                       // ToDo: Three mode FDD.
                }
 #endif
                modereg = data;
@@ -240,6 +249,8 @@ uint32_t FLOPPY::read_io8(uint32_t addr)
        case 0x00bc: // OK?
        case 0x00be:
                //return 0xf8 | (modereg & 3);
+               // ToDo: DIPSW 3-2 and 3-1
+               // ToDo: Three mode FDD.
                return 0xfc | (modereg & 3);
        case 0x00cc:
        case 0x00ce: