FDC_500KBPS
#define FDF_3_1722 21,2,0xFF,0x04,82,0,FDC_500KBPS,2,0x0C,2,0,FL_MFM
#define FDF_3_1476 18,2,0xFF,0x1B,82,0,FDC_500KBPS,2,0x6C,1,0,FL_MFM
#define FDF_3_1440 18,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x6C,1,0,FL_MFM
#define FDF_3_1200 15,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x54,1,0,FL_MFM
#define FDF_5_1480 18,2,0xFF,0x02,82,0,FDC_500KBPS,2,0x02,2,0,FL_MFM
#define FDF_5_1440 18,2,0xFF,0x02,80,0,FDC_500KBPS,2,0x02,2,0,FL_MFM
#define FDF_5_1230 8,3,0xFF,0x35,77,0,FDC_500KBPS,2,0x74,1,0,FL_MFM
#define FDF_5_1200 15,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x54,1,0,FL_MFM
out->trans = FDC_500KBPS;
out->trans = FDC_500KBPS;
case FDC_500KBPS: speed = 500; break;