FDC_250KBPS
#define FDF_3_820 10,2,0xFF,0x10,82,0,FDC_250KBPS,2,0x2e,1,0,FL_MFM
#define FDF_3_800 10,2,0xFF,0x10,80,0,FDC_250KBPS,2,0x2e,1,0,FL_MFM
#define FDF_3_720 9,2,0xFF,0x20,80,0,FDC_250KBPS,2,0x50,1,0,FL_MFM
out->trans = FDC_250KBPS;
out->trans = FDC_250KBPS;
out->trans = FDC_250KBPS;
case FDC_250KBPS: speed = 250; break;