int32_t fdi_extra_bit_cells(int drive, int side)
{
int density = 0;
int raw_size = 0;
int is_300_rpm = 0;
density = fdi_density();
is_300_rpm = (fdd_getrpm(real_drive(drive)) == 300);
switch (fdc_get_bit_rate())
{
case 0:
raw_size = is_300_rpm ? 200000 : 166666;
break;
case 1:
raw_size = is_300_rpm ? 120000 : 100000;
break;
case 2:
raw_size = is_300_rpm ? 100000 : 83333;
case 3:
case 5:
raw_size = is_300_rpm ? 400000 : 333333;
break;
default:
raw_size = is_300_rpm ? 100000 : 83333;
}
return (fdi[drive].tracklen[side][density] - raw_size);
}
static int get_bitcell_period()
{
return (disc_sector_data[disc_sector_drive][disc_sector_side][cur_sector].rate * 300) / fdd_getrpm(disc_sector_drive);
}
