bcinfo
DEBUG("bc unit %d is BIOS device 0x%x", i, bcinfo[i].bc_unit);
if (bcinfo[i].bc_unit == biosdev)
return(bcinfo[unit].bc_unit);
bcinfo[nbcinfo].bc_unit = biosdev;
v86.ds = VTOPSEG(&bcinfo[nbcinfo].bc_sp);
v86.esi = VTOPOFF(&bcinfo[nbcinfo].bc_sp);
bcinfo[i].bc_sp.sp_devicespec);
} bcinfo [MAXBCDEV];