WR_DFTHRSH_90    3139 dev/microcode/aic7xxx/aic79xx_reg.h #define		WR_DFTHRSH_90   	0x60
WR_DFTHRSH_90    1726 dev/microcode/aic7xxx/aic7xxx_reg.h #define		WR_DFTHRSH_90   	0x60