WR_DFTHRSH_50    3143 dev/microcode/aic7xxx/aic79xx_reg.h #define		WR_DFTHRSH_50   	0x20
WR_DFTHRSH_50    1730 dev/microcode/aic7xxx/aic7xxx_reg.h #define		WR_DFTHRSH_50   	0x20