SR3E
viafb_write_reg(SR3E, VIASR, sr3e);
RegSR3E = viafb_read_reg(VIASR, SR3E);
viafb_write_reg(SR3E, VIASR, RegSR3E & (~0x20));
viafb_write_reg(SR3E, VIASR, RegSR3E);
sr3e = viafb_read_reg(VIASR, SR3E);
viafb_write_reg_mask(SR3E, VIASR, 0x0, BIT5);