R_BL
regs.R_BL = subfunction;
regs.R_BL = 0x10;
regs.R_BL = 1;
regs.R_BL = 1;
regs.R_BL = 1;
regs.R_BL = 1;
regs.R_BL = 1;
regs.R_BL = 1;
regs.R_BL = 0x80;