R_EB12
regs[R_EB12] = 0x0f;
regs[R_EB12] = 0x33;
tda_reg("EXTENDED_BYTE_12 = 0x%02x\n", 0xff & regs[R_EB12]);
regs[R_EB12] &= ~0x20;
ret = tda18271_write_regs(fe, R_EB12, 1);