DATA_IN
value = (bit & EEPROM_READ_CMD) ? DATA_IN : 0;
value = (bit & raddr) ? DATA_IN : 0;
READ_OP | SEL_ROM | SEL_CHIP | DATA_IN);
READ_OP | SEL_ROM | SEL_CHIP | DATA_IN | SEL_CLK);
READ_OP | SEL_ROM | SEL_CHIP | DATA_IN);
READ_OP | SEL_ROM | SEL_CHIP | DATA_IN | SEL_CLK);
READ_OP | SEL_ROM | SEL_CHIP | DATA_IN);
bit = (rom_addr & j) ? DATA_IN : 0;