| 摘要 |
PURPOSE:To judge the package of a user table ROM by instructing this address of the user table ROM, and reading set data corresponding to the address. CONSTITUTION:A package judging processing for a table ROM 3 classified by user is performed by setting an I/O address in OUTPUT, and by performing data input to the table ROM 3 classified by user in INPUT by data inputted/ outputted in an I/O device image from a CPU 1 by a ROM device processing part 2. Also, bus control at the time of opening an I/O address bus 9 is performed by a pull-up resistor 4. Then, information required for the judgement of the package of the table ROM 3 classified by user is delivered to a software side(CPU program processing). In such a way, it is possible to easily read the user table and to simplify the judgement for the package of the user ROM 3 based on the content of the table. |
