| 摘要 |
<p>Method of selecting a desired address in a plurality of input/output boards (2 to 4) connected to common buses (6). In the method, the need to effect addressing for the input/output boards (2 to 4) is eliminated, and maintenance of the input/output boards (2 to 4) is facilitated. For this purpose, a programmable address converter circuit (5) is provided which generates slot selection signals (s1 to s16) and an in-board address (BA) from an address for accessing the input/output boards (2 to 4) which is output from a microprocessor (CPU) on a CPU board (1). One of the plurality of input/output boards (2 to 4) is selected by the slot selection signals (s1 to s16) from the address converter circuit (5), and one of the addresses in the selected input/output board is selected by the in-board address (BA).</p> |
