| 摘要 |
PURPOSE:To surely prevent the mistaken setting of the presence or absence of an I/O card by constituting a system in such a way that information on whether the I/O card is present or not can be automatically set and decided without an operator at the time of entering a power source. CONSTITUTION:When a power source is entered in a computer 6, I/O cards 4-1-4-n output a pice of presence or absence information 7-1-7-n in directions shown by arrows using dotted lines. A controller 3 initializes a parameter so that the maximum number of the loaded I/O cards 4-1-4-n can be looped, and decides whether the looping is precisely made or not. If not, the controller 3 inputs the presence or absence information 7-1 that the I/O card 4-1 outputs to a CPU 1. If the input of said information 7-1 is decided to be present, the controller 3 decides and reports that the I/O card 4-1 corresponding to said information 7-1 is present to a main memory device 2. |
