| 摘要 |
PROBLEM TO BE SOLVED: To easily detect the error state of an address by extremely simple constitution on the side of software by detecting the non-alignment of the address so as to forcedly execute aligning and so as to execute prescribed interruption processing operation at the same time. SOLUTION: Various kinds of external devices such as ROM 14, RAM 15 or an I/O device are parallelly connected through various kinds of bus lines such as an address bus 16, a data bus 17 constituted to be the width of 32-bit with a microprocessor 13 in the center of control. When an address specified within a program to use does not meet a previously set condition, the microprocessor 13 forcedly changes the address so as to meet the condition and after then executes prescribed access operation such as the read/write of data from a memory to the changed memory. |
