| 摘要 |
PURPOSE:To reduce processing time in an exclusive bus system and to make both sides of software/hardware of data replacement in the common memory of bus coupling system, easy by microprogramming with a multi-operation code. CONSTITUTION:A control sustem for CPUs 1 and 2 is microprogrammed with a common operation code coupled with common buses 18 and 21, and when the common operation code is executed, a common bus control signal CRBRQ is transmitted and a series of bus control is made in response to a response input signal CRBAK. When a multi-operation code is executed, an EQ' is transmitted and when an EI is inputted, a multi-use interruption is generated, and calls such as program pointer and status and save of each register interruption are made from a specified area of an exclusive memory 8. The multi-use interruption can be masked with the software and the interruption can be ignored. When processor units 1 and 2 are in operation, the processing is made independently and in parallel to achieve the maximum processing speed. |
