| 摘要 |
Data processing system including a main processor (11) and a co-processor (22) sharing the same I/O facilities (17,18,19) as the main processor (11) and running software unknown to the main processor (11). The main processor (11) can concurrently run other software and maintains priority over shared I/O facilities (17,18,19) by providing trapping logic incorporated in a random access memory and dynamically loadable by the main processor (11) which contains data related to the current useability by the co-processor (22) of a shared I/O device (17). Additional logic is associated with the co-processor (22) to manage interrupts between the co-processor (22) and the system bus (16). |
