In the paper，two schemes for attaching A/D's 、D/A's to real-time simulation-oriented computer systems are discussed first. Then a number of searching algorithms are analysed，and a new searching method--mapping search is presented. In it are also discussed the characteristics of computing tasks in continuous system simulations and the exploitation of parallelism of these ones. After analysing the defaults of the architecture of AD-10,this paper points out that pure heterogeneous multiprocessor systems have many constraints on the exploitation of paral1elism of computing tasks in continuous system simulations. Better architecture should be based on homogeneous multiprocessor.