FIELD: data transmission in computer system. SUBSTANCE: bridge circuit of buses has outgoing and incoming request queues. Requests initiated across first bus and addressed to destination station at second bus are allocated to outgoing queue. Requests initiated across second bus and addressed to destination station at first bus are allocated to incoming queue. During transactions residing in bridge circuit conflict situation solution unit maintains sequencing of transactions and eliminates deadlocks. It governs allocation of requests in incoming queue, responses to requests initiated across first bus, and execution of requests in incoming queue at second bus. This unit functions to find out whether logging in incoming queue is enabled, whether there are transactions logged therein, and whether there is right of second bus lockout. EFFECT: provision for preventing deadlocks in bridge circuit of buses. 26 cl, 11 dwg
