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Unisys Corp
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Unisys Corp
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Priority claimed from PCT/US1983/000898external-prioritypatent/WO1983004440A1/en
Publication of JPS59501043ApublicationCriticalpatent/JPS59501043A/ja
Publication of JPH022341B2publicationCriticalpatent/JPH022341B2/ja
System for selecting between internal and external DMA request where ASP generates internal request is determined by at least one bit position within configuration register
Data processing apparatus having a bidirectional interface with receiving buffers, three-state buffers, and enable terminals for automatically switching the direction of data transmission and reception