Controller for data processing system
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United States of America Patent
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-
Jan 13, 1981
Issued Date -
N/A
app pub date -
Sep 14, 1979
filing date -
Sep 14, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A controller for at least one secondary storage device for use in a data processing system having a system bus which accommodates a device or a CPU that first acquires control, a device bus that has the same address, data and control format as the system bus and a cache bus which maintains its own timing for address and data signals. The controller has means for transferring the control signals between the device bus and the system bus to establish control over the system bus by the secondary storage device. The data, address and control signals are transferred between the device bus and the cache bus in accordance with the cache bus timing.
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