Emulation device for converting magnetic disc memory mode signal from computer into semiconductor memory access mode signal for semiconductor memory
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United States of America Patent
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-
Jan 23, 1990
Grant Date -
N/A
app pub date -
Feb 22, 1985
filing date -
Feb 24, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A semiconductor backing storage device is connected to a computer system accessible only in magnetic disc access mode for improvement in access time. In transferring information data between the computers and the semiconductor backing storage device, access control command signals peculiar to magnetic disc access mode are all disregarded and address data peculiar to magnetic disc access mode are converted into those necessary for semiconductor memory mode in writing or reading information data. To further decrease access time, one-word buffers are provided for a semiconductor backing storage controller and the backing storage device, so that the preceding data are transferred from the buffers while the current data are transferred to the buffers after necessary processing. The semiconductor backing storage memory is also usable for a multicomputer system by providing cross-call function for the semiconductor backing storage controller.
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