Personal computer with interface controller
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United States of America Patent
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Mar 8, 1994
Grant Date -
N/A
app pub date -
Apr 6, 1992
filing date -
Apr 6, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to personal computers and, more particularly, to a personal computer having an interface controller providing an economical way to achieve access to a direct access storage device by a small computer system interface. In accordance with this invention, the system CPU is selectively allowed to access all or only a portion of the internal registers in an interface controller, enabling implementation in conjunction with a conventional subsystem microprocessor interface to the registers if desired. With this change, either interface has full access to the interface controller's internal registers. By allowing such access, the number of component parts required can be reduced where multitasking possibilities are not desired, and the cost of providing SCSI capability significantly reduced.
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