High performance peripheral interface with read-ahead capability

Details High performance peripheral interface with read-ahead capability High performance peripheral interface with read-ahead capability

1995-10-30

1996-12-10

Shin, Christopher B.

Boots, shoes, and leggings

395840, 395841, 395872, 36423951, 364DIG1, G06F 300

Patent

active

055840400

ABSTRACT:
A high performance Local Bus Peripheral Interface (LBPI) for a computer local bus and its high performance peripheral interface(s) uses a pipelined architecture to increase the use of the available data transfer bandwidth. The LBPI is coupled between the computer local bus and the peripheral interface(s) and has a pipelined architecture which includes a Read Ahead Buffer, a Read Ahead Counter, a Data Out Latch, and a Controlling State Machine with a Configuration Register. The LPBI maintains a countdown of the number of words of a data sector already transferred and/or "snoops" the peripheral device commands from the computer to intelligently predict the occurrence of subsequent read data transfers commands. The Controlling State Machine also "snoops" the peripheral device commands to maintain its record of the operating parameters of the peripheral devices and also keeps track of which of the devices is currently active.

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