Network interface card for reading dynamically changing data

Details Network interface card for reading dynamically changing data Network interface card for reading dynamically changing data

1995-05-24

1997-10-07

Swann, Tod R.

Boots, shoes, and leggings

364DIG1, 395486, 395494, G06F 1300, G06F 1336, G06F 1342

Patent

active

056757662

ABSTRACT:
A mechanism is provided that allows partial reading of storage locations, such as statistics counters, by providing a temporary read data storage latch on a peripheral device. The latches are updated with fresh data from an address storage location whenever any one of the following conditions is met:
1. The address accessed by the host differs from the previous access;
2. The host has written to the device prior to the current read; or
3. When accessing the same location sequentially, one or more bytes of the second read have already been read by the host in a previous read.
These rules allowed for byte- or word-wise write/read/verify cycles; byte- or word-wise reads of dynamic data; and byte, word, or double-word with polling of registers. With this mechanism, it is impossible for the host to erroneously end up with 01ff (hex) as it reads a four byte register a byte at a time when the register increments from 00ff to 0100 between the sequential reads.

REFERENCES:
patent: 4388687 (1983-06-01), Tuibell et al.
patent: 4599708 (1986-07-01), Schuster
patent: 4630196 (1986-12-01), Bednar, Jr. et al.
patent: 4648065 (1987-03-01), Zenk et al.
patent: 4692859 (1987-09-01), Ott
patent: 4814971 (1989-03-01), Thatte
patent: 4835672 (1989-05-01), Zenk et al.
patent: 4888773 (1989-12-01), Arlington et al.
patent: 5003463 (1991-03-01), Coyle et al.
patent: 5043935 (1991-08-01), Taniai et al.
patent: 5134699 (1992-07-01), Aria et al.
patent: 5247644 (1993-09-01), Johnson et al.
patent: 5263139 (1993-11-01), Testa et al.
patent: 5291582 (1994-03-01), Drako et al.
patent: 5371870 (1994-12-01), Goodwin et al.
patent: 5392406 (1995-02-01), Petersen et al.
patent: 5473761 (1995-12-01), Parks et al.

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