Computer system including a write protection circuit for prevent

Details Computer system including a write protection circuit for prevent Computer system including a write protection circuit for prevent

1990-09-28

1994-06-28

Gossage, Glenn

Boots, shoes, and leggings

364DIG1, 365195, 395575, 395725, G06F 1200, G06F 1216, G06F 1300

Patent

active

053254996

ABSTRACT:
A computer system including a write protection circuit and a write poster is disclosed. The write protection circuit provides page description information to the computer system for controlling various operations. Illegal write operations as defined by the page description information are prevented from reaching a system bus and external cache. Internal cache invalidate operations may also be performed transparently to system operation. The write poster accepts write operations in zero wait states and assembles them into fewer more efficient writes to memory. A unique method and apparatus for programming a descriptor random access memory (RAM) is also provided.

REFERENCES:
patent: 5045998 (1991-09-01), Begun et al.
patent: 5091850 (1992-02-01), Culley
patent: 5157774 (1992-10-01), Culley
"LR3220 Read-Write Buffer Preliminary," LSI Logic Corporation, Oct. 1989, pp. 1-24.
"Will the search for the ideal memory architecture ever end?", by Ron Wilson, Senior Editor, Computer Design, Jul. 1, 1990, pp. 78-90.
"New Cache Tags Bring Flexibility, Performance to Memory Subsystems," by Warren Andrews, Senior Editor, Computer Design, pp. 42, 44, 46, Jul. 1, 1990.
"ALR Revs Up MCA," by Bill Catchings and Mark L. Van Name, BYTE, Sep. 1989, pp. 165-169.
"New Products" (Systems), Computerworld, Nov. 20, 1989, p. 62.
"ALR rolls out 486-based `PowerCache 33/4`," by Brian Gillooly, Computer Reseller News, Feb. 5, 1990, pp. 9-10.
"ALR's Memory Caching Puts Its 486 on Top," by Michael J. Miller, Infoworld, Jul. 24, 1989, pp. 1 and 97.
"ALR Readies Its PowerCache 4 as an Original 486 System," By David Strom, PC Week, Jul. 24, 1989, p. 5.
"Cashing in on the Micro Channel," by Winn L. Rosch, PC Magazine, Oct. 30, 1990, pp. 101-102, 105-106, 110, 112.
"33 MHz 386 PCs Arrive As Chip Is Launched. (Product announcement)," PC User, Apr. 26, 1989, pp. 25-26.

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