Universal device for coupling a computer bus to a controller of

Details Universal device for coupling a computer bus to a controller of Universal device for coupling a computer bus to a controller of

1992-07-15

1994-11-22

MacDonald, Allen R.

Boots, shoes, and leggings

395275, 364239, 3642423, 3642393, 364DIG1, 364939, 3649392, 36494061, 364DIG2, G06F 1300

Patent

active

053676467

ABSTRACT:
An universal device (GPUI) for coupling a computer bus (PSB) to a controller (DEA) of a group of peripherals connected to one another by a specific link (FDDI) to which the controller is physically connected, includes a microprocessor (CPU) associated with a set of memories and an interface (IHAC, IHAD) for linkage with the controller (DEA) assuring the transfer of the data of the frames and of control blocks. The universal coupling device comprises a double-port random-access buffer memory (VRAM) connected by way of a first bus (B.sub.1) to the interface (IHAD) and by way of a second bus (B.sub.2) to the computer bus via a specific interface of the computer (MPC). Transfer of the data between the linking interface (IHAC, IHAD) and the double-port memory, on the one hand, and between the latter (VRAM) and the computer bus (PSB) on the other, is organized by a microprocessor (CPU), as is the conversion of control blocks used on the computer bus into those used in the link.

REFERENCES:
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patent: 4837677 (1989-06-01), Barrus, Jr. et al.
patent: 4965796 (1990-10-01), Petty
patent: 4996690 (1991-02-01), George et al.
patent: 5136584 (1992-08-01), Hedlund
Computer Communication Review, vol. 18, No. 4, Aug. 1988 pp. 175-187, Kanakia & Cheriton.
Euromicro 88 Symposium on Microprocessing and Microprogramming, vol. 24, No. 1-5, Aug. 29, 1988, pp. 503-509.
Computer Technology Review, vol. 10, No. 14, Nov. 1990, pp. 37-39, Hsu & Greefield.

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