Title (en)

BUS COUPLER BETWEEN A SYSTEM BUS AND A LOCAL BUS IN A MULTIPLE PROCESSOR DATA PROCESSING SYSTEM

Title (de)

BUSKOPPLER ZWISCHEN EINEM SYSTEMBUS UND EINEM LOKALEN BUS IN EINEM MEHRPROZESSOR-DATENVERARBEITUNGSSYSTEM

Title (fr)

BUS DE COUPLAGE ENTRE UN BUS DE SYSTEME ET UN BUS LOCAL DANS UN SYSTEME DE TRAITEMENT DE DONNEES A PROCESSEURS MULTIPLES

Publication

EP 0978048 A1 20000209 (DE)

Application

EP 97926974 A 19970604

Priority

• DE 9701119 W 19970604
• DE 19623668 A 19960613

Abstract (en)

[origin: DE19623668C1] The arrangement includes a bus coupler (15a, 15c) which joins a system bus (10), having at least one local bus (14a, 14c), to the processors (16a.. d), having buffer memories, which contain buffer lines (17a..d ). The bus coupler includes arrangements, which copy the coherence protocol of the system bus (10) onto the local bus (14a, 14c). The arrangements contain at least one intervention register (21) and at least one write register (22) for buffer lines, which are respectively connected with the local bus (16a.. d) for reading and with the system bus (10) for writing. The write register is also connected with the local bus in such way, that the content of the write register is transferable into the intervention register (21), during one, the content the write register, concerning intervention.

IPC 1-7

G06F 13/40; G06F 12/08

IPC 8 full level

G06F 12/08 (2006.01); G06F 12/0815 (2016.01); G06F 13/36 (2006.01); G06F 13/38 (2006.01); G06F 15/17 (2006.01); G06F 15/177 (2006.01)

CPC (source: EP US)

G06F 12/0815 (2013.01 - EP US); G06F 15/17 (2013.01 - EP US)

Citation (search report)

See references of WO 9748055A1

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

DE 19623668 C1 19971016; EP 0978048 A1 20000209; JP 2000512407 A 20000919; US 6295477 B1 20010925; WO 9748055 A1 19971218

DOCDB simple family (application)

DE 19623668 A 19960613; DE 9701119 W 19970604; EP 97926974 A 19970604; JP 50104598 A 19970604; US 20244398 A 19981214