Data processing apparatus with message acceptance monitoring

Details Data processing apparatus with message acceptance monitoring Data processing apparatus with message acceptance monitoring

1985-08-29

1987-09-29

Fleming, Michael R.

Excavating

371 22, 371 11, G06F 1110

Patent

active

046972684

ABSTRACT:
Data processing apparatus includes a number of units connected by a bus over which each unit can send public write messages to all the other units in parallel. The units are connected in a loop by means of public write acceptance lines. Whenever a unit receives a public write message it sends an acceptance signal to the next unit in the loop. Each unit produces an error signal if it receives a public write message but does ot receive any corresponding acceptance signal, or if it receives an acceptance signal without having received a corresponding public write message. Thus, each unit checks its neighbors in the loop to ensure correct reception of the messages.

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patent: 4511958 (1985-04-01), Funk
patent: 4539652 (1985-09-01), Robin
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