Use of Process Synchronization Lines for Data Strobe and Acknowledge Signals
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
The scheme described in this article overcomes the problem of inappropriate status information in IEEE P896 bus systems which include cache stores, and reduces the number of handshaking lines in the data-transfer portion of the bus from six to five. The proposed IEEE P896 multimicroprocessor bus is an asynchronous bus in which addresses and data are time-multiplexed on the same set of lines. It uses a total of six lines for 'handshaking', i.e., for indicating: a)when addresses and data presented on the bus are valid, and b) when they have been accepted by the recipient. The relevant protocols are described in P. Borrill and J.