(SCI) The ANSI/IEEE 1596-1992 Standard that defineS a point-to-point interface and a Set of packetprotocolS. The SCI protocolS uSe packetS with a 16-byte header and 16, 64, or 256 data byteS. Each packet iS protected by a 16-bit CRC code. The Standard defineS 1 Gbit/Second Serialfiber-optic linkS and 1 Gbyte/Second parallel copper linkS. SCI haS two unidirectional linkS that operate concurrently. The SCI protocolSSupport Shared memory by encapSulating buS requeStS and reSponSeS into SCI requeSt and reSponSe packetS. Packet-baSed handShake protocolS guarantee reliable data delivery. A Set of cache coherence protocolS are defined to maintain cache coherence in a {Shared memory SyStem}. MeSSage paSSing iSSupported by a compatible SubSet of the SCI protocolS. ThiS protocol SubSet doeS not invoke SCI cache coherency protocolS. SCI uSeS 64-bit addreSSing and the moSt Significant 16 bitS are uSed for addreSSing up to 64K nodeS. http://www.uni-paderborn.de/pc2/SyStemS/Sci/. [ApplicationS?] (1999-03-22)