Chained Block Moves - LSI LSI53C875A Technical Manual

2.2.17 Chained Block Moves

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Since the LSI53C875A has the capability to transfer 16-bit wide SCSI
data, a unique situation occurs when dealing with odd bytes. The
Chained Move (CHMOV) SCRIPTS instruction along with the Wide SCSI
Send (WSS) and Wide SCSI Receive (WSR) bits in the
Two (SCNTL2) register are used to facilitate these situations. The
Chained Block Move instruction is illustrated in
Functional Description
SCSI Control
Figure 2.7.