| 摘要 |
A method for communicating on a SCSI bus permits out-of-band addressing and communication for normally non-addressable devices such as SCSI expanders and terminators. The method remaps 18 SCSI data lines for out-of-band operation and manipulates no more than those data lines. Some of the data lines are remapped for purposes of out-of-band signaling and data transfers. Advantageously, manipulation of only the SCSI data lines prevents the possible response of a device on the SCSI network that does not support the out-of-band operations. Accordingly, the disclosed method is backward compatible with existing SCSI networks while allowing implementation of devices having the increased functionality of out-of-band communication.
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