SCSI Commands: 33BRECEIVE DIAGNOSTIC RESULTS Page 150ByteBits7 6 5 4 3 2 1 06 Diagnostic Parameter7 Diagnostic Parameter (LSB)3.21.2.2 Field Descriptions – PCV not setField Bytes DescriptionPageCode0 Identifies the type of diagnostic page being returned.Reserved 1 All reserved bits must be 0.PageLength2-3 Indicates the number of bytes of data to be returned after this block.DiagnosticParameter4-7 The results of the SEND DIAGNOSTIC command test. A code of zero indicatesthat the drive passed the test. A non-zero code indicates that the drive hasfailed the test. The value returned corresponds to the Message Code describedin Appendix A.3.21.3 RECEIVE DIAGNOSTIC RESULTS Returned data if PCV set, Page Code = 00hWhen the Supported Diagnostic Page is requested. The following diagnostic pagewill be returned.ByteBits7 6 5 4 3 2 1 00 Supported Diagnostic Page Code - 00h1 Reserved – 00h2 (MSB)3 Page Length (03h) (LSB)4 Supported Diagnostic Page Code - 00h5 Ring Buffer Memory Test Diagnostic Page Code – 80h6 Parallel Protocol Parameters Diagnostic Page Code – 81h (parallel SCSI drives only)3.21.4 Returned data if PCV set, Page Code = 81hWhen the Parallel Protocol Parameters Diagnostic Page is requested. The followingdiagnostic page will be returned. (Parallel SCSI drives only.)ByteBits7 6 5 4 3 2 1 00 Parallel Protocol Parameters Diagnostic Page Code – 81h1 Reserved – 00h2 (MSB)3 Page Length (04h) (LSB)4 Transfer Period Factor5 Reserved6 Req/Ack Offset7 Transfer Width Exponent8 PCOMP_EN RTI RD_STRM WR_FLOW HOLD_MCS QAS_REQ DT_REQ IU_REQ
