backplane card in support of the multi-host configuration. The following figure
shows the functionality of the internal SCSi assembly.

C.1.11.5 SCSI ID Selection

The main logic board host adapter is assigned the SCSI identification of 7for both
ports. The two internal drives attached to the SCA-2 connectors have a SCSI
identification of 0 and 1, while the CD-ROM has an identification of 6.
C.1.12 ASICs
The system unit achieves a high level of integration through application-specific
intergrated circuits (ASICs). All ASICs are 1149.1 (JTAG) compliant. The following
ASICs are highlighted andare described in the following subsections:
XB9+
QSC
Functional Description 271