6. Update Channel path IDs to B8  (channel path ID B8 is the CHPID that we defined in the previous example) to define the Processor / CU connection (see Figure 13-24). Press Enter. 

*---------------------- Change Control Unit Definition -----------------------* | | | | | Specify or revise the following values. | | | | Control unit number . : 1B80 Type . . . . . . : OSA | | Processor ID . . . . . : MUSCA Musca | | Channel Subsystem ID . : 1 | | | | Channel path IDs . . . . B8 __ __ __ __ __ __ __ + | | Link address . . . . . . ____ ____ ____ ____ ____ ____ ____ ____ + | | | | Unit address . . . . . . 00 __ __ __ __ __ __ __ + | | Number of units . . . . 255 ___ ___ ___ ___ ___ ___ ___ | | | | Logical address . . . . __ + (same as CUADD) | | | | Protocol . . . . . . . . __ + (D, S or S4) | | I/O concurrency level . _ + (1, 2 or 3) | | | | | | | *-----------------------------------------------------------------------------* 

7. HCD now shows the Modify Device Parameters panel where you can override the Unit Address (UA) numbers. For most OSA definitions, the Unit address starts at 00 . 

