IBM iSeries 270 Service Manual page 257

The following table provides information necessary to identify the IOP to which IOAs are assigned.
v The left column indicates the domain in which IOA assignment is allowed.
v The right column is used to determine the IOP to which an IOA is assigned.
v The first position in the list must be an IOP. The remaining positions may be IOPs or IOAs. IOAs are
assigned to the first IOP located to their left in the list. Although IOAs can be manually reassigned using
SST/DST, the IOA assignments return to the default order after each IPL.
Table 4. Identify the IOP to which IOAs are assigned
Multi-adapter bridge domain / PCI bridge set
MB1, C01 - C07
The following table gives the components available for callout on the Models 800 and 810 (except
processor features 7428, 7430). It matches those components with the field replaceable unit (FRU)
containing the component. There is also location and CCIN information, and if available, links to remove
and replace procedures and additional comments.
Table 5. Models 800 and 810 FRU locations (except processor features 7428, 7430)
IOA assignment rules
MB1, C07, C01, C06, C05, C04, C03, C02
Analyze hardware problems
245