Service manual

4-10 Sun Ultra 2 Series Service Manual • July 1996
Each group listed in the preceeding tables (Group 0, Group 1, Group 2, and Group 3,
respectively) allow enough address space to accommodate four 16-Mbyte,
four 32-Mbyte, four 64-Mbyte, or four 128-Mbyte DSIMMs. Unused addresses are
mapped by the memory management hardware. Regardless of the installed DSIMM
capacity, the memory starting address is as listed in the supporting tables.
4.6 OpenBoot PROM On-Board Diagnostics
The following sections describe the OpenBoot PROM (OBP) on-board diagnostics. To
execute the OBP on-board diagnostics, the system must be at the ok prompt.The
OBP on-board diagnostics are listed as follows:.
■ Watch-Clock Diagnostic—page 4-11
2 5 U0603/U0703 1 0x4000_0000 to 0x4fff_ffff (second double word)
3 6 U0404/U0504 0 0x6000_0000 to 0x6fff_ffff (first double word)
3 7 U0604/U0704 1 0x6000_0000 to 0x6fff_ffff (second double word)
TABLE 4-9 DSIMM Physical Memory Addresses (128-Mbyte)
Group Pair Sockets Bank Address Range (Physical Address [30:0])
0 0 U0401/U0501 0 0x0000_0000 to 0x1fff_ffff (first double word)
0 1 U0601/U0701 1 0x0000_0000 to 0x1fff_ffff (second double word)
1 2 U0402/U0502 0 0x2000_0000 to 0x3fff_ffff (first double word)
1 3 U0602/U0702 1 0x2000_0000 to 0x3fff_ffff (second double word)
2 4 U0403/U0503 0 0x4000_0000 to 0x5fff_ffff (first double word)
2 5 U0603/U0703 1 0x4000_0000 to 0x5fff_ffff (second double word)
3 6 U0404/U0504 0 0x6000_0000 to 0x7fff_ffff (first double word)
3 7 U0604/U0704 1 0x6000_0000 to 0x7fff_ffff (second double word)
TABLE 4-8 DSIMM Physical Memory Addresses (64-Mbyte) (Continued)
Group Pair Sockets Bank Address Range (Physical Address [30:0])