System Startup, Configuration, and Shutdown Reference Manual (32650-90892)
Appendix C 205
Reading Stable Storage and Nonvolatile Memory
Reading Nonvolatile Memory (NVM)
decimal address. The output is always in hexadecimal. In the following examples,
addresses are referred to in decimal notation and the output is in hexadecimal notation.
The last boot path, starting at byte address decimal 36, contains the status of the autoboot
and autosearch flags during the boot sequence.
Address decimal 68 contains the ISL revision number in ASCII.
ISL> READNVM 68
Address 68 contains 0x32363334 *** ISL Revision 2738 ***
The TIMESTAMP is in seconds since 1/1/70.Locations 76 through 123 contain the names
of the utilities booted. They are placed into a circular queue. The pointer at location 124
(first two digits) is positioned to the last utility executed. The pointer ranges from 1–6
(decimal) or 01–06 (hexadecimal), indicating which utility (1–6 — top to bottom on Figure
C-2.) was last executed.
ISL> READNVM 124
Address 124 contains 0x030600AC
(The last six digits vary)
The first two digits, 03, indicate that the pointer is positioned to the third utility name
location (decimal address 92) in the queue.
Read location 92 to find the hexadecimal representation of the name:
ISL> READNVM 92
Address 92 contains 0x53544152
(53=S 54=T 41=A 52=R which spells out STAR)
Since each location is limited to four characters, additional characters are located in the
next word:
ISL> READNVM 96
Address 96 contains 0x54202020
(54=T 20=Blank which adds the last T for start)