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psd (SDM)

Displays and lets you modify a field from a page directory entry. Use the pdd command to display one or more complete entries.

psd (index).component


The directory entry to modify. The first entry is index 0.
The field in the entry to modify, from the following list:
ADDR Base address of the second-level page table.
AV Available bits for use by the OS.
S (Pentium-specific) Size bit: 0 means 4 KB page.
A Accessed bit: 1 means read or write to the page table.
PCD Page-level Cache Disable bit: 1 means caching is disabled.
PWT Page-level WriteThrough bit: 1 is writethrough, 0 is writeback.
U User/Supervisor bit: 1 is application code and data, 0 is OS memory.
W Read/Write bit: 1 is read/write, 0 is read-only.
P Present bit: 1 means the page is present in memory.


Use the following commands to display the sixth entry (index 5) of the page directory and change the accessed bit of that entry.

PDIR(5T) ADDR=006c1000 AV=0 S=0 A=1 PCD=0 PWT=0 U=1 W=1 P=1
1 - 0
PDIR(5T) ADDR=006c1000 AV=0 S=0 A=0 PCD=0 PWT=0 U=1 W=1 P=1

See Also

Debugging tools, System Debug Monitor (SDM), pdd