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
(index)
.component
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.
..pdd(5t) PDIR(5T) ADDR=006c1000 AV=0 S=0 A=1 PCD=0 PWT=0 U=1 W=1 P=1 ..psd(5t).a 1 - 0 ..pdd(5t) PDIR(5T) ADDR=006c1000 AV=0 S=0 A=0 PCD=0 PWT=0 U=1 W=1 P=1