TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

PAGE. [CALLI 145]
22.118.3 FUNCTION 2 (.PAGEM)
Moves or exchanges a page. The page·is moved ·from one virtual address
to another, or two pages exchange locations. You cannot move a page
to a location that is allocated to another page and you cannot
exchange pages unless the source pages are allocated.
Use one argument word for each page to be moved or exchanged. If you
use more than one argument word, the specified pages must be in
ascending order. Each argument word is of the form:
+B17+B35
In the argument word:
o
o
o
source is the page number of the page to be moved.
destination is the page number of the location to receive the
page.
The following flag can be set:
Flag
o
Symbol
PA.GAF
Meaning
Exchange the pages if this bit is set; move
the source page if this bit is not set.
22.118.4 FUNCTION 3 (.PAGAA)
Sets or clears the access-allowed bit for a page. The access-allowed
bit may be changed for any page in the working set. If a page is
accessed that has this bit off, a page fault occurs.
Use one argument word for each page whose access-allowed bit is to be
changed. If you use more than one argument, the specified pages must
be in ascending order. Each argument word is of the form:
XWD
flags,pageno
In the argument word:
o pageno is the page number of the page whose bit is to be
changed.
o
flags are optional and may include:
Flag
o
1
2
Symbol
PA.GAF
PA.GSA
PA.GDC
Meaning
Clear acce~s-allowed for the page if this
bit is set; set access-allowed if this bit
is not set.
Automatically sets access-allowed on page
fault; dispatch to page handler on page
fault if this bit is not set.
Ignores the fact that the page does not
exist, suppressing error codes PAGME% and
PAGCE%.
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