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

PAGE. [CALLI 145]
22.118 PAGE. [CALLI 145]
FUNCTION
Manipulates pages and the data associated with those pages
job's address space.
in your
CALLING SEQUENCE
MOVE ac, [XWD fcncode,addr]
PAGE. ac,
error return
skip return
addr:
length
first argument
last argument
In the calling sequence, the program
information:
supplies the following
o
o
fcncode is one of the function codes described below.
addr is the address of the argument list.
o length is the number of words that follow in the argument
list; and the words up through last argument are arguments
for the given function, usually page numbers of memory pages
being manipulated. The value of length cannot be O.
The length can be specified as a negative value. In this
case, the argument is the page number of the first page in a
set, where the set contains that page plus the number of
consecutive pages indicated by the value of length.
For example, when length contains a negative value (such as
-3), the argument (for example, page number 401), is the
first of 3 consecutive pages (for this example, pages 401,
402, and 403), to be manipulated.
Therefore, in functions such as .PAGEM, where the argument
word contains two page numbers, a negative value in length
indicates the number of pages in both halves of the argument
word. For example, a value of -2 in length, for a PAGEM.
function on the argument word [400,,200] includes the page
numbers [401,,201].
The pages you can specify are restricted by the following attributes:
o
Page zero cannot be paged out or destroyed.
o Page numbers must be specified in numerically increasing
order.
o
o
o
If the high segment is sharable, it cannot be paged out.
If the page is a Spy page, it cannot be paged out.
If a page is locked in core, it cannot be paged out.
The function codes and their meanings are described in the following
sections.
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