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

LOCK [CALLI 60]
22.83 LOCK [CALLI 60]
FUNCTION
Locks the current job into user memory. Note that there are two
calling sequences for LOCK. The standard calling sequence is
described under Calling Sequence I and the extended calling sequence
is described under Calling Sequence 2. The extended calling sequence
locks a segment starting at a specified page in physical memory.
The default function of this call locks the segments of the program as
set by bits 17 and 35 in the accumulator. Bit 17 must be set to lock
the high segment; bit 35 must be set to lock the low segment. The
specified segment(s) is locked into physically contiguous memory in
contiguous executive virtual memory space, unless you set flags in the
accumulator to specify otherwise.
NOTE
Programs using user mode extended addressing cannot
use the LOCK monitor call.
For more informat{on about locking jobs, refer to Chapter 9.
CALLING SEQUENCE 1
MOVE ac, [flags]
LOCK ac,
error return
skip return
In the calling sequence, the program supplies the flags, which include
one or more of the following bits:
Bit
13
15
16
Symbol
LK.HHP
LK.HNP
LK.HNE
Function
Allows locking the high segment in core above the
first 256K of physical core, if LK.HNP is not set.
Without this provision, the UUO will fail if the
high segment cannot be fit entirely within the
first 256K of core. 14 LK.HLC Locks the high
segment in user core and sets its cache bit. If
this bit is off, the high segment is locked with
its cache bit off. KL10 processors will run your
program faster ~f you use ~K.HLC; however, for a
real-time program that has direct access to
memory, you should not set LK.HLC.
Locks the high segment without forcing the job to
be locked into physically contiguous locations.
If this bit is not set, physical contiguity for
the locked high segment is required. To expand
the physically contiguous high segment segment
beyond 256K, set the LK.HLP bit (Bit 13) instead
of LK.HNP.
Locks the high segment without forcing it to
reside in executive virtual memory. If this bit
is not set, the locked high segment must reside in
executive virtual memory.
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