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

TSK. [CALLI 177]
22.174 TSK. [CALLI 177]
FUNCTION
. .
Performs miscellaneous functions for network nodes. This monitor call
can be used by applications that wish to perform non-blocking connects
and disconnects. Also, it can be used by applications translating
ANF-IO protocol into another protocol. These applications usually
require more control over the connect message than that provided by
the standard LOOKUP/ENTER sequence.
The TSK. monitor call is an alternative to using the LOOKUP/ENTER
method for opening/defining network links. Once the link enters the
run state (.TKSOK), the norma: OUT and IN monitor calls can be used to
send or receive data over the network link. The TSK device cannot be
designated as an MPX-controlled device, but asynchronous I/O can be
performed.
Refer to Chapter 5 for more information about using the TSK.
call.
monitor
CALLING SEQUENCE
MOVE ac, [XWD length,addr]
TSK. ac,
error return
skip return
addr: EXP func-code ; . TKAFN
EXP channo ;.TKACH
EXP argl ; . TKAAl
EXP arg2 ; . TKAA2
EXP arg3 ; . TKAA3
In the calling sequence, the program supplies the following variables:
o
function is one of the function codes listed below.
o channo is the I/O channel number on which the device TSK has
been opened.
Each argument is an argument for the specified function code.
Most arguments will be pointers to Network
Descriptors (NPDS), having the following format:
Process
XWD
length,addr
o length is the length of the NPD (must be at least 3).
o
addr is the location of the NPD.
Associated with each task link are two processes: the local process
and remote process. The processes are named by the NPD. The format
of the NPD is:
Offset
o
1
2
Symbol
.TKNND
.TKNLN
.TKNPN
Meaning
Node number (-l implies any node, but is not valid
when used in the remote passive NPD) .
Length of ASCII process name that follows
of characters) .
First word of the ASCII process name.
(number
22-453