Transaction Subsystem Commands; Initialization K Display Options - Control Data Corporation CYBER 170 Series Operator's Manual

ACNcc.
Activate channel cc. This command alerts and
prepares peripheral equipment on channel cc for
the exchange of data.
DCNcc.
Deactivate channel cc. As a result, peripheral
equipment on channel cc stops and any current I/O
operation is terminated.
DCHcc.
Drop channel cc. This is a software function to
release the current reservation of channel cc.
MCHcc.
Master clears and removes all 3000-series
peripheral equipment selections on channel cc
(6681 function code 17008 is issued).
IANcc.
Input to pseudo A register from channel cc.
LDC,nnnn.
Load pseudo A register with
nnnn
(normally a
peripheral equipment function code). The current
value of nnnn is the rightmost field in the header
of the right screen display (adjacent to· channel
status).
OANcc.
Output contents of psuedo A register to channel
cc.
FNCcc,xxxx.
Output function code xxxx to channel cc.
FCNcc.
Output a zero function code (no activity) to
channel cc. This releases all equipment selections
on that channel.
TRANSACTION SUBSYSTEM COMMANDS
The following commands control operation of the
transaction subsystem. Bring the transaction subsystem to
control point
2
via the TAF command before issuing these
commands.
INITIALIZATION K DISPLAY OPTIONS
When the transaction executive is brought to control point
2, the message REQUEST *K* DISPLA Y appears at the
control point. Respond with the entry:
K,2.
3-28
Any of the following initialization options can then be
entered. If no values are to be changed, enter the
command:
K. END.
Values are decimal unless otherwise indicated.
K.DB1=db.
or
K.DB2=db.
or
K.DB3=db.
Requests the data manager to initialize only those
I
data bases specified by name db. You can only
specify names of data bases in the DBID file. If
not used, the data manager initializes all data
bases found in the DBID, TDBID, and/or CDBID
files.
K.ECS=n.
Sets the ECS field length to be used by the
transaction executive; n is octal thousands of
words. Default =
o.
K.END.
Ends input of the transaction executive
initialization parameters. Initialization· is
completed when the normal running display
appears.
K.MDM=n.
Sets the number of data manager buffers (one to
six) to be reserved. Default = 3.
K.MFL=n.
Sets the maximum field length "(40K to 300K) to
be used by the transaction executive. Default =
lOOK.
K.REC=a.
Specifies the setting of the recovery bit in the
user area of each terminal status table entry (YES
or NO). Default = NO.
K.SCP=n.
Changes number of subcontrol points (2 to 31).
Default = 12.
K.TLF=a.
Changes the name of the system task library file
(any legal file name). Default = TASKLIB.
K.CMB=n.
Changes the maximum number of communication
blocks (4 to 40) allowed to the subsystem. Default
= 10.
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