3270s end of the DMKRIO assembly listing. This label identifies a list of all
the· lines used by remote 3270s and by 3704/3705 Communications
Controllers in NCP mode. The high-order digit is the line code and is according to the order in which the line addresses appear in
the list. The first line address is assigned a line code 0 to complete
its resource identification code, the second is assigned 1, and so on up
to the last line. VM/370 supports a maximum of 16 binary synchronous
lines for use by remote 3270s; thus, the maximum value of the high-order
digit is F. Figure 9 shows you a sample DMKRIO assembly listing and the
corresponding line codes.
r------------------------------------------------------------------------------------
Sample of DMKRIO Assembly Listing Line
Code (in
hexadecimal)
L DMKRIORN DC P'4' DC AL2«RDV07S-DMKRIODV)/S) DC XL2'07S' DC AL2«RDV07A-DMKRIODV)/8) DC XL2'07A' DC AL2«RDV079-DMKRIODV)/8) DC XL2'079' DC AL2((RDV07B-DMKRIODV)/8) DC XL2'07B' o
2
3
Figure 9. Example of Determining Line Code for Remote 3270 Resource
Identification Codes
Once you determine the resource identification codes for the devices
in your remote 3270 configuration, generate a list for operations. The
list should include the following information: Line address Line code Resource address Label of plug on control unit panel Resource Identification code Device type The plug panel of the 3271 control unit and 3274 control unit Model 1C have up to 32 ports where terminals and printers can be
attached. The 3276 has up to S ports where the 3276 integrated display
is attached and where up to 7 additional terminals or printers can be
attached.
AN EXAMPLE OF A REMOTE 3270 CONFIGURATION This example shows you the contents of the real 1/0 configuration file
to define the following remote 3270 configuration: A clustered 3271 control unit with eight ports A standalone 3275 display station
The macros are coded so that the 3271 clustered control
support eight display devices, or six display devices and two
To define such a configuration, you must code 2 CLUSTER, 16
and 2 RDEVICE macros defining the 2 separate clusters.
standalone control unit, with one display and one printer,
supported by the following macros. To define it, you must CLUSTER, one TERMINAL, and one RDEVICE macro.
unit can
printers. TERMINAL, A 3275
is also
code one Part 1. Planning for System Generation 57
3270s The real I/O configuration file for this example is: DMKRIO CSECT CLUST078 CLUSTER TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL TERMINAL CLUST07A CLUSTER TERMINAL CLUST079 CLUSTER TERMINAL TERMINAL TERMINAL TERMINAL
TERMINAL TERMINAL TERMINAL RDEVICE
RDEVICE
RDEVICE CUTYPE=3271,GPOLL=407F,LINE=078 TERM=3277,SELECT=6040,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C1,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C2,FE1TURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C3,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C4,FEATURE=OPRDR,KODEL=2 TERM=3277,SELECT=60C5,FEATURE=OPRDR,MODEL=2 TERM=3286,SELECT=60C6,MODEL=2 TERM=3284,SELECT=60C7,MODEL=2 CUTYPE=3275,GPOLL=407F,LINE=07A TERM=3275,SELECT=6040,FEATURE=OPRDR,KODEL=3 CUTYPE=3271,GPOLL=407F,LINE=079 TERM=3277,SELECT=6040,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C1,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C2,FEATURE=OPRDR,KODEL=2 TERM=3277,SELECT=60C5,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C6,FEATURE=OPRDR,MODEL=2 TERM=3277,SELECT=60C7,FEATURE=OPRDR,MODEL=2 ADDRESS=078,DEVTYPE=3705,AD1PTER=BSCA, BASEADD=OBO,CLUSTER=CLUST078 ADDRESS=07A,DEVTYPE=3705,AD1PTER=BSCA, BASEADD=OBO,CLUSTER=CLUST07A ADDRESS=079,DEVTYPE=3705,ADAPTER=BSC1, B1SEADD=OBO,CLUSTER=CLUST079 x
x
x
In this configuration, if the 3271 cluster control unit is on line 078 there are six display devices and two printers supported. If the 3271
cluster control unit is on line 079, eight display devices and no
printers are supported. Display devices can be interchanged among
resource addresses allocated to display devices and printers can be
interchanged among resource addresses allocated to printers; but a
printer cannot be attached at an address defined for a display device,
and vice versa.
After the DMKRIO file assembles successfully, you should generate a
list of resources for the operations group. Your list should be similar
to the list shown in Figure 10; it corresponds to the preceding example.
58 IBM Planning and System Generation Guide
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