,- I Name I I L
Operation RDEVICE Operands ADDRESS=cuu, l
2701\ 2703 DEVTYPE= ICA , 3704 3705 A DAPTER=BSCA ( , BASEADD=cuu ]
, CL USTER=label 3270s ADDRESS=cuu is the real I/O address of the binary synchronous line to be used
by remote 3270s. The address, cuu, is three hexadecimal digits from 000 to FFF. 3704 3705 is the device type of the transmission control unit that controls
the line.
Note: The lines attached to the 3704/3705 must be controlled by the Emulation Program (EP). ADA PTER=BSCA
is the terminal adapter for the transmission control uni t. BSCA represents the: • IBM Binary Synchronous Terminal Adapter Type • IBM Binary Synchronous Terminal Control Type • Integrated Communications Adapter (ICA) Models 135, 135-3, and 138 • IBM 3704 and 3705 Communications Controllers
BASEADD=cuu
II for a 2701 II for a 2703 on the System/370 is the native subchannel address (load address) of the 3704/3705 that controls the physical line or lines. This operand is required
for correct operation of VM/370 recovery management for emulator
lines on a 3704/3705. Specify this operand only for 3704 and 3705. CLUSTER=label is the label of a CLUSTER macro that defines the cluster or
standalone station attached to this line. Part 1. Planning for System Generation 55

3270s The following examples are RDEVICE macros describing a nonswitched
point-to-point communication line connected to a 2701, 2703, and 3705. RDEVICE ADDRESS=078,DEVTYPE=2701,ADAPTER=BSCA,CLUSTER=CLUST001 The cluster station that is connected to this line is defined by the CLUSTER macro labeled CLUST001. The line at address 078 is controlled
by a 2701 transmission control unit. RDEVICE ADDRESS=080,DEVTYPE=2703,ADAPTER=BSCA,CLUSTER=CLUST020 The line at address 080 is controlled by a 2703 transmission control ana corresponding CLuSTER maCLO ib C1USTG20. RDEVICE ADDRESS=OB8,DEVTYPE=3705,ADAPTER=BSCA, BASEADD=OBO,CLUSTER=CLUST030 RDEVICE ADDRESS=OBO,DEVTIPE=3705,ADAPTER=TYPE1,MODEL=B4 CPTYPE=EP,CPNA"E=CEPOBO x
x
The line at address OB8 is controlled by a 3705 Communications
Controller and the corresponding CLUSTER macro is labeled CLUST030. Failure to code the CPNAME operand on the RDEVICE macro
instruction for the 3704/3705 base address causes V"/370 to mark the
device "not operational" at IPL time. The cluster on that 3704/3705 is
therefore unusable.
THE RESOURCE IDENTIFICATION CODES After the real 1/0 configuration file (DMKRIO) assembles successfully,
generate a list of the resource identification codes that correspond to
each line address. Give the list to the operations group at your
installation. The operator needs to know the resource identification
code when he issues the commands to control the operation of the remote 3270 lines and terminals.
The resource identification code is a four-digit hexadecimal code.
The low-order three digits of the resource identification code are the
resource address. The high-order digit is the line code.
The resource address is generated by V"/370; the order in which the TERMINAL macros appear in the real I/O configuration file (DMKRIO) determines the resource addresses of the terminals defined. Each CLUSTER macro defines a 3270 control unit; each 3270 control unit has a
resource address of X'OO'. The device defined by the first TERMINAL
macro after the CLUSTER macro (in the DMKRIO file) has a resource
address of X'Ol', the second has a resource address of X'02', up to the
maximum of X'20'. This resource address makes up the low-order three
digits of the resource identification code.
The line code is also generated by V"/370. Refer to the assembly
listing for D"KRIO to determine the line code (the high-order digit of
the resource identification code). Locate the label DMKRIORN near the
56 IBM V"/370 Planning and System Generation Guide