TERKINAL P.lacro Figure 18 shows some examples of valid
information on polling sequences, see Des£!iEtion. polling characters. 111Q Info!!ati2n For more Displa,I r I 3271, 3274, and 3276 Addressing 3275 Addressing
,------------------------------------------------------------------------ ,General Poll Ifor Control I Unit 5 I . I , I I ,Specific lPoll Device ,4 on Control ,Unit 5 I I , , ,Select ,Device 4 Ion Control I Unit 5 I I I L I Control IUnit I Address I ,EBCDIC ,General Poll I ------Ifor Control I C5 IUnit 5 , C5 I 1------------------- , , Device I Address
7F
7F I I 1 Control C5 ISpecific IUnit C5 IPoIl 1 Address I for Control 1 IUnit 5 1----------------------------1 ,Device C4, I Address C4 I lControl E5 ISelect IUnit E5 IControl , Address I Unit 5 , I 1----------------------------1 I Device C4 I I Address C4 I Figure 18. Examples of Remote 3270 Addressing 1 Control IUnit I Address , I EBCDIC I 1 C5 I C5 1-------------------------------- 1 Device I Address IControl IUnit 1 Address 1 I IDevice I Address I Control IUnit I Address I I I Device IAddress 7F
7F
C5
C5 40 40 E5
E5 40 40 Part 2. Defining Your VP.I/310 System 141

RDEVICE Macro RDEVICE Macro Use the RDEVICE macro instruction to generate a real device block (RDEVBLOK). You must code an RDEVICE macro for each real I/O device in
your I/O configuration. The maximum number of real devices that can be on the real VM/370 system is 3276.
The RDEVICE macro instructions describe each device, or group of
devices, attached to the System/370. These can be in any order, but
they must be contiguous, and must precede all RCTLUNIT and RCHANNEL
macros in the real I/O configuration file (DMKRIO). Also, the RDEVICE macro instructions must follow all the groups of CLUSTER and TERMINAL macros, if there are any. The first RDEVICE macro generates the label DMKRIODV, which indicates the start of the real device blocks to CP.
The name field may not be specified for the RDEVICE macro instruction; if is it is Thp generates a name by appending the device address to the characters RDV. For example, the name RDV234 is generated for the device address 234.
Before you code an RDEVICE macro for a 3704 or 3705 device, see the a VM/370 System that Supports the section of Part
1 for additional information and special considerations.
Also, see the "Planning Considerations for Remote
Part 1 before you code an RDEVICE macro for a binary
that is used by remote 3270s. 3270s" section of
synchronous line
Before you code an RDEVICE macro for a 3800 printer device, see the
"Generating a VM/370 System that Supports the 3800 Printer" section of
Part 1 for additional information and special considerations.
142 IBM VM/370 Planning and System Generation Guide