IBM 3708 Description page 211

• Hazeltine ESPRIT I and ESPRIT II
• Hazeltine 1500 (requires manual intervention to direct data to its Aux port)
• Lear Siegler ADM 3A
• ROLM Cypress, Cedar (requires manual intervention to direct data to its
Aux port)·
• ROLM Juniper
• TeleVideo 910, 925, 950
• Teletype 5410 and 5420
• WY -50® (wySE 50).
In addition, UDTs may be used to define this type of operation. See "The
Terminal Table Format" on page 4-54 for details about the structure of terminal
tables for UDTs. In particular, the START PRINTER and STOP PRINTER
terminal control sequences, and the SUSPEND DISPLAY, RESUME
DISPLAY, SUSPEND PRINTER, and RESUME PRINTER keyboard
functions should be included in a UDT to provide display-with-printer functions.
Printers in this mode of operation, like printers attached directly to 3708 ports, are
available for output from the SNA host or other displays in system, local, or shared
mode. Input from printers attached to displays is not explicitly supported. All input
from MLU configurations is assumed to come from the display.
3708 Configuration
Host Definition
Port Definition
To attach a display with an attached printer (MLU) to the 3708, the port must be
configured for a keyboard display with printer. As with directly attached printers,
the ports and host that can access the auxiliary port printer must also be defined as
described in the next two sections.
In the definition of the host port at the 3708, the options that are affected by
attachment of a display with printer are the Host Printer Source Field and the Host
Keyboard Source Field. For each port defined as display with printer, the
corresponding position in these fields is set to 1. Normally, this definition means
that the positions in both source fields will be I as would be the case when the
printer is defined to a particular host and the display is also defined so that it can
communicate to that host. (If the configuration includes two SNA hosts, it is
possible to have the display defined so that it can report only to host A and the
printer only to host B.)
If there are two SNA hosts, the printer should appear in only one of the hosts'
printer source fields, the same as for a directly attached printer.
The port configuration options that require special consideration to define a
display-with-printer are as follows:
• LU device number - All three device numbers can be used for this type of port
definition, depending on whether there are one or two SNA hosts in the
configuration. The first device number defines the address for the display when
it is communicating with host A; the second is the address for the display when
communicating with host B; the third is the address for the printer on whichever
host it is defined.
Note: Device numbers should be unique. The 3708 does not check for
duplicates. Duplicate device numbers can cause unpredictable results.
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IBM 3708 Description