Bay Networks 5390, Administering, Page: 759 / 888

893-741-B C3-83
Using the CLI Commands
Terminal Emulation
To make an ASCII terminal emulate a 3278 terminal, tn3270 simulates the special 3278 keys. For
example, a 3278 terminal has a key labeled EEOF that erases the contents of the current field from
the location of the cursor to the end of the field. An ASCII terminal does not have this key.
To simulate the 3278 keys, tn3270 maps them to key sequences you can enter from an ASCII
terminal. The key sequences tn3270 uses depend on the Model 5390 terminal type and are defined
in the standard UNIX file
/etc/map3270. So that tn3270 can access the file, you must copy it into (or create a link to it) the
directory on the load host that contains the Model 5390 operational image (see Configuration Check
List on page C3-89).
Each entry in a map3270 file begins with the name(s) of the terminal type(s) to which it applies. A
vertical bar (|) separates one type from another. Following the terminal type(s) are the key-sequence
definitions, grouped by function.
The following example shows part of a map3270 entry that applies to six terminal types – avt, vt100,
etc. Each definition begins with a reserved name, such as enter, identifying the IBM key or function.
Not all key names listed in a map3270 file refer to actual keys on a 3278 keyboard (Table C3-36
describes the key names).
printhost ip_addr printer_host ipaddr Specifies the IP address of a
host running a Berkeley-style
line printer daemon (lpd) server
and configured to accept print
requests from the Model 5390
server.
Table C3-35. Print-screen Parameters Set Using stty and na/admin
stty na / admin Explanation