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Across the Boards

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Communications Device Drivers

Section 3 - General Information

Page 11

cfSOFTWARE Confidential,

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2000

Section 3 - General Information

General Device Support

The

Across the Boards

device-drivers that work through 3270 emulation all support the Model-2 devices with

24 lines of 80 columns (1920 byte buffers). Some drivers also support other 3270 Models (3, 4 and 5) and some

support extended attribute bytes (EABs).

Configuration Program - MAINCON

MAINCON.EXE is provided to generate configuration files for the device drivers. This module is menu driven

and fairly self-explanatory.

Some of the device drivers require MAINCON to be run in order to function properly. If the DRIVER does

allow/require configuration, the MAINCON menu will list it.

Keyboard Layout for Manual Mode 3270 Emulation

Select entry A1 of the MAINCON menu to configure keyboard and video monitor usage. The entry allows you

to assign key and Alt_, Ctrl_, and Shift_ key combinations as special 3270 keys (Enter, PF1-24, Clear, up/dn

arrows, etc.). The default keyboard layout is that of Irma’s E78.

3270 Controllers

IBM 3274 and 3276

Some of the older IBM 3274 controllers do not transmit the ASCII carat (^ hex 5E) character; they send a dash

(hex 2D) instead. This causes APPX applications to get an error #221 (“DUPLICATE CHARACTER...”) in

PPX_MESSAGE at CONNECT time. To correct his problem use the MAINCON configuration program:

-select A1 (Video Monitor Mode ...)

-set the Keyboard Language field to “9”

-save the configuration via F10

-when using APPX, be certain that the configuration file produced, MAINCFG.VDT, is either in

the current disk directory or in the directory pointed to by PPX_PATH.

As of 02/09/93, Configuration Support D Version 65.1 is the current microcode for the 3274.

IBM 3174

For 3174 Asynchronous Emulation Adapters (AEAs), see Section 5.1 Protocol Converter Special

Considerations.

To use the IBM 3174 controller or any 3174 look-alike, you must customize the controller as follows:

FILE TRANSFER AID 125. Miscellaneous Feature Option

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