Browse Prior Art Database

Os/2 Extended Edition 1.1 Support of Variable Screen Sizes

IP.com Disclosure Number: IPCOM000099408D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

DuBois, LL: AUTHOR [+4]

Abstract

A method is described that determines the best use of the PC display adapter in order to show as much data on the display as the user would like to see. This method is used by the 3270 Emulation portion of the OS/2* Extended Edition Communications Manager product.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Os/2 Extended Edition 1.1 Support of Variable Screen Sizes

       A method is described that determines the best use of the
PC display adapter in order to show as much data on the display as
the user would like to see.  This method is used by the 3270
Emulation portion of the OS/2* Extended Edition Communications
Manager product.

      When the user configures his 3270 Emulation sessions via the
Communications Manager, he selects what 3278/79 presentation space
size he would like to emulate.  The presentation space size emulated
corresponds to the number of rows and columns of data that the 3270
host session will use. For instance, a MOD 2 screen size corresponds
to 24 rows and 80 columns, while a MOD 5 screen size corresponds to
27 rows and 132 columns. The user also has the option of emulating
the 'maximum' presentation space size that the display can handle.

      In addition to configuring the presentation space size to
emulate, the user can select whether he wants the display to only
show 25 rows and 80 columns, or whether he wants the 3270 Emulator to
put the display into a video mode that 'best fits' the presentation
space size that was selected.

      The default PC display only utilizes 25 rows and 80 columns for
displaying data on the screen.  This is cumbersome for users who
configure large presentation space sizes; part of the host screen
would be 'hidden' beyond the edge of the PC display screen.  The user
would be required to scroll in order to see the part of the
presentation space that is hidden. In order to solve this problem and
make it easier for the user, the OS/2 Extended Edition 3270 Emulator
automatically puts the display into a video mode that allows more
then 25 rows and 80 columns to be seen at a time.

      When the OS/2 Extended Edition 3270 Emulator is started, it
looks to see which presentation space sizes the...