Table of Contents
Advertisement
Attachment of the 3274 to the Host
An IBM 3274 Control Unit can be attached to the host through a network
using either SDLC or BSC protocols, or directly by a channel. For further
details of 327 4 attachment, see Appendix A.
Stand-Alone Operation
The Graphics Control Program also allows a 5279 or 5379 work station to be
used in a stand-alone mode, unconnected to a host. This mode of operating
provides a single PC DOS session with the advantages of the work station's
graphics functions and full screen utilization. Stand-alone mode is intended
for occasional use, such as when manipulating a large locally-stored
picture, or running a large PC application program.
Customizing the Work Station
Individual users will have their own unique requirements for their work
stations. Therefore the graphics control program provides a utility that
leads users through a set of menus to customize and record the systems that
they require. The choices that the user can make include:
1.
The number of host sessions required, and whether each one is to have
graphics capability as well as alphanumerics.
2.
The number of alphanumeric notepads required.
3.
Whether a PC DOS session is required, and if so, whether it is to use
the graphics function through the graphics procedure interface.
4.
Whether local printing or plotting is required.
5.
Whether the keystroke recording and playback facility is required.
6.
If the work station uses the 5279 Display, whether it will use the default
character size on a 80 x 32 character screen or the smaller size on a 80 x
49 screen.
7.
If the work station uses a 5379 Display with a 5151 Monochrome
Display as a second monitor, whether the sessions will use dual-screen
mode.
Some users may like to define more than one system.
An important part of the customization process is the calculation of
memory requirements. The amounts required for the various options are
given in Appendix E. There are different tables for the IBM 5279 and the
IBM 5379 because of the different ways in which their graphics function
and picture storage are arranged.
Chapter
4.
The Graphics Control Program
49
Advertisement
Table of Contents
