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7.5 Simulation Driver
The simulation driver is used to develop on a personal computer the application programs that run
on the IT-2000.
The application development libraries supported for this terminal control only the hardware that is
compatible with the IBM PC/AT. This is important to remember if the application programs for the
terminal are developed on a personal computer. Although each library is linked to the application
program to form an executable program, they do not contain code that is specific to the hardware of
the handy terminal. Consequently, if a simulation driver is used rather than one of the drivers
dependent on the terminal hardware, the application program can be made to run, without
modification, on the personal computer. This is the basic concept of simulation.
The shaded portion in the diagram below shows the simulation drivers to be replaced However, for
the mouse driver, use Microsoft's mouse driver. This is because the mouse driver on the terminal
simulates the operations of the Microsoft Mouse driver, while other drivers simulate the actual
operations on the terminal.
Fig. 7.7
In the following chapters, these simulation drivers are explained in detail.
System Driver (SIM)
System Library
Application Program
Keypad LibraryOBR Library
Keypad Driver (SIM)
Hardware Window
Driver
(
SIM
)
IBM PC/AT
Standard Mouse Driver
INT33