Casio IT-2000W manual Display Driver Function, Vgac.Drv

7.8Display Driver

7.8.1Function

Display driver (VGA_C.DRV, VGA_NC.DRV) is a Windows display driver for a screen size of 192 x 384 dots. If this driver is used, maximized or iconized windows will not extend beyond the screen size and dialog boxes can be displayed in the center of the screen.

The relationship between the Display driver and application programs is shown in the following diagram.

Application Program

Windows

Display Driver

VGA Controller

LCD Display

Fig. 7.6

There are two types of display driver for various display modes.

VGA_C.DRV	Displays a mouse cursor.
VGA_NC.DRV	Does not display a mouse cursor.

7.8.2Startup Method

Display Driver can be loaded by making the following specification in the [boot] section of SYSTEM.INI. VGA_C.DRV or VGA_NC.DRV are included in SDK. If Windows is installed by the installer, VGA_C.DRV will be automatically copied into the F-ROM drive (D:) and SYSTEM.INI is also automatically created. Therefore, the user does not have to be concerned with this setup process.

Format:

[boot]

....

display.drv=vga_c.drv or display.drv=vga_nc.drv

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