System Library - Casio IT-2000W Technical Reference Manual

8.6.2 System Library

Overview
The IT-2000 has various dedicated functions that can control the backlight and the power of various
devices by software. These functions are consisted of the programs of the expanded BIOS in the
ROM and the keyboard controller (refer to Chapter 6 "Keyboard Controller".). This library is used to
call the expanded BIOS and the keyboard controller from application programs developed with the C
language or Visual BASIC. The system library is consisted of the following files.
SysLib.H .....................
LibSysW.LIB ..............
SysCall.DLL ...............
VKD.386 ....................
The relationship among the files is as follow. If your application program is developed with
C language, LibSysW.LIB must be linked. It can call automatically SysCall.DLL when the
application program is executed.
Application Program
written by VC
KBC
Header file for system library (for C language)
Common library for each memory model (for C language)
System library
Communication module for keyboard controller
LibSysW.LIB
VKD.386
Fig. 8.9
158
Application Program
written by VB
SysCall.DLL
Ext. BIOS