BIOS接口分析与探讨

BIOS INTERFACE ANALYSIS AND RESEARCH

所谓BIOS即基本输入输出系统,它包括:键盘输入管理、屏幕和打印机输出管理、磁盘操作管理等功能。没有BIOS,对IBM及其兼容机的应用和开发将是不可想象的。BIOS是一段8086/8088机器语言代码,调用BIOS是利用中断调用,只有汇编语言才能直接调用。由于操作系统提供了许多内部命令和外部命令,供用户对系统的调用,所以我们平常很少关心BIOS。在高级语言里,是以语句形式调用BIOS的,由于任何一种高级语言都只能使用一小部份BIOS的功能,因此,了解和学会应用BIOS是大有裨益的。本文介绍的是汇编语言和BIOS的接口分析,并介绍高级语言同汇编语言的接口。

BIOS is Basic input/output system, it includes keyboard management, screen and printer output management, disk operation management, etc.. It is not to be imagined without BIOS for applying and developing IBMperson Computer System. BIOS is a 8086/8088 machine language code segment. Maybe users don't show interest in BIOS, because users can call BIOS by high-level language statement,but none of high-level languages can provide all BIOS functions. Thus it is necessary for us to understand BIOS. This paper introduces BIOS, assemble language,high-level language interface analysis.