In this designing, we import HAL theory into the BIOS software system and futherly divide HAL into three layers of structure due to its characteristics . Thus ,its compatibility,robust,porting and expandency can be superior to traditional PC BIOS.

• 我们将硬件抽象层 HAL(Hardware Abstract Layer)的思想引入 PC BIOS 的软件设计之中,并根据 PC BIOS 的独有特点进一步将硬件抽象层细分为三层结构,使其兼容性、坚固性、可移植性及可扩展性远远优于传统的 PC BIOS。