This code allows you to read character from keyboard IBM PC

1981 年8 月，IBM 公司最初推出的个人计算机IBM PC 使用的CPU 是Intel 8088。在该微机中地址线只有20 根(A0 – A19)。在当时内存RAM 只有几百KB 或不到1MB 时，20 根地址线已足够用来寻址这些内存。其所能寻址的最高地址是0xffff:0xffff，也即0x10ffef。对于超-A20 地址线问题.doc

The diskettes associated with this book contain most of the code, organized by chapter, and a set of sample images. The code will compile using Borland Turbo-C on an IBM PC or compatible having a VGA card. The basic code for the Alpha

VGA (video graphics array) is a video display standard introduced in the late 1980s in IBM PCs and is widely supported by PC graphics hardware and monitors. We discuss the design of a basic eight-color 640-by-480 resolution interface for CRT (c