收录查询

文章分类 -  Foo HardWare

[转]CMOS Memory Map
摘要：Below is a typical CMOS RAM memory map for an AT PC. Under a 128byte ISA compatible CMOS, 16 bytes (00h-0fh) is the real time clock, 32 bytes (10h-2Fh) is the ISA configuration data, 16 bytes (30h-3F... 阅读全文
posted @ 2009-04-27 23:05 -> 阅读(350) 评论(0) 推荐(0)
[转]How Graphics Cards Work
摘要：原文地址:http://computer.howstuffworks.com/graphics-card.htm by Jeff Tyson and Tracy V. Wilson ==================================================================== 1. Introduction to How Graphics Cards Wo... 阅读全文
posted @ 2009-02-24 22:42 -> 阅读(534) 评论(0) 推荐(0)
[转]定时器初值的计算
摘要：原文地址：http://blog.ednchina.com/njf/43258/message.aspx 一。10MS定时器初值的计算： 1.晶振12M 12MHz除12为1MHz，也就是说一秒=1000000次机器周期。10ms=10000次 机器周期。 65536-10000=55536(d8f0) TH0=0xd8，TL0=0xf0 2.晶振11.0592M 11.0592MHz除12... 阅读全文
posted @ 2008-03-27 12:19 -> 阅读(1250) 评论(0) 推荐(0)