EISA is the 16bit version of ISA, and was used starting with I80286. So I can say this is the real ISA. The original 8bit ISA was used only with 8088 and a bit with 8086. All the current implementations, including PC104 are EISA. http://www.mindshare.com/pdf/eisabook.pdf EISA System Architecture (2ed)[P225] Addison-Wesley [align=right][color=#000066][此贴子已经被作者于2003-7-18 9:53:59编辑过][/color][/align]