That is a Specific form of read cycle implicitly resolved to the interrupt controller, which returns an interrupt vector. The 32-little bit address subject is disregarded. A person attainable implementation is always to generate an interrupt acknowledge cycle on an ISA bus employing a PCI/ISA bus bridge. 点评：酷睿版支持扩展内存和硬盘，上面的那台锐龙版不支持。酷睿版扩展性更强，适合长... https://nathanlabsadvisory.com/cis-center-internet-security/