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Unformatted text preview: 3. Enable third party to copy bus architecture, retained patent rights iv. EISA 1. Extended Industry standard architecture 2. Ting the bus32-bit model 3. Extends the AT Bus 4. Favored by manufactures. a. Proprietary nature of MCA v. IRQ 1. Interrupt Request 2. Refers to the act of interrupting the Bus lines 3. Every device needs an IRQ 4. No two devices can share the same IRQ 5. Interrupt lines are often identified by an index with the format of IRQ followed by a number 6. When Installing and removing devices the System relies on interrupt request 7. When interrupt wire is charged CPU will stop and deal with the device 8. The 8259 hooked into the INT wire of the CPU a. The other eight wires were called interrupt request 9. Most of the IRQ wires were dedicated to certain devices 10....
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- Spring '10
- PCI Express, Computer buses, expansion bus, expansion bus crystal