1. LAB 3 TA: Hu-Hsi Yeh( 葉護熺 ) Date: 2005 3/21 E-mail: r93943122@ntu.edu.tw

2. LaDS, GIEE, NTU Spring 2005 Outline I/O driven IRQ Lab questions

3. LaDS, GIEE, NTU Spring 2005 Handshaking http://rebrown.com/rebrown/handsh.htm

4. LaDS, GIEE, NTU Spring 2005 I/O Driven Busy waiting DMA (Direct Memory Access) Interrupt

5. LaDS, GIEE, NTU Spring 2005 I/O Driven Busy waiting Keep asking I/O device if they have data to transfer or not.

6. LaDS, GIEE, NTU Spring 2005 I/O Driven DMA (Direct Memory Access) Short for DMA, a technique for transferring data from main memory to a device without passing it through the CPU.

7. LaDS, GIEE, NTU Spring 2005 I/O Driven IRQ( Interrupt Request) Some hardware need some methods to call the process of CPU. But there should be some order and priority.

8. LaDS, GIEE, NTU Spring 2005

9. LaDS, GIEE, NTU Spring 2005 IRQ Conflicts There are few IRQ numbers open, but we still have a lot of devices such as USB, AGP, PCI, RAID, SATA, LAN, 1394. Solution: We have to share IRQ numbers. It depends on each motherboard.

10. LaDS, GIEE, NTU Spring 2005 Assign a IRQ Number In win98 & win ME click “ 系統 ” and open “ 裝置管理員 ” In win 2k & win XP the same but...........

11. LaDS, GIEE, NTU Spring 2005 Plug-and-Play (PnP) Plug-and-Play automatically tells the software (device drivers) where to find various pieces of hardware (devices) such as modems, network cards, sound cards, etc.

12. LaDS, GIEE, NTU Spring 2005 Plug-and-Play (PnP) PnP allocates the following "bus-resources" to both drivers and hardware: I/O addresses, memory regions, IRQs, DMA channels (ISA bus only).

13. LaDS, GIEE, NTU Spring 2005 Lab Question1 What are the IRQ numbers for yours devices?

14. LaDS, GIEE, NTU Spring 2005 Lab Question2 How to change keyboard’s repeat delay and repeat rate?

15. LaDS, GIEE, NTU Spring 2005 Lab Question3 How to setup/add/switch input methods?