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Expansion Bus DR-1 Student Version

Expansion Bus DR-1 Student Version. You will need: One text per person Paper and pen(cil) Note: add info from this url to presentation: http://www.karbosguide.com/hardware/module5a4.htm. Read “Expansion Bus” Objectives & Goals p. 201. Q1 Which goal most interested you? Q2

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Expansion Bus DR-1 Student Version

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  1. Expansion Bus DR-1Student Version You will need: One text per person Paper and pen(cil) Note: add info from this url to presentation: http://www.karbosguide.com/hardware/module5a4.htm

  2. Read “Expansion Bus” Objectives & Goals p. 201 Q1 • Which goal most interested you? Q2 • Which objective most interested you?

  3. Read 201-202 to “Historical/Conceptual Q3 • What are the three hurdles would-be expansion card developers need to leap?

  4. Read “Structure & Function of the Expansion bus”: pp. 202-204 Q4 The expansion bus connects to the rest of the PC through the __________. Q5. The speed of the Northbridge and South bridge is determine by the __________ __________. Q6 • Why do we need an expansion bus crystal?

  5. Read “PC Bus” p. 205 Q7. • What was the bus speed for early PCs? Q8. • What is one reason Apple did not dominate the PC market?

  6. Read “Sixteen-Bit ISA” p. 205-206 Q9 • Compare Fig 6-7 and 6-8. What is the physical difference between these bus slots? Q10 • What is the electronic difference? Q11 • Each slot has two names. What are they?

  7. Terms: Create flash cards for the following terms for each reading.

  8. Flash Cards • Fold 8 ½ X 11 scratch paper in half length ways. • Fold in half again. • Fold in half again. • Unfold paper and cut along fold lines • You will end up with 8 small pieces of paper. Fold each of these in half. • Draw a picture (if appropriate) of the item on one side with its name • Write a description of the term on the other side • Use cards to learn names and descriptions. Practice with flash cards during Entry Task or free time.

  9. Flash Card Holder • Label with Name, Date, Period • Put a title on the holder: “Expansion Bus” • Put flash cards in the holder and clip into your binder for safe keeping

  10. Terms 1-3: Complete Flash Cards

  11. Read “System Resources” pp. 206-211 to “Hexadecimal” Q12 • What four things do expansion cards use to communicate with the CPU and get its attention? Q13 • If everything is connected to the EDB and Address Bus how does the CPU and devices communicate with each other?

  12. Add to discussion

  13. Questions Q14 - Q15, pp 206 - 211 Q14 • What is this method of CPU/Memory/Device communication called? Q15 • Use the Device Manager to find the I/O address of the keyboard.

  14. Term 4: Complete flash card then- Read “Hexadecimal” to “Interrupt Requests”, pp. 212-214 Hexadecimal • A numbering system using base 16 • Easier for humans to use than digital and easy for computers to convert to binary. TIP: Techs tend to drop the leading zero and add an “h” (for hexadecimal) at the end of I/O addresses. So, if you see 3F8h on the A+ test just read it as hexadecimal 03F8

  15. Numbering Systems

  16. - Terms 5-9: Complete flash card - Read “The Rules of I/O Addresses” to “Interrupt Requests” pp. 212-214

  17. Q15 – Q17, pp. 212 - 214 Q15 • What are the three basic rules for I/O Addresses? Q16 • Check the hard drive I/O address and the speaker address on your computer. Why does the hard drive have more? Q17 • Table 6-2, p. 214 shows address 0000-03FF. What has changed about this table and address wires with newer systems?

  18. IRQ-I/O Addresses: Read pp. 215 – 220 to DMA • Note: The A+ certification exams expect all A+ certified techs to know the COM and LPT resource assignments. • Copy this table and memorize it for the A+ test.

  19. Questions Q18 - , pp. 215 – 220 Q18 • What mechanism is used to prevent all devices from talking at once? Q19 • What was the original “traffic cop” which connected to the CPU via the interrupt wire? Q20 • Describe how the 8259 worked.

  20. A+ Tip • You may be asked which IRQs are dedicated to which devices, especially IRQ0 and IRQ1. Add these to your I/O Address Table

  21. Question 21 , pp. 215 – 220 • Q21 • Wait a minute. If no devices can share the same IRQ, how is it the COM1 and COM3, COM2 and COM4 have the same IRQ?

  22. - Terms 7-9: Complete Flash Cards- Read pp. 220-225 to “Modern Expansion Bus”

  23. Questions 22 – 25, pp. 220-225 Q22 • Physically, what is the DMA? Q23 • DMA does what for the CPU? Q24 • Draw Fig 6-26, p. 223 (13 pts) Q25 • Describe how this circuit works (3 pts)

  24. More on DMA • Limitations • Designed for ISA bus (max. = 8 MHz • Only 8/16 bits wide • Most devices today use Bus Mastering • Totally automatic and invisible to the user • See Hard Drives for more

  25. The Modern Expansion Bus- Terms 10-12: Complete Flash Cards- Read pp. 225 - 227

  26. - Terms 13-17: Complete Flash Cards- Read p. 228 “VL-Bus”

  27. - Terms A18-A20: Complete Flash Cards- Read pp. 228 - 230

  28. - Term 21: Complete Flash Card- Read p. 231 to “Installing Expansion Cards”

  29. Assignments • MindsOn • EB DR 1: PowerPoint done as class with video • EB DR 1:Flash Cards (23 terms): Practice Daily • EB DR 2: Installing/Troubleshooting Expansion Cards • HandsOn: • Chapter 6.0 Expansion Bus Lab Exercises • CyberLesson • Numbering Systems

  30. Assignment Rotation • Day 1-2 • Group A = Minds On • Group B = CyberLesson • Day 3-4 • Group A = Lab • Group B = Minds On • Day 5-6 • Group A = CyberLesson • Group B = Lab

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