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Linux I/O port programming mini-HOWTO

Author: Riku Saikkonen <Riku.Saikkonen@hut.fi>

1. Introduction

2. Using I/O ports in C programs

• 2.1 The normal method
• 2.2 An alternate method: /dev/port

3. Interrupts (IRQs) and DMA access

4. High-resolution timing

• 4.1 Delays
• 4.2 Measuring time

5. Other programming languages

6. Some useful ports

• 6.1 The parallel port
• 6.2 The game (joystick) port
• 6.3 The serial port

7. Hints

8. Troubleshooting

9. Example code

10. Credits

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