I/O-Adressen


 
Physikalische Adressierung im PC
(I/O BIOS-Address-Map lt. IBM® / DELL®)

    ______________ _________________________________________________________
   | Address      | Device                                                  |
   | (Hex)        | (Geräte / Hardware intern)                              |
   |______________|_________________________________________________________|
   | 0000-000F    | DMA controller 1                                        |
   |______________|_________________________________________________________|
   | 0020-0023    | Interrupt controller 1                                  |
   | 0025-0027    |                                                         |
   | 0029-003F    |                                                         |
   |______________|_________________________________________________________|
   | 0024 & 0028  | SHASTA data register                                    |
   |______________|_________________________________________________________|
   | 0040-0043    | SYSTEM Timer 1                                          |
   |______________|_________________________________________________________|
   | 0048-004B    | Timer 2                                                 |
   |______________|_________________________________________________________|
   | 0060         | Keyboard controller data byte                           |
   |______________|_________________________________________________________|
   | 0061         | NMI, speaker control                                    |
   |______________|_________________________________________________________|
   | 0064         | Keyboard controller command/status byte                 |
   |______________|_________________________________________________________|
   | 0070, bit 7  | Enable NMI                                              |
   |______________|_________________________________________________________|
   | 0070, bits   | Real-time clock, address                                |
   | 6:0          |                                                         |
   |______________|_________________________________________________________|
   | 0071         | Real-time clock, data                                   |
   |______________|_________________________________________________________|
   | 0078         | Reserved (system board configuration)                   |
   |______________|_________________________________________________________|
   | 007C         | Reserved (system board configuration)                   |
   |______________|_________________________________________________________|
   | 0080-008F    | DMA page register                                       |
   |______________|_________________________________________________________|
   | 00A0-00A1    | Interrupt controller 2                                  |
   |______________|_________________________________________________________|
   | 00C0-00DE    | DMA 2                                                   |
   |______________|_________________________________________________________|
   | 00F0         | Reset numeric error                                     |
   |              | Coprocessor busy clear                                  |
   | 00F1         | Coprocessor busy reset                                 |
   |______________|_________________________________________________________|
   | 0170-0177    | Secondary IDE channel                                   |
   |______________|_________________________________________________________|
   | 01F0-01F7    | Primary IDE channel                                     |
   |______________|_________________________________________________________|
   | 0278-027B    | Parallel port 2                                         |
   |______________|_________________________________________________________|
   | 02F8-02FF    | Onboard serial port 2                                   |
   |______________|_________________________________________________________|
   | 0376         | Secondary IDE channel command port                      |
   |______________|_________________________________________________________|
   | 0377         | Secondary IDE channel status port                       |
   |______________|_________________________________________________________|
   | 0378-037F    | Parallel port 1                                         |
   |______________|_________________________________________________________|
   | 03BC-03BF    | Parallel port x                                         |
   |______________|_________________________________________________________|
   | 03E8-03EF    | Serial port 3                                           |
   |______________|_________________________________________________________|
   | 03F0-03F5    | Diskette channel 1                                      |
   |______________|_________________________________________________________|
   | 03F6         | Primary IDE channel command port                        |
   |______________|_________________________________________________________|
   | 03F7 (Write) | Diskette channel 1 command                              |
   |______________|_________________________________________________________|
   | 03F7, bit 7  | Diskette change channel 1                               |
   |______________|_________________________________________________________|
   | 03F7, bits   | Primary IDE channel status port                         |
   | 6:0          |                                                         |
   |______________|_________________________________________________________|
   | 03F8-03FF    | Onboard serial port 1                                   |
   |______________|_________________________________________________________|
   | LPT + 400h   | ECP port, LPT + 400h                                    |
   |______________|_________________________________________________________|
   | 0CF8-0CFB    | PCI configuration address register                      |
   |______________|_________________________________________________________|
   | 0CFC-0CFF    | PCI configuration data register                         |
   |______________|_________________________________________________________|
   | FF00-FF07    | IDE bus master register                                 |
   |______________|_________________________________________________________|



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