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| Detailed descriptions |
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| 17.5 System resources |
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| I/O address (hex) | Size | Description of the basic function | Possible alternative | |
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| (bytes) |
| function |
| 02E8 | 02EF | 8 | Reserved |
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| 02F8 | 02FF | 8 | COM2 | Switchable in Setup, then |
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| free |
| 0300 | 031F | 32 | Unused |
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| 0320 | 032F | 16 | Unused |
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| 0330 | 033F | 16 | Unused |
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| 0340 | 035F | 32 | Unused |
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| 0360 | 0367 | 8 | Unused |
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| 0370 | 0371 | 2 | SOM |
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| 0372 | 0375 | 4 | Unused |
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| 0376 | 0376 | 1 | Secondary EIDE channel |
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| 0378 | 037F | 8 | LPT 1 | Switchable in Setup, then |
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| free |
| 0380 | 03AF | 48 | Unused |
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| 03B0 | 03BB | 12 | S3 Graphics Pro Savage DDR |
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| 03BC | 03BF | 4 | Reserved |
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| 03C0 | 03DF | 16 | S3 Graphics Pro Savage DDR |
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| 03E0 | 03E7 | 8 | Unused |
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| 03E8 | 03EF | 6 | Reserved |
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| 03F0 | 03F5 | 6 | Standard floppy disk controller |
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| 03F6 | 03F6 | 1 | Primary EIDE channel |
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| 03F7 | 03F7 | 1 | Standard floppy disk controller |
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| 03F8 | 03FF | 8 | COM1 | Switchable in Setup, then |
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| free |
| Dynamic area; resources are managed via Plug and Play |
| |||
| 0400 | 0777 | 888 | Unused |
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| 0778 | 077F | 8 | ECP LPT 1 |
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| 0780 | 0CF7 | 1400 | unused |
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| 0CF8 | 0CFB | 4 | PCI configuration index | steady |
| 0CFC | 0CFF | 4 | PCI configuration data | steady |
| 0D00 | 0EFF | 512 | Unused |
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| 0F00 | 0F4F | 80 | Super IO |
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| 0F50 | 0FFF | 176 | Unused |
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| 1000 | 10FF | 256 | Internal allocation |
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| 1180 | 11FF | 128 | Internal allocation |
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| 1800 | 187F | 128 | Internal allocation |
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| 8800 | 8BFF | 1023 | SATA RAID Controller |
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| 8C00 | FEFF | 29288 | Unused at SATA RAID |
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| 8870 | 8897 | 39 | Unused |
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| 8898 | FEFF | 30311 | Unused at PATA RAID |
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| 1880 | 886F | 28655 | Unused |
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| FF00 | FF0F | 16 | EIDE bus master register |
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SIMATIC Panel PC 877 | |
Operating instructions, Release 07/2006, |
