Maintenance
& Service Guide
Presario 1200 Series
Model: 1245
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Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery
Pack Operations
Specifications
System I/O Address
| System I/O Address | |
| I/O Address (Hex) | System Function (Shipping Configuration) |
| 0000H - 000FH | Direct memory access controller |
| 0020H - 0021H | Programmable interrupt controller |
| 0022H - 0024H | Motherboard resources |
| 0040H - 0043H | System timer |
| 0060H - 0060H | Standard 101/102-Key or Microsoft Natural Keyboard |
| 0061H - 0061H | System speaker |
| 0064H - 0064H | Standard 101/102-Key or Microsoft Natural Keyboard |
| 0070H - 0071H | System CMOS/real time clock |
| 0080H - 0080H | Motherboard resources |
| 0081H - 008FH | Direct memory access controller |
| 0092H - 0092H | Motherboard resources |
| 00A0H - 00A1H | Programmable interrupt controller |
| 00C0H - 00DFH | Direct memory access controller |
| 00ECH - 00EFH | Motherboard resources |
| 00F0H - 00FFH | Numeric data processor |
| 0170H - 0177H | Opti Viper Max Dual PCI IDE Controller |
| 0170H - 0177H | Secondary IDE controller (dual fifo) |
| 01F0H - 01F7H | Opti Viper Max Dual PCI IDE Controller |
| 01F0H - 01F7H | Primary IDE controller (dual fifo) |
| 0220H - 022FH | ES1869 Plug and Play AudioDrive |
| 02F8H - 02FFH | Compaq Presario 56K-DF |
| 0330H - 0331H | ES1869 Plug and Play AudioDrive |
| 0370H - 0371H | Motherboard resources |
| 0376H - 0376H | Opti Viper Max Dual PCI IDE Controller |
| 0376H - 0376H | Secondary IDE controller (dual fifo) |
| 0378H - 037FH | Printer Port (LPT1) |
| 0388H - 038BH | ES1869 Plug and Play AudioDrive |
| 03B0H - 03BBH | NeoMagic MagicGraph 128XD |
| 03C0H - 03DFH | NeoMagic MagicGraph 128XD |
| 03F0H - 03F5H | Standard Floppy Disk Controller |
| 03F6H - 03F6H | Opti Viper Max Dual PCI IDE Controller |
| 03F6H - 03F6H | Primary IDE controller (dual fifo) |
| 03F7H - 03F7H | Standard Floppy Disk Controller |
| 03F8H - 03FFH | Communications Port (COM1) |
| 040BH - 040BH | Motherboard resources |
| 0480H - 048FH | Motherboard resources |
| 04D6H - 04D6H | Motherboard resources |
| 0800H - 0807H | ES1869 Control Interface |
| 0CF8H - 0CFFH | PCI bus |
| FCF0H - FCF7H | Primary IDE Controller (dual fifo) |
| FCF0H - FCFFH | Opti Viper Max Dual PCI IDE Controller |
| FCF8H - FCFFH | Secondary IDE Controller (dual fifo) |
Return to the index list of Specifications.
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  Revised: 25 February 1999  |
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