Maintenance & Service Guide
Presario 1200 Series
Model: 1245
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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 |
| Microsoft Natural Keyboard | ||
|
|
| |
0061H | - 0061H |
| System speaker |
0064H | - 0064H |
| Standard |
| 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 | |
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) | ||
|
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