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Maintenance & Service Guide
Presario 1200 Series
Model: 1245

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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.