Maintenance &
Service Guide
Presario 1200 Series
Models: 1255, 1257, 1260, 1262, 1266, and 1267
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Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery
Pack Operations
System I/O Address |
I/O
Address (Hex) |
System
Function (Shipping Configuration) |
x0000 - x000F |
Direct memory access
controller |
x0020 - x0021 |
Programmable interrupt
controller |
x0022 - x0024 |
Motherboard resources |
x0040 - x0043 |
System timer |
x0060 - x0060 |
Standard 101/102-Key or
Microsoft Natural Keyboard |
x0061 - x0061 |
System speaker |
x0064 - x0064 |
Standard 101/102-Key or
Microsoft Natural Keyboard |
x0070 - x0071 |
System CMOS/real time clock |
x0080 - x0080 |
Motherboard resources |
x0081 - x008F |
Direct memory access
controller |
x0092 - x0092 |
Motherboard resources |
x00A0 - x00A1 |
Programmable interrupt
controller |
x00C0 - x00DF |
Direct memory access
controller |
x00EC - x00EF |
Motherboard resources |
x00F0 - x00FF |
Numeric data processor |
x0170 - x0177 |
Opti Viper Max Dual PCI IDE
Controller |
x0170 - x0177 |
Secondary IDE controller
(dual fifo) |
x01F0 - x01F7 |
Opti Viper Max Dual PCI IDE
Controller |
x01F0 - x01F7 |
Primary IDE controller
(dual fifo) |
x0220 - x022F |
ES1869 Plug and Play
AudioDrive |
x02F8 - x02FF |
Compaq Presario 56K-DF |
x0330 - x0331 |
ES1869 Plug and Play
AudioDrive |
x0370 - x0371 |
Motherboard resources |
x0376 - x0376 |
Opti Viper Max Dual PCI IDE
Controller |
x0376 - x0376 |
Secondary IDE controller
(dual fifo) |
x0378 - x037F |
Printer Port (LPT1) |
x0388 - x038B |
ES1869 Plug and Play
AudioDrive |
x03B0 - x03BB |
NeoMagic MagicGraph 128XD |
x03C0 - x03DF |
NeoMagic MagicGraph 128XD |
x03F0 - x03F5 |
Standard Floppy Disk
Controller |
x03F6 - x03F6 |
Opti Viper Max Dual PCI IDE
Controller |
x03F6 - x03F6 |
Primary IDE controller
(dual fifo) |
x03F7 - x03F7 |
Standard Floppy Disk
Controller |
x03F8 - x03FF |
Communications Port (COM1) |
x040B - x040B |
Motherboard resources |
x0480 - x048F |
Motherboard resources |
x04D6 - x04D6 |
Motherboard resources |
Return to the index list of Specifications.
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Revised: 25 February 1999
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