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United States April 15, 1999
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Maintenance & Service Guide
Presario 1900 Series
Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
System I/O Address
I/O Address System Function (Shipping Configuration)
0000 – 000F Direct Memory Access Controller
0020 – 0021 Programmable interrupt controller
0040 – 0043 System timer
0060 – 0060 Standard 101/102-Key or Microsoft Natural Keyboard
0061 – 0061 System speaker
0064 – 0064 Standard 101/102-Key or Microsoft Natural Keyboard
0070 – 0071 System CMOS/real time clock
0081 – 008F Direct memory access controller
00A0 – 00A1 Programmable interrupt controller
00C0 – 00DF Direct memory access controller
00E0 – 00E1 Motherboard Resources
00F0 – 00FF Numeric Data Processor
0170 – 0177 Intel 82371AB/EB PCI Bus Master IDE Controller
01F0 – 01F7 Intel 82371AB/EB PCI Bus Master IDE Controller
0201 – 0201 Gameport Joystick
0274 – 0277 IO read data port for ISA Plug and Play enumerator
0376 – 0376 Intel 82371AB/EB PCI Bus Master IDE Controller
0378 – 037F Printer Port (LPT1)
03B0 – 03BB NeoMagic NMG5 Graphics Controller
03C0 – 03DF NeoMagic NMG5 Graphics Controller
03F0 – 03F5 Standard Floppy Disk Controller
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