HP Compaq 6820s User Manual

I/O address (hex) System function (shipping configuration)
220 - 22F Entertainment audio
230 - 26D Unused
26E - 26 Unused
278 - 27F Unused
280 - 2AB Unused
2A0 - 2A7 Unused
2A8 - 2E7 Unused
2E8 - 2EF Reserved serial port
2F0 - 2F7 Unused
2F8 - 2FF Infrared port
300 - 31F Unused
320 - 36F Unused
370 - 377 Secondary diskette drive controller
378 - 37F Parallel port (LPT1/default)
380 - 387 Unused
388 - 38B FM synthesizer—OPL3
38C - 3AF Unused
3B0 - 3BB VGA
3BC - 3BF Reserved (parallel port/no EPP support)
3C0 - 3DF VGA
3E0 - 3E1 ExpressCard controller in CPU
3E2 - 3E3 Unused
3E8 - 3EF Internal modem
3F0 - 3F7 “A” diskette controller
3F8 - 3FF Serial port (COM1/default)
CF8 - CFB PCI configuration index register (PCIDIVO-1)
CFC - CFF PCI configuration data register (PCIDIVO-1)
System I/O address specifications 89

HP Compaq 6820s Specifications

General

Processor	Intel Core 2 Duo
Graphics	Intel GMA X3100
RAM	Up to 4 GB DDR2
Battery	6-cell Lithium-Ion
Display Size	17 inches
Battery Life	Up to 3 hours
Processor Speed	2.0 GHz
Display	17-inch
Storage	160 GB
Optical Drive	DVD+/-RW SuperMulti
Operating System	Windows Vista
Connectivity	USB 2.0, VGA
Chipset	Mobile Intel GM965 Express
Networking	10/100/1000 Gigabit Ethernet
Audio	Integrated stereo speakers
Ports	3 x USB 2.0, VGA, microphone in, headphone out
Display Resolution	1440 x 900