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

PC Card 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)

 

 

94 Chapter 6 Specifications

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Compaq V6600, V6500 manual Vga