Specifications

System I/O address specifications

I/O address (hex)

System function (shipping configuration)

 

 

000–01F

DMA controller

 

 

020–021

Program interrupt controller

 

 

024–025

Program interrupt controller

 

 

028–029

Program interrupt controller

 

 

02C–03D

Program interrupt controller

 

 

02E–02F

Motherboard resources

 

 

030–031

Program interrupt controller

 

 

034–035

Program interrupt controller

 

 

038–039

Program interrupt controller

 

 

03C–03D

Program interrupt controller

 

 

040–043

System timer

 

 

04E–04F

Motherboard resources

 

 

050–053

System timer

 

 

060

Standard 101-/102-key or Microsoft natural keyboard

 

 

061

Motherboard resources

 

 

062

Microsoft ACPI-compliant embedded controller

 

 

063

Motherboard resources

 

 

064

Standard 101-/102-key or Microsoft natural keyboard

 

 

065

Motherboard resources

 

 

066

Microsoft ACPI-compliant embedded controller

 

 

067

Motherboard resources

 

 

070

Motherboard resources

 

 

071–077

System CMOS/real-time clock

 

 

080

Motherboard resources

 

 

081–091

Direct memory access controller

 

 

092

Motherboard resources

 

 

093–09F

Direct memory access controller

 

 

0A0–0A1

Program interrupt controller

 

 

0A4–0A5

Program interrupt controller

 

 

0A8–0A9

Program interrupt controller

 

 

0AC–0AD

Program interrupt controller

 

 

0B0–0B1

Program interrupt controller

 

 

0B2–0B3

Motherboard resources

 

 

0B4–0B5

Program interrupt controller

 

 

0B8–0B9

Program interrupt controller

 

 

0BC–0BD

Program interrupt controller

(Continued)

6–8

Maintenance and Service Guide