System I/O address specifications

I/O address (hex)

System function (shipping configuration)

 

 

 

000

- 00F

DMA controller no. 1

 

 

 

010

- 01F

Unused

 

 

 

020

- 021

Interrupt controller no. 1

 

 

 

022

- 024

Opti chipset configuration registers

 

 

 

025

- 03F

Unused

 

 

02E - 02F

87334 “Super I/O” configuration for CPU

 

 

 

040

- 05F

Counter/timer registers

 

 

 

044

- 05F

Unused

 

 

 

060

 

Keyboard controller

 

 

 

061

 

Port B

 

 

 

062

- 063

Unused

 

 

 

064

 

Keyboard controller

 

 

 

065

- 06F

Unused

 

 

 

070

- 071

NMI enable/RTC

 

 

 

072

- 07F

Unused

 

 

 

080

- 08F

DMA page registers

 

 

 

090

- 091

Unused

 

 

 

092

 

Port A

 

 

 

093

- 09F

Unused

 

 

0A0 - 0A1

Interrupt controller no. 2

 

 

I/O Address (hex)

System function (shipping configuration)

 

 

0A2 - 0BF

Unused

 

 

0C0 - 0DF

DMA controller no. 2

 

 

0E0 - 0EF

Unused

 

 

0F0 - 0F1

Coprocessor busy clear/reset

 

 

0F2 - 0FF

Unused

 

 

 

100

- 16F

Unused

 

 

 

170

- 177

Secondary fixed disk controller

 

 

 

178

- 1EF

Unused

 

 

1F0 - 1F7

Primary fixed disk controller

 

 

1F8 - 200

Unused

 

 

 

201

 

JoyStick (decoded in ESS1688)

 

 

 

202

- 21F

Unused

 

 

 

94 Chapter 6 Specifications

Page 102
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HP C727US, C721TU, C725BR, C718TU, C700 System I/O address specifications, Address hex System function shipping configuration

C758LA, C731XX, C707LA, C768LA, C730T specifications

HP has long been recognized as a pioneer in the realm of technological innovation, and the various models within the HP series, including the C768TU, C760T, C735TU, C776TU, and C777CL, exemplify this legacy. Each of these laptops offers a unique blend of features and technologies, tailored to meet the diverse needs of users, whether they are students, professionals, or casual users.

The HP C768TU stands out with its sleek design and lightweight frame, making it highly portable for those on the go. It is equipped with an Intel processor, which provides reliable performance for everyday computing tasks, while the vibrant display delivers clear visuals, making it ideal for multimedia consumption.

On the other hand, the HP C760T is designed with a focus on enhanced security features. It includes HP’s Secure Boot technology, which helps protect the system against malware at the startup level. This model also boasts an impressive battery life, ensuring that users can work for extended periods without needing to recharge frequently.

The HP C735TU is tailored for users who need a balance of power and efficiency. Its energy-efficient processor allows for longer battery life while maintaining robust performance for multitasking and running more demanding applications. Additionally, its high-definition display ensures that every image and video appears crisp and clear.

Meanwhile, the HP C776TU is designed with a focus on connectivity. It comes with multiple USB ports, an HDMI output, and wireless technology that facilitates quick and easy connections to other devices. This model is especially beneficial for users who engage in collaborative work and require seamless file sharing.

Lastly, the HP C777CL offers a premium experience with its superior build quality and enhanced performance capabilities. It features a high-resolution display that is perfect for creative professionals, alongside enhanced audio technology that delivers exceptional sound quality for video conferencing and entertainment purposes.

All five models feature HP’s signature durability, ensuring that they can withstand the wear and tear of daily use. With a range of configurations and designs, the HP C768TU, C760T, C735TU, C776TU, and C777CL provide users with options that cater to their specific needs, making HP a versatile choice in today’s competitive laptop market. Whether for work, study, or leisure, these models embody the commitment to quality and innovation that HP is known for.