Appendix D I/O Map

Address (hex)

0000 - 000F

0020 - 0021

002E - 002F

0040 - 0043

0048 - 004B

0060

0061

0064 0070, bit 7 0070, bits 6:0 0071 0078 0079

0080 - 008F

00A0 - 00A1

00C0 - 00DE

00F0

0170 - 0177

01F0 - 01F7

0200 - 0207

0220 - 022F

0278 - 027B

02F8 - 02FF

0330 - 0331

0376

0377

0378 - 037F

Size

16bytes

2bytes

2bytes

4bytes

4bytes

1byte

1byte

1byte

1bit

7bits

1byte

1byte

1byte

16bytes

2bytes

31bytes

1byte

8bytes

8bytes

8bytes

8bytes

4bytes

8bytes

1bytes

1byte

1byte

8bytes

Description

PIIX - DMA 1

PIIX - Interrupt

Ultra I/O configuration PIIX - Timer 1

PIIX - Timer 2 Keyboard Controller PIIX - NMI, speaker Kbd Controller, PIIX - Enable NMI PIIX - Real Time PIIX - Real Time Reserved - Brd. Reserved - Brd. PIIX - DMA Page PIIX - Interrupt PIIX - DMA 2 Reset Numeric Error Secondary IDE Primary IDE Channel Game Port

Parallel Port 2

On-Board Serial Port 2

MPU - 401 (MIDI)

Sec IDE Chan Cmd

Sec IDE Chan Stat

Parallel Port 1

Address (hex)

0388 - 038B

03B4 - 03B5 03BA 03BC - 03BF 03C0 - 03CA 03CC 03CE - 03CF 03D4 - 03D5 03DA

03E8 - 03EF

03F0 - 03F5

03F6

03F7 (Write) 03F7, bit 7 03F7, bits 6:0 03F8 - 03FF LPT + 400h 04D0 - 04D1 0608 - 060B 0CF8* 0CF9 0CFC-0CFF 0FF0 - 0FF7 FF00 - FF07 FFA0 - FFA7 FFA8 - FFAF

Size

4bytes

2bytes

1byte

4bytes

12bytes

1byte

2bytes

2bytes

1byte

8bytes

6bytes

1byte

1byte

1bit

7bits

8bytes

8bytes

2bytes

4bytes

4bytes

1byte

4bytes

8bytes

8bytes

8bytes

8bytes

Description

Parallel Port 3

Serial Port 3

Floppy Channel

Pri IDE Chan

Floppy Chan 1

Floppy Disk

Pri IDE Chan

On-Board Serial

ECP port, LPT

Edge/Level

PCI Config

Turbo & Reset

PCI Config Data

IDE Bus Master IDE primary IDE secondary

Table D-1. Advanced/RH I/O Address Map

I/O Port 78 is reserved for BIOS use. Port 79 is a read only port, the bit definitions are shown below in Table D-2.

Bit #

0

1

2

3

4

5

6

7

Description

Reserved

Soft Off capable power supply present

Onboard Audio present

External CPU clock External CPU clock Setup Disable Clear CMOS Password Clear

Bit = 1

n/a No Yes Table B-2 Table B-2

Enable access

Keep values Keep password

Bit = 0

n/a Yes No Table B-2 Table B-2

Disable access

Clear values

Clear password

Table D-2. Advanced/RH Port 79 Definition

Advanced/RH Technical Product Specification Page 29

Page 29
Image 29
Intel 281809-003 manual Appendix D − I/O Map, Address hex, Piix DMA, Bit # Description, Bit =

281809-003 specifications

The Intel 281809-003 is a notable memory module developed by Intel, showcasing advanced features and technologies that cater to a variety of computing applications. As part of Intel's extensive range of semiconductor products, the 281809-003 exemplifies the company’s commitment to enhancing data storage and retrieval processes.

One of the key features of the Intel 281809-003 is its capacity, designed to support a significant amount of data for efficient computing tasks. The module delivers robust performance, with increased speed and reliability that meet the demands of modern computing environments. This memory module provides enhanced data transfer rates that facilitate quick access to frequently utilized data, reducing latency and improving overall system responsiveness.

The Intel 281809-003 utilizes dynamic random access memory (DRAM) technology, which is fundamental to its operation. DRAM is known for its ability to hold data temporarily while the device is powered on, making it ideal for applications that require rapid data processing, such as gaming, content creation, and complex simulations. The efficiency of the DRAM technology also plays a pivotal role in optimizing energy consumption, thus contributing to better performance-to-power ratios.

In terms of architecture, the Intel 281809-003 is built to integrate seamlessly with Intel platforms, ensuring compatibility and optimized performance with Intel's processors. The module employs advanced error-correcting code (ECC) technology, which helps detect and correct common types of data corruption, enhancing data integrity and system stability. This feature is particularly important for mission-critical applications where data consistency is crucial.

The Intel 281809-003 also offers scalability options, making it a suitable choice for a range of systems from entry-level desktops to high-performance servers. This versatility allows for easy upgrades, accommodating evolving user needs and technological advancements without requiring complete system overhauls.

Another significant characteristic of the Intel 281809-003 is its adherence to industry standards, including JEDEC specifications, which ensures that the module is reliable and widely supported across various hardware configurations. Additionally, its design includes considerations for heat dissipation, enhancing longevity and performance during extended use.

In summary, the Intel 281809-003 memory module stands out due to its impressive capacity, speed, ECC technology, and compatibility with Intel's ecosystems. By integrating advanced DRAM technologies and adhering to rigorous industry standards, the Intel 281809-003 represents a key component for users seeking reliable and efficient memory solutions in their computing endeavors.