System Support

 

 

 

Table 4-8

 

System I/O Map

 

 

I/O Port

Function

0000..001Fh

DMA Controller 1

 

 

0020..002Dh

Interrupt Controller 1

 

 

002E, 002Fh

Index, Data Ports to SIO Controller (primary)

 

 

0030..003Dh

Interrupt Controller

 

 

0040..0042h

Timer 1

 

 

004E, 004Fh

Index, Data Ports to SIO Controller (secondary)

 

 

0050..0052h

Timer / Counter

 

 

0060..0067h

Microcontroller, NMI Controller (alternating addresses)

 

 

0070..0077h

RTC Controller

 

 

0080..0091h

DMA Controller

 

 

0092h

Port A, Fast A20/Reset Generator

 

 

0093..009Fh

DMA Controller

 

 

00A0..00B1h

Interrupt Controller 2

 

 

00B2h, 00B3h

APM Control/Status Ports

 

 

00B4..00BDh

Interrupt Controller

 

 

00C0..00DFh

DMA Controller 2

 

 

00F0h

Coprocessor error register

 

 

0170..0177h

IDE Controller 2 (active only if standard I/O space is enabled for secondary controller)

 

 

01F0..01F7h

IDE Controller 1 (active only if standard I/O space is enabled for primary controller)

 

 

0278..027Fh

Parallel Port (LPT2)

 

 

02E8..02EFh

Serial Port (COM4)

 

 

02F8..02FFh

Serial Port (COM2)

 

 

0370..0377h

Diskette Drive Controller Secondary Address

 

 

0376h

IDE Controller 2 (active only if standard I/O space is enabled for primary drive)

 

 

0378..037Fh

Parallel Port (LPT1)

 

 

03B0..03DFh

Graphics Controller

 

 

03BC..03BEh

Parallel Port (LPT3)

 

 

03E8..03EFh

Serial Port (COM3)

 

 

03F0..03F5h

Diskette Drive Controller Primary Addresses

 

 

03F6h

IDE Controller 1 (active only if standard I/O space is enabled for sec. drive)

 

 

03F8..03FFh

Serial Port (COM1)

 

 

04D0, 04D1h

Interrupt Controller

 

 

0678..067Fh

Parallel Port (LPT2)

 

 

0778..077Fh

Parallel Port (LPT1)

 

 

07BC..07BEh

Parallel Port (LPT3)

 

 

0CF8h

PCI Configuration Address (dword access only )

 

 

0CF9h

Reset Control Register

 

 

0CFCh

PCI Configuration Data (byte, word, or dword access)

NOTE:

Assume unmarked gaps are unused, reserved, or used by functions that employ variable I/O address mapping. Some ranges may include reserved addresses.

 

4-14

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Technical Reference Guide

Page 48
Image 48
HP dc5850 manual System I/O Map, Port Function

dc5850 specifications

The HP dc5850 is a desktop computer that was designed for business environments, offering a blend of performance, reliability, and efficiency. Released during the height of the mid-2000s, this system is powered by AMD processors, particularly the Athlon or Phenom series, which ensures that it can handle various computational tasks with ease.

The dc5850 features a compact chassis that adheres to the Microtower form factor. This design not only saves space but also allows for easier upgrades and maintenance. The unit typically supports a range of RAM configurations, with options for up to 8GB of DDR2 memory. This flexibility enables the user to tailor the system's performance according to their needs, whether for basic office tasks or more demanding applications.

Storage options on the HP dc5850 include a 3.5-inch HDD that can accommodate substantial data, with capacities typically ranging from 160GB to 1TB. The inclusion of a SATA interface ensures fast data transfer rates, which is essential for improving overall system performance. Moreover, the dc5850 boasts multiple USB ports, including USB 2.0 and sometimes even USB 3.0, facilitating easy connectivity with peripherals such as printers, scanners, and external drives.

Graphics capabilities on the dc5850 are generally provided by integrated solutions, although users have the option to add discrete graphics cards for enhanced performance in visual tasks. The system often comes with integrated audio, which supports basic multimedia needs without requiring additional sound cards.

In terms of connectivity, the HP dc5850 features built-in Ethernet for wired networking and may also offer options for Wi-Fi capabilities via PCI expansion slots. This makes it suitable for networked business environments, enabling seamless integration into office infrastructures.

The system is designed with energy efficiency in mind, complying with various environmental standards, thereby reducing its carbon footprint. This aspect may also lead to lower operational costs for businesses focused on sustainability.

Overall, the HP dc5850 stands out as a versatile desktop solution, catering to the essential needs of small to medium-sized businesses. With its combination of performance, expandability, and energy efficiency, it remains a noteworthy choice for users seeking reliable computing power in a compact and manageable form.