Chapter 3

 

 

 

Hardware

Table 3-1. Interrupt Channel Assignments (IRQs)

 

 

 

 

 

 

 

 

 

IRQ#

Available

Typical Interrupt Source

Connected to Pin

 

 

0

No

Counter 0

NA

 

 

 

 

 

 

 

 

1

No

Keyboard

NA

 

 

2

No

Cascade Interrupt from Slave PIC

NA

 

 

 

 

 

 

 

 

3

Note 1

Serial Port 2 (COM2) / Generic

IRQ3 via SERIRQ

 

 

 

 

 

 

 

 

4

Note 1

Serial Port 1 (COM1) / Generic

IRQ4 via SERIRQ

 

 

5

Note 2

Parallel Port 2 (LPT2) / Generic

IRQ5 via SERIRQ

 

 

 

 

 

 

 

 

6

Note 1

Floppy Drive Controller / Generic

IRQ6 via SERIRQ

 

 

 

 

 

 

 

 

7

Note 1

Parallel Port 1 (LPT1) / Generic

IRQ7 via SERIRQ

 

 

8

No

Real-time Clock

NA

 

 

 

 

 

 

 

 

9

Note 4

SCI / Generic

IRQ9 via SERIRQ

 

 

 

 

 

 

 

 

10

Note 2, 1

Serial Port 3 (COM3) / Generic

IRQ10 via SERIRQ

 

 

11

Note 2, 1

Serial Port 4 (COM4) / Generic

IRQ11 via SERIRQ

 

 

 

 

 

 

 

 

12

Note 1

PS/2 Mouse / Generic

IRQ12 via SERIRQ

 

 

 

 

 

 

 

 

13

No

Math processor

NA

 

 

14

Note 1, 3

IDE Controller 0 (IDE0) / Generic

IRQ14

 

 

 

 

 

 

 

 

15

Note 1, 3

IDE Controller 1 (IDE1) / Generic

IRQ15

 

 

 

 

 

 

 

Notes: In PIC mode, the PCI bus interrupt lines can be routed to any free IRQ.

1.Default, but can be changed to another interrupt. If disabled in BIOS Setup, the interrupt can be used for another purpose.

2.Function described is available if the baseboard is equipped with the Super I/O controller Winbond (W83627HG). This I/O controller is supported by the XTX 820 Embedded BIOS.

3.If the ATA/IDE configuration is set to enhanced mode in BIOS setup (serial ATA and parallel ATA native mode operation), IRQ14 and 15 are free for PCI/LPC bus.

4.In ACPI mode, IRQ9 is used for the SCI (System Control Interrupt). The SCI can be shared with a PCI interrupt line.

Memory Map

The following table provides the common PC/AT memory allocations. Memory below 000500h is used by the BIOS.

Table 3-2. Memory Map

Address Range

Address Range

(decimal)

(hex)

(TOM-192kB) to TOM

NA

(TOM-8MB-192kB) to

NA

(TOM-192kB)

 

1024 k to (TOM- 8MB

100000 - N.A

-192kB)

 

869 k - 1024 k

E0000 - FFFFF

 

 

800 k - 869 k

CC000 - DFFFF

640 k - 800 k

A0000 - CBFFF

 

 

Size

192 kB

1 or 8 MB

NA

128kB

96kB

160kB

Description

ACPI reclaim, MPS and NVS area **

VGA frame buffer *

Extended memory

Runtime BIOS

Upper memory

Video memory and Video BIOS

XTX 820

Reference Manual

17

Page 23
Image 23
Ampro Corporation XTX 820 Memory Map, Available Typical Interrupt Source Connected to Pin, Address Range Decimal Hex, Size

XTX 820 specifications

Ampro Corporation has made a significant mark in the world of embedded systems with its versatile XTX 820 embedded computing module. The XTX 820 is designed to cater to a wide array of applications, ranging from industrial automation to medical devices, providing developers with a powerful yet compact solution.

One of the standout features of the XTX 820 is its advanced processing capabilities. The module is equipped with an Intel Atom processor, which delivers impressive performance while operating at low power levels. This combination makes the XTX 820 suitable for environments where energy efficiency is essential. The Atom processor allows for seamless multitasking and support for demanding applications without compromising on thermal efficiency.

In terms of memory, the XTX 820 supports a range of configurations, accommodating both DDR2 and DDR3 memory types. With a maximum of up to 4GB of onboard memory, this module ensures that applications can run smoothly and efficiently across various tasks. The flexibility in memory options enables developers to tailor their designs according to specific project needs.

Connectivity is another strong suit of the XTX 820. The module comes with multiple I/O interfaces that enhance its utility in various applications. It features USB, Serial, and Parallel ports, along with support for LVDS display and audio interfaces. This diverse range of connectivity options allows the XTX 820 to integrate easily with a variety of systems and devices, facilitating seamless data transfer and communication.

Security is increasingly critical in embedded systems, and Ampro has integrated robust security features into the XTX 820. This includes support for hardware-based security solutions, which can protect sensitive data and prevent unauthorized access. Such characteristics make the module a suitable choice for industries where data integrity is paramount.

Furthermore, the XTX 820 boasts an impressive range of environmental operating conditions. It is designed to function in extreme temperatures, making it suitable for outdoor and industrial applications where fluctuations in temperature can be a concern.

In conclusion, the Ampro Corporation XTX 820 embedded computing module emerges as a versatile platform that combines performance, memory flexibility, robust connectivity, and enhanced security features. Its design is tailored to meet the demands of various industries, making it a reliable choice for developers looking for advanced embedded solutions.