Memory and I/O Map

Memory and I/O Map

ÉLANSC520 MEMORY MAPPED CONFIGURATION REGION (MMCR) REGISTERS

Much of the functionality incorporated into the ÉlanSC520 Microcontroller, such as the watchdog timer, CPU speed control, and general-purpose timer, can be controlled and monitored through the Memory Mapped Configuration Region (MMCR) registers. The MMCR registers occupy 4KB of memory space. For convenience, these registers are made available at boot time in the first megabyte of system RAM, at DF000h.

Wherever the MMCR is located, its 4KB footprint will cover and take precedence over the underlying memory space function. For example, when the D0000h page function is set to ISA bus, DF000h through DFFFFh will instead by occupied by the MMCR. For this reason, the maximum BIOS extension size is reduced from 64KB to 60KB.

In the event of an address conflict, the MMCR base address can be moved at any time with an I/O write to the Configuration Base Address Register (CBAR), located at I/O address FFFCh. Refer to the ÉlanSC520 Register Set Manual for further details.

MEMORY MAP

The lower 1 MB memory map of the EPM-4 is arranged as shown in the following table.

 

 

Table 8: Memory Map

 

 

 

Start

End

 

Address

Address

Comment

E0000h

FFFFFh

System BIOS

DF000h

DFFFFh

MMCR Registers (see note)

D0000h

DEFFFh

ISA memory, BIOS extension, or RAM

C0000h

CFFFFh

Reserved for Video BIOS

A0000h

BFFFFh

Reserved for Video RAM

00000h

9FFFFh

System DRAM

Note: Default location. If MMCR is relocated, this memory space is allocated to ISA memory, BIOS extension, or RAM, depending on how the D0000h page function is set in CMOS Setup.

Reference – 36

EPM-4 Reference Manual

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Lynx EPM-4 manual Memory and I/O Map, Memory Map, Start End Address Comment
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EPM-4 specifications

The Lynx EPM-4 is a cutting-edge electronic monitoring device designed for a wide range of applications including transportation, logistics, and outdoor activities. With its sleek design and robust capabilities, the EPM-4 provides users with advanced tracking and monitoring features that enhance efficiency and safety.

One of the standout features of the Lynx EPM-4 is its high-precision GPS tracking technology. This allows for real-time location monitoring, ensuring that users can keep tabs on their assets or personnel at all times. The GPS functionality is complemented by cellular connectivity, enabling seamless communication and data transmission even in remote areas. Whether used in urban settings or off-the-grid locations, the EPM-4 maintains reliability and performance.

Another key characteristic of the Lynx EPM-4 is its user-friendly interface. The device is equipped with a bright LED display that provides instant access to essential information, including speed, distance traveled, and battery status. Its intuitive navigation system ensures that even users with minimal technical expertise can operate the device effectively.

Durability is a fundamental aspect of the Lynx EPM-4 design. Constructed to withstand harsh environmental conditions, it features IP67-rated water and dust resistance. This ensures that the device can perform flawlessly in diverse weather conditions, making it suitable for outdoor enthusiasts and professionals alike.

The EPM-4 also incorporates advanced battery technology, allowing for extended usage time on a single charge. This is particularly advantageous for long-haul trips or field operations where charging facilities may be unavailable. Additionally, the device supports various power management modes that optimize battery life based on usage patterns.

Connectivity options are another highlight of the Lynx EPM-4. It supports Bluetooth and Wi-Fi, enabling quick data transfer to smartphones, tablets, or computers for further analysis. Users can easily share information with team members or stakeholders, enhancing collaboration and decision-making processes.

Lastly, the Lynx EPM-4 features customizable settings, allowing users to tailor the device’s functionality to meet their specific needs. Whether it’s setting geofences, receiving alerts for unusual activity, or customizing data logging intervals, the EPM-4 ensures a personalized experience that maximizes utility.

In conclusion, the Lynx EPM-4 stands out as a premier electronic monitoring solution, combining GPS precision, robust durability, extended battery life, and versatile connectivity. With its advanced features and user-friendly design, it serves a vital role in managing logistics, ensuring safety, and enhancing operational efficiency across various industries.
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