ADLINK NuPRO-E340 Industrial Motherboard Debugging and BIOS Optimization Guide

4. Power connection

The 4-pin+12V interface of CN24 must be connected, otherwise the motherboard cannot start. If the power supply only has a large 4-pin, ADLINK adapter cable (P/N 30-00006-0000) can be used. At the same time, the ATX power control signals (PSON #, 5VSB) and power button (PWRBT #) in CN23 need to be correctly connected to the backplane to achieve ATX soft power on/off.

Jumper configuration and special functions

Default Status Description of Jumper Number Function

JBAT1 Clear CMOS 1-2 (Normal) After power failure, short circuit 2-3 for about 5 seconds to clear NVRAM

The selection of JP1-4 COM1 mode is shown in the manual table, and is set to RS-232, RS-422, RS-485, or RS-485+(full duplex) through four sets of jumper combinations. For specific combinations, please refer to Section 2.4

COM1 mode switching detailed combination (excerpted from the manual):

RS-232: JP1 1-2, JP2 1-3&2-4, JP3 1-3&2-4, JP4 not connected (or according to the table);

RS‑422：JP1 3‑4，JP2 3‑5&4‑6，JP3 3‑5&4‑6，JP4 1‑3&2‑4；

RS‑485：JP1 5‑6，JP2 3‑5&4‑6，JP3 3‑5&4‑6，JP4 1‑3&2‑4；

RS-485+: JP1 5-6, JP2 3-5&4-6, JP3 3-5&4-6, JP4 3-5&4-6 (note that the difference from standard RS-485 lies in JP4).

Be sure to ensure that the jumper settings are consistent with the external device level standards, otherwise it may cause communication abnormalities or damage to the port.

Essentials of System Resources and Interrupt Routing

For complex systems that require multiple expansion cards, it is crucial to allocate IRQ reasonably and avoid conflicts.

System memory mapping: 640KB~768KB is for video buffer, 768KB~896KB is for PCI expansion ROM (including VGA BIOS and LAN PXE ROM), and 1MB or more is for system BIOS and APIC space.

DMA channels: channels 0/1/3 are reserved for parallel ports (LPT), channel 2 is a floppy drive, channel 4 is cascaded, and channels 5-7 are open.

I/O addresses: Typical allocations include COM1=3F8h (IRQ4), COM2=2F8h (IRQ3), LPT=378h (IRQ7). The SIO (ITE8783) configuration index is located at 2Eh/2Fh or 4Eh/4Fh.

IRQ routing (APIC mode): PCIe root ports and onboard devices (such as 82574L network cards, SATA controllers, USB EHCI) are assigned IRQs 16~23. If inserting a third-party PCI card, be careful to avoid sharing the same PIRQ line with onboard devices. BIOS can manually adjust the mapping from PIRQ to INT A~D (refer to PCI interrupt routing table). For ISA cards, corresponding IRQs need to be reserved in the BIOS to prevent them from being preempted by PCI devices.

Watchdog Timer (WDT) Programming Guide

The watchdog of NuPRO-E340 is controlled by the ITE8783 Super I/O chip and can be programmed through the I/O port. The official provides C language sample code based on DOS/Windows (see Appendix A.1). The core operations include:

Enter configuration mode: Write a specific key sequence (0x87, 0x01, 0x55, 0x55, or 0xAA) to 2Eh (or 4Eh);

Select logical device 7 (WDT device);

Set the counting unit and value: select seconds or minutes in register 0x71, and write timeout values (1-255) in register 0x73;

Enable WDT output: trigger system reset through KBRST signal;

Exit configuration mode: Write 0x02 to 2Eh and 0x02 to 2Fh.

Example code snippet:

outportb(0x2E, 0x87);  outportb(0x2E, 0x01);  outportb(0x2E, 0x55);  outportb(0x2E, 0x55); //Enter

outportb(0x2E, 0x07);  outportb(0x2F, 0x07); //Select device 7

outportb(0x2E, 0x71);  outportb(0x2F, 0x60); //Set seconds to enable keyboard/mouse interrupt

outportb(0x2E, 0x73);  outportb(0x2F, count); //Write timeout value

outportb(0x2E, 0x02);  outportb(0x2F, 0x02); //Exit

Under the operating system, it is necessary to write driver programs or use SEMA interfaces (if provided) to simplify operations. For Windows, ADLINK provides driver support, and the application layer can be refreshed through APIs.

Driver installation and special precautions

The accompanying DVD provides Windows XP/7 (32/64 bit) and Linux drivers. Suggested installation sequence:

Chipset driver (Intel INF Update);

Display driver (requires installation of. NET Framework 3.5 SP1 first);

Network driver (Intel 82579LM/82574L);

Intel Rapid Storage Technology (if using RAID/AHCI, drivers need to be preloaded through F6 during OS installation);

USB 3.0 driver (required only for Windows, included with Linux kernel 2.6.31+);

AMT drive (ME_SW);

TPM driver (if equipped);

Audio driver (only when using DB-Audio2 daughter card).

Key Reminder:

The USB 3.0 port cannot be used for installing the operating system as the installation program does not have built-in drivers. Please use a USB 2.0 port or optical drive.

If RAID or AHCI is enabled, be sure to prepare an F6 floppy disk image before installing Windows, otherwise the system will not recognize the hard disk.

Linux distributions such as Fedora 14 and RHEL 5 have good support for Q67 chipset and USB 3.0, but it is still recommended to install official network card drivers to obtain AMT functionality.

Typical troubleshooting and optimization suggestions

Possible causes and solutions for the phenomenon

No display when powered on, CPU power supply not connected/poor memory contact. Check if CN24 is inserted and re plug and unplug the memory