ADLINK NuPRO-842 Pentium 4 Industrial Motherboard Deployment and Debugging Guide

ADLINK NuPRO-842 Pentium 4 Industrial Motherboard Deployment and Debugging Guide

In industrial automation, telecommunications infrastructure, and traditional embedded systems, the PICMG 1.0 platform is still in service in many critical applications due to its mature PCI/ISA bus expansion capabilities and long lifecycle support. The NuPRO-842 launched by ADLINK is a full-size PICMG 1.0 single board computer equipped with Intel ®  Pentium ®  4 or mobile version Pentium 4-M processor, paired with Intel ®  The 845GV chipset provides up to 2GB DDR memory, dual Gigabit Ethernet, USB 2.0, and onboard integrated graphics card, and supports DVI/LVDS/TTL digital display output through optional daughter card DB-842DVI. This board is particularly suitable for industrial sites that require moderate computing performance and compatibility with traditional ISA expansion cards. This article will provide a detailed technical reference for system integration engineers from the aspects of hardware architecture, interface definition, jumper configuration, installation steps, BIOS settings, driver deployment, watchdog timer, and display expansion.

Product positioning and technical specifications overview

The NuPRO-842 follows the PICMG 1.0 Rev 1.0 (PCI/ISA) specification, with a board size of 388mm × 122mm (full-size), supporting a single mPGA478 packaged Pentium 4 or low-power mobile Pentium 4-M processor, and a front-end bus (FSB) supporting 400/533MHz (can be detected through jumper or automatic). The chipset is manufactured by Intel ®  Composed of 845GV Graphics Memory Control Center (GMCH) and 82801DB I/O Control Center (ICH4), it provides a 32-bit/33MHz PCI bus and ISA bus (via IT8888 PCI to ISA bridge).

Core specifications:

Memory: 2 184 pin DIMM slots, supporting non ECC, non registered DDR 266 (PC2100) SDRAM, with a maximum capacity of 2GB (requiring paired installation of modules of the same density).

Network: Dual Intel ®  82540EM Gigabit Ethernet Controller (PCI bus), supporting 10/100/1000Base-T adaptation.

Display: Integrated Intel ®  Extreme Graphics (built-in 845GV), supports analog VGA output, with a maximum resolution of 2048 × 1536@60Hz The maximum dynamic video memory allocation (DVMT) is 64MB (when the system memory is ≥ 256MB).

Storage: Dual channel Ultra ATA -100 IDE controller (primary/secondary), supporting four IDE devices.

I/O interfaces: two RS-232 serial ports (COM1/COM2, COM2 can be configured as RS-422/485 via jumper), one IEEE-1284 parallel port, six USB 2.0 ports (1 panel, 5 pin headers), PS/2 keyboard/mouse, floppy drive interface, AC'97 audio interface (requires daughter card), infrared interface (IrDA).

Expansion: Mini PCI socket (supporting wireless or VGA daughter cards), ISA bus (via backplane).

Monitoring: Winbond W83627HF Super I/O provides hardware monitoring (temperature, voltage, fan speed) and programmable watchdog timer (1-255 seconds/minute).

This board supports mainstream operating systems such as Windows 2000/XP and Linux, and is compatible with PCIe network boot.

Detailed explanation of board layout and connectors

1. Distribution of main connectors (refer to manual diagram)

The key connectors on the board include (see manual diagram for location):

CPU: MPGA478 socket (with locking rod).

Memory: DIMM1/DIMM2 (two 184 pin slots, preferably paired with DIMM1 and DIMM2).

IDE：CN14（Primary）、CN13（Secondary）， All are 40 pin standard interfaces (note manual errata, old version labels are reversed).

FDD: CN12 (34 pin floppy drive interface).

Serial ports: CN11 (COM1), CN10 (COM2), both with 2 × 5 rows of pins (requiring a bracket).

Parallel port: CN7 (26 pin pin, requires bracket).

VGA: CN3 (DB-15 panel straight out).

Dual network ports: CN5 (LAN1), CN6 (LAN2), RJ-45 with speed/link LED.

USB: The panel has one USB port (CN9), two USB pins (CN16, CN18), and one external USB pin (JP5), for a total of six ports.

PS/2 keyboard/mouse: CN1 (PS/2 circular DIN, can be connected to both keyboard and mouse through Y line).

Front panel: CN13 (2 × 10 pin rows, including power LED, HDD LED, reset/power button, speaker, WDT LED, ATX power control signal).

Fan: CPU fan socket (FN1, near the CPU).

ATX power supply: CN23 (standard ATX 20 pin power connector) and CPU specific 12V power supply (CN21, 4 pin).

Mini PCI: CN19 (124 pin socket).

AC'97 audio: CN8 (10 pin pin, requires audio frequency sub card).

Infrared interface: CN4 (IrDA).

Thermistor: CN17 (external temperature sensor).

2. Key points of key signal pins

COM1/COM2: Standard 9-pin RS-232 signal (DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI), default COM1=3F8h/IRQ4, COM2=2F8h/IRQ3. COM2 can be switched to RS-422/485 mode through jumper wires.

Parallel port: Supports SPP/EPP/ECP, default LPT1=378h/IRQ7.

Front panel pin arrangement: includes PWRON (power on), PWRBT (power button), RESETBT, PLED, HDDLED, SPKR (speaker), WDTLED, and 5VSB, etc.

USB 2.0: Each port can provide 5V@0.5A Equipped with overcurrent protection.

Gigabit Ethernet port: RJ-45 contains LED - green LED indicates 1000M (on) or 100M (off), yellow LED indicates link/activity.

Detailed explanation of jumper configuration

There are multiple sets of jumpers on the board for configuring FSB frequency, COM2 working mode, clearing CMOS, etc.

1. Clear CMOS (JP6)

Normal mode: Short circuit 1-2 (default).

Clear CMOS: Short circuit for 2-3 seconds, then restore 1-2 to clear RTC data and password.

2. FSB frequency selection (JP8)

Auto (1-2): Automatically detects FSB (400 or 533MHz).

400 MHz (2-3): Mandatory 400 MHz.

NC (blank connection): Reserved.

3. COM2 function selection (JP1, JP2, JP3)

By combining three sets of jumper wires, COM2 can be set to RS-232, RS-422, or RS-485:

RS-232: JP1 1-2&4-5, JP2 1-2, JP3 1-2 (see Table 2-21 in the manual for specific combinations).

RS‑422：JP1 2‑3 & 5‑6，JP2 3‑4，JP3 3‑4。

RS‑485：JP1 2‑3 & 5‑6，JP2 5‑6，JP3 5‑6。

4. COM2 mode selection (JP4)

RS-422/RS-485 (1-2&4-5): Half duplex or full duplex.

RS-485+(2-3&5-6): RS-485 with bias.

5. Other jumpers

The board has no other configuration jumpers, Mini PCI and AC'97 do not require jumpers.

Hardware installation steps

1. CPU installation

Lift the socket locking rod, align the pin 1 triangle mark of the CPU with the socket triangle mark, gently insert it, and press down the locking rod until it is locked.

Apply thermal grease, install heat sink and fan (connected to CPU fan socket FN1).

Attention: If using the mobile version of Pentium 4-M (low-power), ensure that the heat sink is compatible.

2. Memory installation

Must be installed in pairs, with two identical capacities and densities.

If only one pair is inserted, priority should be given to using DIMM1 and DIMM2.

When installing, insert the DIMM vertically into the slot, align the foolproof notch, and press it in until the two side buckles are locked.

3. IDE device connection

Connect the hard drive or optical drive using an ATA-100 ribbon cable, paying attention to the master/slave jumper settings.

Onboard two IDE interfaces (CN14 main and CN13 secondary), each supporting two devices.

4. Front panel and power connection

Connect the PWRON and PWRBT on CN13 to the backplane or chassis power switch, and 5VSB needs to be connected to achieve ATX soft switching.

Be sure to connect the CPU auxiliary power supply (CN21, 4-pin 12V) to ensure sufficient power supply to the CPU.

5. Peripheral cable connection

Serial ports, parallel ports, and USB pins need to be connected to the chassis panel using the accompanying bracket cable.

BIOS Setting Points

BIOS is based on Award/Phoenix, press<Del>to enter when booting up. The key configuration items include:

Standard CMOS: Set date/time, automatically detect IDE hard drive.

Advanced BIOS features: Set boot sequence (hard drive, CDROM, USB, LAN), enable/disable fast self-test, set security password, console redirection (serial port remote display POST).

Advanced chipset: System/Video BIOS Cacheable and DVMT video memory allocation (maximum 64MB) can be set.

Integrated peripherals: Enable/disable IDE channel, USB controller, onboard network card (LAN Boot ROM for PXE), serial port address/IRQ (COM1/COM2 default), parallel port mode.

PnP/PCI configuration: IRQ can be manually assigned or automatically managed by ESCD.

Frequency/voltage control: Spread Spectrum can be enabled/disabled to reduce EMI.

Load Fail Safe default value: Restore basic configuration when the system fails to start.

Password setting: Supports administrator and user passwords, can be removed by clearing CMOS.

Driver installation process (Windows 2000/XP)

Suggest installing in order:

Chipset driver (Intel 845GV): Run  CHIPDRV  Chipset  1845GV  Setup. exe from the CD and restart.

VGA driver (integrated graphics card): Run  HIPDRV  VGA  845GV  win2k_xp131.exe (select the corresponding version according to the OS), restart.

Network card driver (Intel 82540EM): Run  HIPDRV  LAN  82540EM  pro2kppm.exe (Win2000/XP), click "Install Now", and restart.

The watchdog example code can be found in  HIPDRV  WDT  DOS  NP842 for reference.

For Windows 98/ME/NT, please use the driver files in the corresponding directory (such as win9x131.exe, winnt4131.exe, etc.).

Principle and use of watchdog timer (WDT)

The WDT of NuPRO-842 is implemented through programmable logic devices and controlled through Winbond Super I/O registers and dedicated I/O ports (02Eh/02Fh). Main features:

Timeout period: 1-255 seconds or 1-255 minutes;

Enable, refresh, and disable software;

Generate hardware reset (hard reset) after timeout.

Operation steps (refer to example code):

Enter the Super I/O configuration space (write key sequences such as 0x87).

Select logical device 8 (WDT).

Set timeout values and enable bits in the control/status registers (CRF5, CRF7).

To start WDT, the application needs to periodically 'feed the dog' (write refresh command).

If the timeout does not refresh, the system will automatically reset.

This function is suitable for unmanned systems to prevent software deadlocks from causing downtime.

DB-842DVI Display Subcard Expansion

NuPRO-842 can achieve DVI, LVDS or TTL digital display output through optional daughter card DB-842DVI, supporting 800 × 600 and 1024 × 768@60Hz .

Subcard jumper:

JP1: Select the panel voltage (+5V or+3.3V) and adjust it according to the display screen specifications.

JP2: Enable/disable LVDS output (1-2 enabled, 2-3 disabled).

Main connectors:

CN1: DVI interface (24 pins, standard TMDS signal).

CN2: LVDS interface (20 pins, supports single channel LVDS).

TTL interface: 44 pin pin header, providing RGB 24 bit data, clock, and synchronization signals.

When in use, insert the daughter card into the onboard CN15 interface (DVI dedicated connector), configure jumpers according to the monitor type, and select the appropriate display output in BIOS (the integrated graphics card needs to be set as the main display).

Common troubleshooting and engineering recommendations

Possible causes and solutions for the fault phenomenon

No display on power, CPU not installed or poor heat dissipation; The memory is not properly plugged in. Check if the CPU and memory are installed properly, and if the fan is running

Unable to recognize paired installation of memory or two different capacities using two memories of the same capacity and model, priority given to DIMM1/2

COM2 communication abnormal jumper settings do not match external devices. Adjust JP1-JP4 according to device standards (232/422/485)

Rear USB does not recognize USB port not enabled or driver not installed. Enable USB in BIOS and install chipset driver

Network failure, network card driver not installed or MAC conflict, Intel 82540EM driver installed, check LAN enabled in BIOS

Check the WDT related options in the BIOS if the watchdog fails to trigger WDT or if the timeout value is set improperly, and confirm that the application feeds the watchdog

System overheating, shutdown, insufficient heat dissipation, or fan failure. Check CPU fan and increase chassis ventilation

BIOS settings cannot save CMOS battery failure, replace CR2032 battery

Use DB-842DVI to check JP1/JP2 for incorrect display jumper voltage or enable settings, and confirm that the panel voltage matches

Environmental requirements: The working temperature should be between 5 ℃ and 55 ℃, and the air circulation inside the chassis should be ensured. Due to the use of Pentium 4 processor, the power consumption is relatively high (typically 60W+), and the power supply needs to provide sufficient+5V and+12V current.