ADLINK NuPRO-595 Industrial Half length SBC Motherboard Configuration and Maintenance Guide

ADLINK NuPRO-595 Industrial Half length SBC Motherboard Configuration and Maintenance Guide

In the fields of industrial automation, embedded control, and data acquisition, semi long ISA bus single board computers (SBC) serve a large number of existing systems for a long time due to their compact size, good ISA expansion compatibility, and support for traditional I/O devices. The NuPRO-595 series launched by ADLINK is a typical representative in this field - based on the Intel 430TX chipset, supporting Socket7 processors (including Intel Pentium MMX, AMD K6-2/K6-3, and Cyrix MII), and integrating VGA/LCD display, 10/100Mbps Ethernet, hardware monitoring, and programmable watchdog timer, providing a robust computing platform for industrial sites that require high reliability.

Although this series of products is no longer mainstream, there are still a large number of service equipment in many production lines, military equipment, and traffic control systems. Mastering their hardware configuration, jumper settings, BIOS tuning, and peripheral driver installation details is of practical significance for system maintenance and upgrades. This article is based on the official user manual, systematically reviewing the technical specifications, installation steps, key jumpers, watchdog programming, hardware monitoring applications, and common troubleshooting methods of NuPRO-595 (and its series NuPRO-596), aiming to provide on-site engineers with an operational technical reference.

Comparison of product series and models

The NuPRO-595 series consists of two main models: NuPRO-595 and NuPRO-596, which share the same PCB layout and most of the interfaces, with the main difference being network functionality:

Project NuPRO-595 NuPRO-596

The processor supports Socket7 (Intel Pentium MMX, AMD K6-2/K6-3, Cyrix MII) on the same left side

Chipset Intel 430TX Same as Left

L2 Cache 512 KB Same as Left

Maximum SDRAM 128 MB (1 × 168 pin DIMM) same as left

Display chip C&T 69000 (CRT/LCD) on the same left

Watchdog 0~255 seconds or minutes programmable, same as left

Ethernet Integrated Intel 82559 10/100Mbps None

Hardware Monitoring Winbond W83781D Same as Left

Size 185mm × 122mm same as left

NuPRO-595 is more suitable for industrial nodes that require network communication due to its integrated network card; NuPRO-596 is suitable for pure ISA/PCI control and network free applications, and the two are highly compatible in terms of jumpers and drivers.

Core hardware architecture

1. Processor and bus

Onboard Socket 7 socket, supporting processors with 66 MHz external frequency, including Intel Pentium MMX (166-233 MHz), AMD K6-2/K6-3 (166-400 MHz), and Cyrix MII (133-233 MHz). Users can choose the appropriate CPU based on application performance requirements and power budget, but they need to pay attention to heat dissipation - the official requirement is that the CPU heat sink should be in full contact with the CPU surface, otherwise it may cause system crashes or instability.

2. Chipset and Memory

Using Intel 430TX chipset (including 82430TX and 82371EB), providing support for SDRAM. A single 168 pin DIMM slot with a maximum capacity of 128 MB, supporting PC66/PC100 SDRAM. For DOS or lightweight embedded operating systems, this capacity is sufficient to run most traditional control programs.

3. Display and Storage

Display: Chips&Technologies 69000 graphics chip, built-in 2 MB SDRAM memory, supports simultaneous output of CRT and LCD, with a maximum CRT resolution of 1280 × 1024@8bpp , and supports multiple TFT/DSTN panels (panel types can be selected in BIOS).

IDE: Single channel Enhanced IDE, supports PIO Mode 3/4 and Ultra DMA/33, can connect two devices (hard drive, optical drive, LS-120, etc.).

FDD: Supports 360KB~2.88MB floppy drives.

USB: Two USB 1.0 interfaces (via onboard pins), supporting overcurrent protection.

4. Serial parallel and keyboard mouse

COM1: RS-232 (10 pin pin).

COM2: Optional RS-232/422/485 (via jumper configuration), suitable for long-distance or differential signal communication in industrial sites.

Parallel port: Supports SPP/EPP/ECP mode, with ESD protection up to 4KV.

PS/2: The keyboard and mouse are independently 6-pin Mini DIN pins.

5. Ethernet (NuPRO-595 only)

Intel 82559 Fast Ethernet Controller, 32-bit PCI bus master, supports 10/100Mbps adaptive, full duplex/half duplex, remote wake-up (WOL), and ACPI power management.

6. Hardware monitoring

Winbond W83781D monitoring IC, real-time detection of CPU and system temperature, core voltage (VCORE),+3.3V/+5V/+12V/-12V power supply, CPU fan speed, chassis opening status, etc., can set alarm thresholds through the matching Hardware Doctor software.

Key jumper configuration and CPU settings

Correctly setting jumper wires is the foundation for stable system operation. The following are the core jumpers and their functions (see the layout diagram in the manual for specific locations):

1. CPU external frequency and multiplier (JP7)

JP7 is a 3 × 2 pin set used to set CPU multiplier and bus frequency. Taking the 66 MHz external frequency as an example:

CPU model multiplier frequency JP7 (5/3/1 pins)

Intel Pentium 2× 133 MHz ON / OFF / ON

Intel Pentium 2.5× 166 MHz OFF / ON / ON

Intel Pentium 3× 200 MHz OFF / ON / OFF

Intel Pentium 3.5× 233 MHz OFF / OFF / OFF

AMD K6-2/-3 2.5× 166 MHz OFF / ON / ON

AMD K6-2/-3 3× 200 MHz OFF / ON / OFF

AMD K6-2/-3 3.5× 233 MHz OFF / OFF / OFF

Cyrix MII 2× 133 MHz ON / OFF / ON

Cyrix MII 2.5× 166 MHz OFF / ON / ON

Cyrix MII 3× 200 MHz OFF / ON / OFF

(Note: "ON" in the table indicates short circuit, and "OFF" indicates open circuit; The specific combination needs to be confirmed by referring to the manual table. ）

2. CPU core voltage (JP9)

The VCORE required for different processors varies, and JP9 offers multiple options ranging from 1.9V to 2.8V. For example:

1.9V: JP9 pin 9 OFF, 7 ON, 5 ON, 3 ON, 1 OFF

2.0V: All OFF

2.1V：9 ON、7 OFF、5 OFF、3 OFF、1 OFF

2.2V：9 OFF、7 OFF、5 OFF、3 OFF、1 ON

2.3V~2.8V and so on. When replacing the CPU, it is necessary to verify its voltage specifications to avoid overvoltage damage.

3. CPU I/O voltage (JP4, JP5)

Set I/O buffer voltage, optional 2.5V or 3.3V. Usually matched with CPU type, such as Pentium MMX using 3.3V.

4. Clear CMOS (JP2)

Short circuiting 1-2 of JP2 can clear CMOS content (including BIOS password and settings), and after restoring normal operation, the jumper needs to be restored to 2-3 (normal working mode).

5. LCD power supply (JP1)

Select the required voltage for the LCD panel, which can be either 3.3V or 5V, and must be set according to the panel specifications.

Onboard interface and external connection

The NuPRO-595 offers a wide range of I/O connectors, some of which require additional cable connections.

1. IDE (CN1) and FDD (CN3)

IDE: 40 pin standard interface, supporting master/slave devices (selected through IDE cable).

FDD: 34 pin interface, supports up to two floppy drives.

2. Serial port (COM1/COM2)

COM1 (CN11): 10 pin pin, RS-232 level, providing DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI.

COM2 (CN10): Same 10 pin, but can be set to RS-422/485 via jumper (requires additional configuration of transceiver control).

3. Parallel (CN2)

25 pin D-sub female socket (usually led out through a bracket), supporting SPP/EPP/ECP.

4. PS/2 keyboard and mouse (CN9, CN8)

All are 6-pin Mini DIN pins, and the keyboard provides Clock, Data,+5V, and GND; Mouse is similar.

5. VGA (CN6) and LCD (CN4/CN5)

VGA: 15-pin D-sub analog output.

LCD: Supports TFT/DSTN panels through dedicated connectors for synchronous or independent display.

6. Ethernet (CN7, only 595)

RJ-45 connector with dual color LED indicating link and activity status.

7. Power input (CN13)

4-pin socket, providing+12V, GND, GND,+5V, compatible with AT power supply. If using an ATX power supply, it is necessary to connect the ATX control signal (such as CN1's Power On).

8. Front panel control interface (CN1)

Including power LED, keyboard lock, reset switch, hard disk LED, ATX power switch, etc., all provided in the form of 2.54mm pins.

Watchdog timer configuration

The NuPRO-595 is equipped with a programmable watchdog and a logic device based on the Winbond W83977EF super I/O chip. Its core function is to automatically generate a reset or interrupt signal when the system software fails to "feed the dog" on time, thereby restoring normal system operation. This is crucial for unmanned industrial sites.

1. Configure registers

The watchdog related registers are located in CRF2 (counter preset value), CRF3 (reset/interrupt trigger condition), and CRF4 (counting unit - seconds or minutes) of logic device 8. The configuration is achieved by accessing the I/O ports 3F0h/3F1h, which requires entering the extended function mode first (writing 87h twice to 3F0h), and exiting after the configuration is complete (writing 0Ah).

2. Practical application suggestions

In applications, the dog can be fed by periodically writing overload commands to specific I/O ports.

If the reset function is not required, CRF2 can be set to 00 to disable timeout.

The counting unit can be selected in seconds or minutes, suitable for scenarios with different response speed requirements.

Key points of BIOS settings

Award BIOS provides a variety of options, including several closely related to industrial applications:

1. Characteristics of Chipset

System BIOS Cacheable/Video BIOS Cacheable: It is recommended to enable it to improve performance.

Memory Hold at 15M-16M: If the Legacy ISA card requires this address space, enable it.

Power Supply Type: Selecting AT or ATX affects power management and wake-up functions.

2. Power management

Power Management: If CPU overheat protection is required, it cannot be set to Disabled.

Video Off Method: Recommend V/H SYNC+Blank (best compatibility).

PowerOn by Ring/Wake Up On LAN: If remote wake-up is required, ensure that the ATX power supply and relevant jumpers are enabled.

3. PnP/PCI configuration

Resources Controlled by: It is recommended to set it to Manual to manually allocate IRQ to ISA devices and avoid conflicts.

PCI IDE IRQ Map To: Usually set to PCI-AUTO, BIOS automatically assigns IRQ14/15.

4. Integrate peripherals

Onboard VGA/LAN: enabled by default, can be turned off to free up resources if an external expansion card is used.

UART Mode Select: COM2 can be set to IrDA or ASKIR for infrared communication (corresponding hardware required).

5. LCD panel type (Power Management Setup page)

Up to 16 preset panel types are available, covering TFT/DSTN screens from 640 × 480 to 1280 × 1024, and users can choose according to their actual LCD specifications.

Hardware Monitoring and Hardware Doctor Application

Winbond W83781D, in conjunction with Hardware Doctor tool, can monitor in real-time:

Voltage: VCORE,+3.3V,+5V,+12V, -12V.

Temperature: CPU temperature (onboard thermistor) and system temperature (via JP6 external sensor).

Fan speed: CPU fan (3-pin with speed feedback).

Chassis opening: via JP8 external micro switch.

The software interface indicates the status in green/red, with customizable alarm thresholds and support for buzzer alarms. When the temperature exceeds the upper limit, the warning will continue until the temperature drops below the "upper limit -5 ° C" to avoid frequent triggering.

Practical suggestion: If the motherboard is not connected to a fan, please disable the fan monitoring in the configuration page to avoid false alarms.