ADLINK M-302 Industrial Motherboard Installation and BIOS Optimization Guide

Reset button (RESET): pin 15/16

Hard Disk Activity LED (HDLED): Pin 17/18

Power LED: Pin 1/3 (pay attention to polarity)

Deep optimization of BIOS settings

M-302 uses AMI BIOS (16Mb Flash), press Del to enter when booting up. The following are key settings:

1. Standard CMOS settings

Date/time, hard disk parameters (can be set to Auto auto detect), floppy drive type (if none, set to None).

Halt On suggests setting it to "All, But Keyboard" to avoid getting stuck when there is no keyboard.

2. Advanced BIOS features

CPU L1&L2 Cache: Must be enabled, otherwise performance will plummet.

Quick Power On Self Test: It can be turned on to accelerate startup, but can be turned off during troubleshooting.

Boot Device Sequence: Set as preferred based on the installation medium (such as USB CD-ROM for system installation).

Hyper Threading: If supported by the CPU, enabling it can improve multi-threaded performance.

Security Option: If System is set, a password is required every time the device is turned on; Setup only requires a password to enter BIOS.

Console redirection: supports remote management through serial port, suitable for applications without graphics cards.

3. Advanced chipset features

System BIOS Cacheable: Enabling it can improve BIOS call speed, but it can be turned off if instability occurs.

Memory Hold at 15M-16M: Only turned on when using an old ISA card, usually kept disabled.

VGA settings: PEG/OChip VGA Control can choose "Auto" or "Onchip VGA" to force the use of integrated graphics cards, or "PEG Port" to prioritize independent graphics cards. It is recommended to set the On Chip Frame Buffer Size to 8MB, select "BOTH" for DVMT mode, and allocate an appropriate size (such as 256MB).

4. Integrate peripherals

SATA Mode: Default to IDE (compatible with traditional mode). If RAID or AHCI (supporting hot swapping and NCQ) is required, it can be switched to RAID or AHCI, but the corresponding driver needs to be loaded before installing the OS.

HD Audio CODEC: It must be enabled, otherwise there will be no audio output.

Super I/O device: Onboard Serial Port 1/2 can set address/IRQ (default 3F8/IRQ4 and 2F8/IRQ3), can be changed if there is a conflict; It is recommended to set ECP+EPP for Parallel Port mode to be compatible with high-speed devices.

PWRON After PWR Fail: Setting "Former Sts" can restore the last state after power failure and is suitable for unmanned operation.

5. Power management

ACPI Function: Must be enabled to support soft shutdown and S3 sleep.

Power Management: Optional User Define to set various timeouts.

Video Off Method: Recommended DPMS (if supported by the monitor).

Suspend Mode, HDD Power Down: Set timeout according to requirements.

Resume by Alarm: Can be set to start at a specific time (RTC wake-up).

6. PnP/PCI configuration

Init Display First: If using a discrete graphics card, select PCI Slot; If using integrated display to select Onboard.

Reset Configuration Data: When unable to start after replacing the PCI card, it can be temporarily enabled once.

PCI Latency Timer: default 64, can be adjusted appropriately, but generally remains the default.

7. Frequency/Voltage Control

Spread Spectrum: Enabling it can reduce EMI, but may affect clock accuracy. For industrial environments, it is recommended to turn it off or choose according to requirements.

Finally, 'Fail Safe Defaults' and' Optimized Defaults' can be loaded separately, with the former being conservative and stable, and the latter being performance optimized.

Driver installation process (Windows XP 32-bit)

The directory structure of the M-302 driver CD is clear, and it is recommended to install it in order:

Chipset driver (Chipset setup. exe): Install the INF file to enable the system to correctly recognize Q965/ICH8DO.

Graphics card driver (VGA WIN2KXP_32 setup. exe): Enable GMA 3000 hardware acceleration and support dual screen display.

Network card driver (LAN Windows 2000_XP_2003 Server PRO2KXP. exe): Drivers Intel 82566DM Gigabit network card.

Audio driver (Audio 32bit 2K_XP setup. exe, if board number suffix ≥ 0070, use Audio XP 32_64 directory): Install Realtek ALC892 or ADI AD1988 driver.

All drivers need to be restarted after installation. For Windows 7/Vista, the corresponding version needs to be downloaded from the official website, which is not detailed in the manual but is supported.

Hardware monitoring and watchdog timer programming

1. Hardware monitoring

The motherboard is equipped with W83627DHG-A Super I/O, which can monitor CPU/system temperature, fan speed (CPU_SAN, CHA_SAN2, PWR_FAN), and core voltage (+3.3V,+5V,+12V, etc.). Real time values can be viewed in the "PC Health Status" of the BIOS, and the system will alarm when exceeded.

2. Watchdog Timer (WDT)

The watchdog can automatically reset when the system freezes, suitable for unmanned devices. The WDT of M-302 is controlled by logic device 8 of Super I/O, and the programming process is as follows (C language example):

//Unlock Super I/O

outportb(0x2E, 0x87);

outportb(0x2E, 0x87);

//Select logical device 8

outportb(0x2E, 0x07);