Overview

Key Specifications

• CPU: 80486DX4, 100 MHz (for XVME‑675/18, /19 models)
• Memory: 16 MB or 32 MB dual-access DRAM; 256 KB EPROM; 1 MB video DRAM
• Bus: 32-bit VMEbus (master/slave); 8.25 MHz AT-bus
• Display: Super VGA controller, maximum resolution 1024 × 768, 256 colors
• I/O Interfaces:Power Requirements: +12 V @ 24 mA; -12 V @ 24 mA; +5 V (typical 3.9 A, maximum 4.9 A)
  • 2 × RS-232C serial ports
  • 1 × Centronics parallel port
  • PS/2-compatible keyboard/mouse interface
  • 2 × IDE hard disk controllers
  • 2 × AT-compatible floppy disk controllers

Product Features

• Double-high single-board design, compatible with single-slot P1 + P2 backplanes.
• Full support for 32-bit VMEbus interrupts and address space.
• Field-programmable BIOS (XBIB) provides access to module attributes, processor speed, BIOS version and other key information.
• Integrated watchdog timer and Motorola 146818A-compatible real-time clock to enhance operational reliability.

Structure and Components

• CPU Board: Integrates microprocessor, memory, video controller and I/O control chips. Refer to Drawing D-2 for the assembly diagram.
• Memory Board: Features dual-channel DRAM and EPROM to enable high-speed data access.
• VMEbus Interface: Complies with VMEbus physical and electrical specifications, supporting both master and slave functions.
• Expansion Slot: PC/104 expansion site for easy integration of custom functional modules.

Application Areas

• Industrial automation control systems (DCS, PLC)
• Embedded computing platforms and on-site monitoring workstations
• Real-time control scenarios requiring VMEbus high reliability and PC/AT software compatibility

Installation and Maintenance

• Installation: Requires a dual-backplane (P1 + P2) slot and accommodates the module’s double-high form factor. Adhere to VMEbus backplane mechanical and electrical specifications during installation.
• Jumpers and Connections: Configure CPU, memory and I/O jumpers according to application requirements; connect IDE, floppy disk, keyboard, mouse and other peripherals to corresponding interfaces.
• BIOS Configuration: Set parameters such as time, date and memory mapping via the BIOS menu.