GE VMIVME-7807
GE VMIVME-7807
GE VMIVME-7807
GE VMIVME-7807
GE VMIVME-7807

GE VMIVME-7807 | Pentium M VME Single Board Computer – Industrial Field Notes

  • Model: VMIVME-7807
  • Alt. P/N: VMIVME-7807RC (RoHS variant), VMIVME-7807-412010, VMIVME-017807-413000
  • Product Series: GE Fanuc Intelligent Platforms / Abaco Systems VME Single Board Computers
  • Hardware Type: Single-slot 6U VME64 single board computer (SBC)
  • Key Feature: 1.8 GHz Intel Pentium M with 855GME chipset, dual Gigabit Ethernet, and passive cooling for high-reliability applications
  • Primary Field Use: High-performance embedded computing in VME-based industrial control, data acquisition, and military/aerospace systems
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Part number: GE VMIVME-7807
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Description

Hard-Numbers: Technical Specifications

  • Processor: Intel Pentium M 1.1 GHz to 1.8 GHz (configurable variants), 2 MB L2 cache

  • Chipset: Intel 855GME with integrated graphics

  • System Bus: 400 MHz front-side bus
  • Memory: Up to 1.5 GB DDR SDRAM (1 SODIMM slot + 512 MB soldered onboard), optional ECC support

  • Storage: Up to 2 GB bootable CompactFlash (IDE interface), Serial ATA (SATA) support for hard drives

  • Graphics: Intel 855GME integrated SVGA (front panel VGA) + DVI-D (rear I/O), dual independent display support up to 1600×1200

  • Network: Dual Gigabit Ethernet (Intel 82546EB, 10/100/1000 Mbps) + single 10/100 Ethernet (Intel 82551ER)

  • Serial Ports: 4× RS-232/422/485 (16550-compatible), COM1 front panel, COM2-4 rear I/O

  • USB: 4× USB 2.0 ports (2 front panel, 2 rear I/O)

  • Expansion: 1× PMC-X slot (PCI-X 66 MHz, front panel access) for custom I/O

  • Non-Volatile Memory: 32 KB SRAM with battery backup

  • Watchdog Timer: Programmable, supports reset or interrupt

  • Real-Time Clock: Battery-backed RTC

  • Power Supply: +5 VDC from VME backplane, 25W typical, 30W maximum

  • Operating Temperature: 0°C to +60°C (1.1 GHz variant), -40°C to +85°C (other variants with heatsink)

  • Cooling: Passive cooling (no fans), aluminum heatsink with thermal interface

  • Form Factor: 6U VME Eurocard, single-slot (233.35 mm × 160 mm)

  • Weight: Approximately 1.2 kg

  • Operating Systems: Windows XP/2000, VxWorks, QNX, LynxOS, Linux, Solaris x86

  • Certifications: CE, UL, RoHS (VMIVME-7807RC variant)

    GE VMIVME-7807

    GE VMIVME-7807

The Real-World Problem It Solves

You know the situation: legacy VME systems running on 200 MHz Pentium III boards that can’t handle modern HMI graphics, complex control algorithms, or Ethernet-based I/O. The VMIVME-7807 drops a 1.8 GHz Pentium M into that same 6U VME slot—giving you modern computing power without ripping out your backplane, cabling, or I/O infrastructure. The passive cooling eliminates fan failure risks in vibrating environments like turbine control cabinets or shipboard electronics.
Where you’ll typically find it:
  • Upgraded Mark VI Speedtronic turbine control systems replacing obsolete VMIVME-7750 or IS215UCVE boards
  • Military ground vehicle and naval shipboard C4ISR systems requiring MIL-STD-810G ruggedization
  • Aerospace test stands and engine monitoring systems where VME form factor is locked in by certification
Bottom line: It extends the life of VME-based control architectures by providing Pentium M performance with dual Gigabit Ethernet, letting you run modern operating systems and HMI software while preserving your VME I/O investment.

Hardware Architecture & Under-the-Hood Logic

The VMIVME-7807 is a complete Pentium M computer on a single VME card. Unlike stack-PC solutions, this is a native VME64 design with the Intel 855GME chipset providing integrated graphics and I/O. The board functions as both the application processor and the VMEbus master, interfacing with legacy I/O while providing modern network connectivity.
Signal flow and processing logic:
  1. Processing Core: The Pentium M executes the host OS and real-time applications with full x86 compatibility, including MMX and SSE instructions for signal processing
  2. Memory Architecture: DDR SDRAM provides high-bandwidth memory access; the 855GME chipset supports dual-channel operation for improved graphics performance
  3. VME Interface: The board interfaces with VME64 backplane via standard VME protocols, allowing access to legacy I/O modules and shared memory devices
  4. Network Integration: Dual Gigabit Ethernet ports provide redundant network paths or segregation of control traffic (real-time) from supervisory traffic (SCADA)
  5. Graphics Subsystem: The 855GME integrated graphics drives both analog VGA (local HMI) and digital DVI (remote displays) simultaneously—critical for operator interfaces in control rooms

    GE VMIVME-7807

    GE VMIVME-7807

Field Service Pitfalls: What Rookies Get Wrong

Assuming Active Cooling is Present Rookies see a Pentium M running at 1.8 GHz and assume there’s a fan somewhere. There’s not. The VMIVME-7807 relies entirely on passive heatsinking. Install it in a VME chassis with poor airflow or blocked ventilation slots, and you’ll get thermal shutdowns or intermittent lockups that look like software faults.
Field Rule: Verify your VME chassis has adequate vertical airflow (bottom intake, top exhaust) and that the chassis fans are operational. The heatsink on the VMIVME-7807 requires direct air movement across its fins. If the chassis runs hot (>45°C ambient), add a fan tray or upgrade chassis cooling before blaming the CPU.
Mixing Up Ethernet Ports The board has three Ethernet ports: two Gigabit (Intel 82546EB) and one 10/100 (Intel 82551ER). Rookies plug their control network into the 10/100 port and wonder why HMI response is sluggish, or they use the Gigabit ports for Modbus TCP and saturate the control network with SCADA traffic.
Quick Fix: Use the 10/100 port (Intel 82551ER) for dedicated control protocols (EGD, SRTP) that don’t need high bandwidth. Reserve the dual Gigabit ports for HMI/SCADA traffic and redundant network paths. Check the MAC addresses in BIOS—the Gigabit ports share a controller and have sequential MACs, while the 10/100 is separate.
Forgetting the PMC Site Clearance The PMC-X expansion site on the front panel allows custom I/O, but rookies install the VMIVME-7807 in a VME chassis without checking clearance for the PMC card. The mezzanine card adds 15-20mm height beyond the standard VME front panel.
Field Rule: Verify your VME chassis front panel aperture allows for PMC card protrusion. If the chassis has a fixed front cover or limited depth, you’ll crush the PMC connector or prevent proper seating. Remove the PMC retention clips if not using expansion, or specify a chassis with extended front clearance for PMC applications.
Confusing This with PowerPC Variants Some gray-market suppliers list VMIVME-7807 as a “PowerPC-based” board. It’s not—it’s x86 Pentium M. If you order expecting PowerPC architecture for a legacy VxWorks/PowerPC application, you’ll have incompatible binaries and a failed commissioning.
Field Rule: Verify the processor type in BIOS at power-up (Intel Pentium M). The VMIVME-7807 runs x86 operating systems only. For PowerPC VME applications, you need a different board (e.g., VMIVME-7805 or Motorola MVME series). Check the silkscreen on the PCB—Pentium M boards have Intel chipset markings, not PowerPC.

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