Motorola MVME2600 Series VME Boards: MVME2604 761I/O MVME260476

Technical Dossier

Product Details And Specifications

Motorola MVME2600 Series: Comprehensive Module Range and Technical Overview

The Motorola MVME2600 series represents one of the most widely deployed VMEbus single-board computer (SBC) platforms in global heavy industry. Based on the PowerPC architecture, these boards have been installed across petrochemical refineries, nuclear power generation facilities, offshore oil platforms, and continuous-process chemical plants where deterministic real-time performance and long-term hardware stability are non-negotiable requirements. The MVME2600 family operates within the VME64 backplane standard, making it backward-compatible with VME32 infrastructure — a critical factor for facilities that cannot afford full control system replacement. Installed base estimates place the MVME2600 series among the top five most common embedded SBC platforms in legacy Distributed Control Systems (DCS) and SCADA architectures globally.

The Evolution of MVME2600 Architecture

The MVME2600 series was introduced by Motorola Computer Group in the mid-1990s as a successor to the MVME167 and MVME177 68k-based platforms, marking Motorola's transition to the PowerPC RISC architecture for embedded industrial computing. The initial MVME2600 variants used the MPC603e processor, with subsequent revisions migrating to the MPC604e for higher throughput applications. The MVME2604 variant — including the MVME2604 761I/O MVME260476 — introduced expanded I/O configurations and enhanced memory addressing, supporting up to 256 MB of ECC DRAM.

Motorola's embedded computing division was later acquired by Emerson Network Power, which continued to manufacture and support the MVME2600 line under the Emerson brand before transitioning support responsibilities to Artesyn Embedded Technologies. As of 2026, the entire MVME2600 series is classified as End-of-Life (EOL) by the current IP holder. No new production runs are planned. This places the MVME2600 squarely in the category of long-term maintenance parts, where third-party suppliers and refurbished inventory channels are the primary sourcing mechanism for operating facilities.

Compatibility note: MVME2600 boards interface with Motorola's MVME712 transition modules and MVME761 I/O transition modules (as referenced in the 761I/O designation of the MVME2604 761I/O MVME260476). These transition modules route front-panel I/O to rear-panel P2 connectors and are equally subject to obsolescence constraints.

MVME2600 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the Motorola MVME2600 product family. Each entry reflects a distinct hardware configuration. Models are organized by functional category.

Single-Board Computers (SBC) — CPU & Controller Modules

• MVME2600-001: Base MVME2600 SBC, MPC603e 300MHz, 32MB DRAM, VME64 interface
• MVME2600-002: MVME2600 SBC variant with 64MB ECC DRAM, enhanced memory bus
• MVME2604-761I/O: MVME2604 SBC with integrated MVME761 I/O transition module configuration
• MVME2604 761I/O MVME260476: Full assembly — MVME2604 board paired with MVME260476 I/O transition card, rear P2 I/O routing
• MVME2600-011: MPC604e 350MHz processor variant, 128MB ECC DRAM, extended temperature range
• MVME2600-012: High-memory configuration, 256MB ECC DRAM, dual Ethernet (10/100BaseT)
• MVME2604-012: MVME2604 with 256MB DRAM, dual serial ports, SCSI-2 interface
• MVME2604-021: MVME2604 variant with PMC expansion site, single Ethernet, 128MB DRAM

I/O Transition Modules

• MVME712M: Standard I/O transition module, routes SCSI, Ethernet, serial to rear P2
• MVME712A: MVME712 variant with additional RS-232 serial port breakout
• MVME761: Enhanced I/O transition module for MVME2600/2700 series, P2 rear I/O
• MVME760: Transition module supporting dual PMC I/O routing to rear panel
• MVME260476: Transition card assembly specific to MVME2604 761I/O configuration

Memory & Storage Expansion

• MVME2600-DRAM-128: 128MB ECC DRAM SODIMM upgrade kit for MVME2600 series
• MVME2600-DRAM-256: 256MB ECC DRAM maximum memory configuration kit
• MVME2600-FLASH: 8MB onboard Flash upgrade for boot ROM and firmware storage

Communication & Network Modules

• MVME2600-ETH: Integrated Intel 82559 10/100BaseT Ethernet controller (onboard)
• MVME2600-SCSI: Onboard Symbios Logic 53C876 dual-channel SCSI-2 controller

Sourcing Hard-to-Find & Obsolete MVME2600 Parts

The MVME2600 series reached official End-of-Life status, and OEM replacement inventory has been exhausted through standard distribution channels. Facilities operating DCS or SCADA systems built on MVME2600 infrastructure face a defined set of sourcing constraints: no new-manufacture replacements, limited certified refurbished stock, and increasing lead times from general surplus markets.

DriveKNMS maintains a dedicated inventory program for MVME2600 series components, including the MVME2604 761I/O MVME260476 and associated transition modules. Our sourcing protocol covers:

• Verified refurbished MVME2600 SBCs with full functional test records
• Matched-pair sourcing for MVME2604 + MVME761/MVME260476 transition module assemblies
• Cross-reference lookup for Emerson and Artesyn part number equivalents
• Emergency same-week dispatch for critical plant maintenance scenarios
• Long-term consignment agreements for facilities requiring guaranteed spare parts availability over 5–10 year maintenance windows

For facilities planning lifecycle extension beyond 2030, DriveKNMS recommends establishing a minimum buffer stock of two (2) MVME2604 assemblies and one (1) spare MVME761 transition module per control system node.

Quality Control for the MVME2600 Range

The MVME2600 series presents specific test challenges due to its VME64 backplane interface, PowerPC processor architecture, and multi-layer PCB construction. DriveKNMS applies the following test protocol to all MVME2600 units prior to dispatch:

• VME64 Bus Integrity Test: Full address/data bus verification using a dedicated VME64 backplane test fixture, confirming all 64 data lines and 32 address lines are functional
• PowerPC Boot Verification: Cold-boot and warm-boot cycle testing under Motorola EPPC-Bug firmware, confirming processor initialization, memory controller, and DRAM ECC function
• ECC DRAM Stress Test: 72-hour burn-in with memory write/read/verify cycles across the full installed DRAM capacity, with ECC error logging reviewed post-test
• Ethernet Controller Test: 10/100BaseT loopback test on the Intel 82559 controller, packet integrity verification at both speeds
• SCSI Bus Test: Symbios 53C876 controller verification using SCSI loopback terminator, confirming both channels operational
• I/O Transition Module Continuity: Pin-level continuity test on MVME761/MVME260476 P2 connector routing, verifying all signal paths from front-panel to rear-panel breakout
• Thermal Cycling: Operational test across 0°C to 55°C range, confirming no thermal-induced failures in processor, memory, or bus interface logic