Motorola 01-W3914B VME CPU Controller Board
Motorola 01-W3914B | VME CPU Controller Board
The Motorola 01-W3914B (often identified with the sub-reference 01-W3914B-04A) is a high-performance CPU controller board designed for the VMEbus architecture.
This module is typically utilized as the main processing unit for MVME177 series single-board computers or similar high-reliability industrial control systems.
It is engineered to handle complex logic, data management, and real-time processing in legacy government and heavy-industrial infrastructure.
Technical Parameter Table
| Parameter | Specification |
| Model/Part Number | 01-W3914B / 01-W3914B-04A |
| Architecture | VMEbus (Double-high Eurocard) |
| Processor Family | Motorola 68K Series (typically MC68060 compatible) |
| Memory Support | Onboard DRAM and Battery-Backed SRAM (NVRAM) |
| Interface Ports | Serial (RS-232), SCSI, and Ethernet (via transition modules) |
| Bus Compatibility | A32/D32 VMEbus Master/Slave |
| Real-Time Clock | Integrated Time-of-Day (TOD) with Battery Backup |
| Operating Temp | 0°C to +55°C (Standard Industrial) |
Product Advantages and Features
High-Performance Processing: Optimized for the MVME177 ecosystem, providing significantly higher clock speeds and instruction throughput compared to earlier 68030/68040 boards.
Non-Volatile Storage: Includes a coin-cell battery-backed RAM to preserve critical system parameters and error logs during power cycles.
Deterministic Real-Time Execution: Built for RTOS (Real-Time Operating Systems) such as VxWorks and OS-9. ensuring precise timing for industrial processes.
Reliability: Designed for “operational conditions” (MOC) maintenance, often found in mission-critical government and aerospace defense systems.
Legacy Sustainability: Provides a pathway for extending the life of existing VME-based racks without requiring a complete system overhaul.
Application Cases
Government & Defense: Used in older radar signal processing and mission-control ground stations.
Power Plant Control: Managing core logic and safety-critical data in nuclear or hydroelectric monitoring systems.
Industrial Automation: Serving as the central CPU for large-scale manufacturing lines and PLC-interfaced systems.
Scientific Research: High-speed data acquisition in particle accelerators and experimental physics labs.
Other Models in the Same Series
This board is often paired or integrated with:
MVME177-003: The primary Single Board Computer that utilizes the 01-W3914B as its CPU module.
01-W3944B: A companion VME board often found in the same chassis configurations.
MVME712M: The standard I/O transition module used to break out the 01-W3914B’s signals to front-panel connectors.
Installation and Maintenance
Installation: Align the board with the P1 and P2 connectors of the VME chassis. Use the front-panel ejector handles to firmly seat the module. Ensure the module is secured with screws to provide proper grounding.
Battery Replacement: This module requires a 3V Lithium Coin Cell to maintain SRAM and the system clock. If the system fails to boot or loses its configuration, check the battery voltage (should be >2.8V).
| PROSOFT | 4301-MBP-DFCM |
| PROSOFT | MVI56-LTQ |
| PROSOFT | |
| PROSOFT | PTQ-PDPMV1 |
| PROSOFT | PTQ-PDPMV1 |
| PROSOFT | 6104-WA-PDPM |
| PROSOFT | PLX35-NB2 |
| PROSOFT | 5202-DFNT-MCM4 |
| PROSOFT | RLX2-IFH24E |
| PROSOFT | AN-X2-AB-DHRIO |
| PROTECH SYSTEMS | PBI-6SA |
| PRSTECH | DMP10.24-20 |
| PRSTECH | DMP10.24-20 |
| PRT | PSA300R-81 |
| PTM | PSMU-350-3 |
| PULS | SLA8.100 |
| QSI | QTERM-K65 |
Firmware Configuration: Access the onboard “Bug” monitor (MVME177Bug) via a serial terminal (9600 baud, 8N1) to configure VMEbus parameters and boot sequences.
ESD Warning: The 68K processor and DRAM are highly sensitive to static. Always use a grounded wrist strap when handling the 01-W3914B.
Unique Product Description
The Motorola 01-W3914B is a cornerstone of “legacy-grade” computing power.
It is a board built for a world where systems are expected to run for 20+ years without failure.
While modern hardware focuses on consumer-grade speed, the 01-W3914B prioritizes predictability and persistence.
For engineers maintaining the invisible infrastructure of the modern world—from government communication hubs to power grids—this CPU module is the essential heart of the machine.