The Emerson/Motorola MVME105 is a double-high VMEbus single board computer combining a Motorola MC68010 processor with integrated parallel and serial I/O for industrial control and data acquisition systems. Operating at 10 MHz, the board provides 512 KB of on-board RAM shared with the VMEbus, expandable through dedicated sockets for EPROM and static RAM configurations. One RS-232 serial port (DB-25) and one Centronics parallel printer port enable connectivity to external peripherals. The MVME105 functions as a system controller with interrupt handling and Level 3 bus arbitration capabilities, supporting stand-alone operation when paired with an external power supply and terminal.
## Technical Specifications
• **Processor:** Motorola MC68010 at 10 MHz
• **On-Board RAM:** 512 KB (VMEbus-shared)
• **Memory Expansion:** Two sockets for 32K × 8 or 64K × 8 EPROMs; two additional sockets for 2K × 8 or 8K × 8 EEPROMs, 2K × 8/8K × 8/32K × 8 static RAMs, or 32K × 8/64K × 8 EPROMs
• **Bus Architecture:** VMEbus (double-high form factor)
• **Serial Interface:** One asynchronous RS-232 port (DB-25), configurable as EIA-232 DCE or DTE
• **Parallel Interface:** One Centronics parallel printer port
• **System Functions:** System controller, interrupt handler, Level 3 bus arbitrator
• **Power:** Stand-alone operation with external power supply
• **Emissions:** Compliant with FCC Class A RF energy limits in commercial environments
## Key Features
• Dual-port memory architecture enables concurrent processor and VMEbus access
• Flexible memory configuration supports multiple EPROM and RAM technologies
• Configurable serial port supports both DCE and DTE modes for diverse peripheral integration
• On-board bus arbitration simplifies multi-master VMEbus system design
• Double-high VME form factor optimizes crate utilization
## Typical Applications
• Industrial process control and automation
• Data acquisition and sensor interface systems
• VMEbus-based embedded computing platforms
• Peripheral device controllers requiring serial and parallel connectivity
## Compatibility & Integration
The MVME105 integrates directly into VMEbus systems as a standalone controller or co-processor. Documentation includes the MVME10 Series User’s Manual for implementation guidance.
