The Mercury Computer Systems Themis TSVME-133-4FPA is a 6U VME single board computer engineered for demanding embedded and industrial control applications. Built around the Motorola 68030 processor running at 20 MHz or 25 MHz, it pairs floating-point acceleration via the 68882 coprocessor with configurable memory architecture to handle compute-intensive tasks in real-time environments.
Technical Specifications
Processor & Coprocessor
• Motorola 68030 microprocessor: 20 MHz or 25 MHz
• Motorola 68882 floating-point coprocessor
Memory Subsystem
• DRAM: 1–8 MB dual-ported
• Local SRAM: 512 KB zero-wait state
• Ethernet buffer: 256 KB dedicated
• EPROM sockets: Four 32-pin JEDEC
Interfaces & Connectivity
• VME interface: VIC-based
• Serial ports: Four RS-232C
• Ethernet port
• SCSI interface
• Floppy disk interface
• Centronics interface (optional)
• I/O: Four multi-function connectors
• Timers: Two on-board
– Key Features
• Dual-ported DRAM architecture supports concurrent processor and VME access patterns
• Zero-wait state local memory minimizes instruction fetch latency
• Dedicated Ethernet buffer decouples network I/O from main memory bandwidth
• Four RS-232C serial ports enable multi-device communication and legacy system integration
• VIC-based VME arbitration ensures reliable bus mastery in multi-board chassis
• Floating-point coprocessor accelerates scientific and signal-processing workloads
– Typical Applications
VME-based industrial control systems, embedded signal processing, real-time data acquisition, and distributed computing nodes requiring moderate processing power with direct floating-point capability.
– Compatibility & Integration
The TSVME-133-4FPA operates as a VMEbus slave and master within standard 6U VME chassis. Its 68030-based architecture and peripheral set integrate with legacy and contemporary VME backplane systems, SCSI disk subsystems, and serial device networks common to industrial automation and test platforms.
