The Emerson / Motorola / Force Computers SYS68K / IBC-20/1 is a high-performance VMEbus controller board built around the Motorola MC68020 32-bit microprocessor running at 25.0 MHz. Purpose-built for real-time control and data acquisition in demanding industrial environments, this board combines efficient processing architecture with extensive memory options and on-board timing resources. The design supports floating-point coprocessor upgrades and modular expansion, making it suitable for systems requiring deterministic response and reliable non-volatile storage.
## Technical Specifications
• **Processor:** Motorola MC68020 32-bit microprocessor @ 25.0 MHz
• **Floating Point Coprocessor:** Optional MC68882 upgrade supported
• **Shared Main Memory:** Up to 4 MB static RAM accessible from VMEbus
• **System Memory Expansion:** Up to 8 MB via IBC MOD-1 module with FLASH EPROM devices
• **Non-Volatile RAM:** 128 KB Flash Memory (read/write)
• **Local SRAM:** 32 KB with battery backup
• **DMA Controller:** 32-bit architecture
• **Timers/Counters:** Three 16-bit units
• **Real-Time Clock:** Integrated calendar function
• **Gate Array:** FORCE COMPUTERS FGA-002A
## Key Features
• Serial I/O debugging port for development and troubleshooting
• Battery-backed local SRAM preserves critical data during power loss
• FLXi/EAGLE module interface support for peripheral expansion
• Modular memory architecture scales from 4 MB to 8 MB configurations
## Typical Applications
• VMEbus-based industrial control systems
• Real-time data acquisition platforms
• Embedded control requiring deterministic processing
• Systems demanding extended non-volatile storage and calendar timekeeping
## Compatibility & Integration
Designed as a VMEbus board with standard backplane interface. Accepts IBC MOD-1 modules for memory expansion and integrates FLXi/EAGLE peripheral modules. MC68882 coprocessor installation available for floating-point computation acceleration.
