Emerson / Motorola / Force Computers SYS68K CPU-40B/4-01 Single Board Computer

The Emerson / Motorola / Force Computers SYS68K CPU-40B/4-01 is a single-slot VME module single-board computer built around the Motorola 68040 32-bit microprocessor running at 25.0 MHz. Designed for embedded systems and industrial control applications, this VMEbus-compatible board delivers the processing power and memory architecture required for complex real-time tasks in harsh operating environments.

Technical Specifications

Processor: Motorola 68040, 32-bit, 25.0 MHz

Architecture: VMEbus compatible; supports A32, A24, A16 address spaces with D8, D16, D32 data paths

Shared DRAM: 4 Mbyte with burst READ/WRITE, parity generation and checking, 14µs asynchronous refresh

Local SRAM: 128 Kbyte with on-board battery backup

Local FLASH EPROM: 128 Kbyte with on-board programming support

System EPROM: Two 40-pin sockets (32-bit data path); one dedicated boot socket

DMA Controller: 32-bit FGA-002 for transfers to shared RAM, VMEbus memory, and I/O subsystems

Real-Time Clock: 72423 RTC with on-board battery backup

Timers: Two 24-bit with 5-bit prescalers; one 8-bit

Key Features

Four front-panel serial I/O interfaces (RS232/RS422/RS485 configurable) using 68562 DUSCC

One 8-bit parallel interface with 4-bit handshake

FLXi (FORCE Local eXpansion) interface for EAGLE-01C module support (SCSI, floppy, Ethernet)

VMEbus RMW (Read-Modify-Write) and UAT capabilities

VMEPROM Real-Time Kernel firmware included

Single-slot form factor

Typical Applications Industrial control systems, embedded processing, VMEbus-based instrumentation, data acquisition, and real-time signal processing requiring 32-bit computation and multi-interface connectivity.

Compatibility & Integration Full VMEbus compliance enables integration into existing chassis environments. The FLXi expansion interface and modular memory architecture support field upgrades and custom I/O configurations.