Emerson / Heurikon HK68 / V4F Microcomputer VME Module

The Emerson/Heurikon HK68/V4F is a 32-bit VMEbus microcomputer module built around the Motorola MC68040 processor for real-time embedded and industrial applications. This single-board computer delivers 13.5 VAX MIPS and 3.6 MFLOPS performance in demanding multiprocessing environments requiring simulation, image processing, data acquisition, and industrial control.

## Technical Specifications

**Processor**
• Motorola MC68040 CISC CPU running at 33 MHz
• 4 KB instruction cache, 4 KB data cache
• Paged MMU with dual 64-entry, 4-way, set-associative TLBs
• IEEE-P754 binary floating-point implementation

**Memory**
• 8 or 16 Mbytes DRAM with parity
• 2-bank interleaved architecture with write posting buffers
• 70 ns page mode DRAM

**VMEbus Interface**
• 32-bit data path, 32-bit addressing, 7 bus interrupts
• D32A32(7) Compliance Level with master/slave operation
• System controller functions with 4-level arbitration
• VIC068 VME Interface Chip implementation
• Block transfer rates: 9 Mbytes/sec read, 7 Mbytes/sec write (MOVEM transfers)
• VME64 interface optimized for multiprocessing

**VSB (VME Subsystem Bus)**
• 32-bit multiplexed address/data bus
• Master/Slave mode with arbiter capability
• Block read: 9.45 Mbytes/sec; block write: 9.65 Mbytes/sec
• Mailbox interrupts, CPU interrupt, reset, and VMEbus lock support

**Corebus (Mezzanine Interface)**
• 32-bit address and 32-bit data paths
• Synchronous multimaster module bus operating at CPU clock (33 MHz)
• 106 Mbytes/sec 4-word burst transfer capability
• Asynchronous Module Peripheral Bus for low-speed I/O

**Peripheral I/O**
• Two front-panel serial interface ports
• SCSI and Ethernet support via Corebus expansion modules

## Key Features

Multilayer construction with ground and VCC planes ensures signal integrity. Reset switch on front panel provides local control. The architecture supports both private data transfer (VSB) and custom expansion (Corebus) for tailored system designs.

## Typical Applications

Simulation, image processing, printing, data acquisition, industrial control.

## Compatibility & Integration

VxWorks and OS-9 real-time operating systems with development environments provide software support for rapid application development.