The Emerson/Motorola MVME147-011 is a VMEbus single-board computer built on the Motorola MC68030 32-bit microprocessor running at 25 MHz. This double-height 6U VME module delivers industrial-grade computation with integrated memory management, on-chip instruction/data cache, and optional floating-point coprocessor support. The board combines 4 MB DRAM, 4 KB SRAM, non-volatile timekeeping, and multi-protocol I/O—serial, parallel, SCSI, and Ethernet—in a compact form factor suitable for embedded systems requiring A32/D32 VMEbus master/slave operation and system controller functions.
## Technical Specifications
**Processor & Memory**
• Motorola MC68030 microprocessor at 25 MHz with on-chip instruction and data cache (20–40% efficiency gain)
• Integrated Memory Management Unit (MMU) for virtual memory and software protection
• Optional Motorola MC68882 floating-point coprocessor at 25 MHz
• 4 MB shared DRAM
• 4 KB × 8 SRAM
• MK48T08 non-volatile RAM with battery-backed time-of-day clock
• Four 28/32-pin sockets for ROM/PROM/EPROM/EEPROM (16-bit wide)
**VMEbus Interface**
• A32/D32 master/slave operations with system controller capability
• 7-level interrupt support
• ANSI/VITA 1-1994 VME64 (IEEE STD 1014) compliant
• MVME6000AC VME bus controller
**Communications & I/O**
• Four EIA-232-D serial ports via 8530 serial controller
• One 8-bit bidirectional parallel port (Centronics compatible)
• WD33C93B narrow SE SCSI bus controller with DMA support
• AMD AM7990 LANCE 10 Mb Ethernet MAC with Intel LXT901 Serial Interface Adapter
• External I/O via P2-VME connector (compatible with MVME712 transition modules)
**On-Board Controllers**
• Watchdog timer
• Programmable tick timers
• General Control Chip (GCC) ASIC
• Peripheral Channel Controller (PCC) ASIC
## Key Features
• 147Bug on-board debugger and diagnostic firmware
• Support for Motorola System V/68, OpenBSD/mvme68k, NetBSD/mvme68k, pSOS+, LynxOS, OS-9, VRTX-32, and VxWorks
• Integrated development tools and UNIX SYSTEM V/68 driver packages
• Double-height 6U form factor: 233.4 mm (H) × 160.0 mm (D)
## Typical Applications
Process control, data acquisition, embedded system controllers, and distributed VME-based instrumentation requiring 32-bit computation with real-time I/O handling.
