MVME147-011 MOTOROLA

Product Core Brief

Model: MVME147-011
Brand: Motorola Computer Group
Series: MVME147 VMEbus Single Board Computers
Core Function: 25 MHz MC68030 VMEbus master/slave processor module with Ethernet SCSI
Product Type: Double-height VMEbus SBC
Key Specs: 4 MB DRAM parity | 4 serial ports | Ethernet transceiver | SCSI DMA | A32/D32 VME
Condition: ⚠️ Obsolete, limited stock

Product Introduction

MOTOROLA MVME147-011 provides 25 MHz MC68030 processor performance with MC68882 FPU, 4 MB parity DRAM, and integrated Ethernet/SCSI interfaces for VMEbus embedded systems. The double-height SBC supports A32/D32 master/slave operation with system controller capability and includes MVME147BUG debug firmware.

The module routes Ethernet and SCSI to P2 connectors while four EIA-232 serial ports and Centronics parallel connect to front panel or P2 I/O. Field teams deploy it in process control, telecom switching, and military systems where 68030 ISA performance meets legacy VMEbus requirements.

Frequently Asked Questions

Q: Does the MVME147-011 support hot-swapping in a VMEbus chassis?
A: Honestly, VMEbus lacks hot-swap standards and this board draws up to 5 A at +5 V under full load. Live removal drops Ethernet, SCSI, and all four serial channels simultaneously while risking backplane arbitration faults. Power down the entire crate, verify all rails discharge safely, confirm no bus grant conflicts, and reseat firmly before power-up.

Q: Is the MVME147-011 obsolete, and is there a direct replacement?
A: The MVME147 series represents 1990s 68030 technology with no drop-in Motorola successor. Modern VME SBCs use PowerPC or x86 architectures requiring complete VxWorks/pSOS+ porting, VME driver rewrite, and I/O remapping. For field spares, source verified MVME147-011 from reputable channels before last-time-buy exhaustion.

Q: Will I lose firmware or configuration when replacing the board?
A: Firmware resides in four socketed 28/32-pin EPROMs (≤200 ns access)—engineers frequently damage these during swaps. Archive all EPROM contents using external programmer with checksum verification before removal, document socket population exactly, and transfer to replacement board. Run MVME147BUG POST to validate before application code load.

Q: Are these units factory-new or refurbished?
A: New Surplus delivers unused boards from decommissioned spares or OEM overstock with zero runtime hours. Refurbished MVME147-011 carries risk of aged DRAM, SCSI controller wear, and quartz degradation; demand vendor proof of 4 MB memory march test, Ethernet/SCSI self-tests, QUART serial loopback on all channels, and extended burn-in before acceptance.

Q: What warranty coverage and lead times are typical?
A: Twelve months covers functional defects under controlled conditions, excluding VMEbus electrical overstress, EPROM mishandling, insufficient cooling, or operation beyond 0–55 °C with 490 LFM airflow. Shelf stock ships immediately while legacy sourcing requires 4–12 weeks; secure firm delivery date and RMA process before critical spares commitment.