Motorola MVME147S-1

Technical Dossier

Product Details And Specifications

Motorola MVME147 Series Technical Notes

The Motorola MVME147 series represents a generation of VMEbus-compliant single-board computers built around the Motorola 68030 processor, operating at 25 MHz with an on-chip MMU and FPU (68882). These boards were deployed extensively across global heavy industry — including petrochemical refineries, nuclear power plant control rooms, offshore platform SCADA systems, and continuous-process chemical facilities — where long-lifecycle embedded computing was a non-negotiable operational requirement. The MVME147 family interfaces directly with VMEbus backplanes (IEEE 1014-1987), making it a foundational compute node in distributed control systems (DCS) and supervisory control architectures built during the late 1980s through the mid-1990s. Installed base density remains high in facilities that have not undergone full DCS migration, creating sustained demand for verified spare units.

The Evolution of MVME147 Architecture

The MVME147 architecture evolved from Motorola's earlier MVME133 and MVME135 68020-based boards. The transition to the 68030 processor introduced on-chip paging hardware, eliminating the need for external MMU chips and reducing board complexity. Early MVME147 revisions used the MC68030RC25 at 25 MHz; later sub-variants introduced SCSI-2 controller upgrades (NCR 53C710) and revised DRAM configurations ranging from 1 MB to 16 MB. The MVME147S sub-series introduced enhanced SCSI and Ethernet (AMD LANCE 7996) integration on a single board, reducing slot consumption in constrained VME chassis. Compatibility across the series is governed by the VMEbus A32/D32 addressing model; however, firmware dependencies (MVME147 Bug monitor versions 1.x through 3.x) must be matched to the OS environment — typically OS-9, VxWorks 5.x, or LynxOS. Boards from different sub-revisions are not always firmware-interchangeable without ROM replacement. As the 68030 processor line entered end-of-life, Motorola transitioned customers toward the MVME162 and MVME167 (68040/68060-based) platforms, and subsequently to PowerPC-based MVME23xx and MVME24xx series. Sites still operating MVME147-based systems are in the mature-to-end-of-life phase of the product lifecycle; long-term maintenance support and verified spare inventory are the primary procurement drivers.

MVME147 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented MVME147 product range. Each entry reflects a distinct hardware configuration or factory option code:

MVME147S-1: 68030/25 MHz CPU, 1 MB DRAM, SCSI, Ethernet, VMEbus A32/D32
MVME147S-2: 68030/25 MHz CPU, 2 MB DRAM, enhanced SCSI-2, Ethernet (LANCE)
MVME147S-4: 68030/25 MHz CPU, 4 MB DRAM, SCSI-2, Ethernet, extended I/O
MVME147S-8: 68030/25 MHz CPU, 8 MB DRAM, SCSI-2, Ethernet, high-memory config
MVME147-001: Base 68030 CPU board, 1 MB DRAM, no on-board SCSI or Ethernet
MVME147-002: Base CPU, 2 MB DRAM, serial I/O (4x RS-232), no network
MVME147-004: Base CPU, 4 MB DRAM, 4x serial ports, parallel port option
MVME147-012: 68030 CPU, 1 MB DRAM, SCSI controller (NCR 53C710), no Ethernet
MVME147-013: 68030 CPU, 1 MB DRAM, SCSI + Ethernet (AMD LANCE 7996)
MVME147-014: 68030 CPU, 2 MB DRAM, SCSI + Ethernet, extended VME interface
MVME147-016: 68030 CPU, 4 MB DRAM, SCSI + Ethernet, battery-backed SRAM option
MVME147-020: 68030 CPU, 1 MB DRAM, Ethernet only (no SCSI), 4x serial
MVME147-022: 68030 CPU, 2 MB DRAM, Ethernet only, extended serial I/O
MVME147-030: 68030 CPU, 4 MB DRAM, full I/O complement, SCSI + Ethernet + parallel
MVME147-040: 68030 CPU, 8 MB DRAM, SCSI-2, Ethernet, battery-backed clock, industrial temp range
MVME147-050: 68030 CPU, 16 MB DRAM, SCSI-2, Ethernet, maximum memory configuration