I. Basic Information

Model: MVME162-12

Brand: Motorola / Emerson

Form: 6U VME64 single-board computer (SBC)

CPU: MC68LC040 @ 25 MHz (no FPU, has MMU, 8KB Cache)

Core Differences: No FPU, no network interface, 4MB, with SCSI (10 without SCSI, 043 has network interface)

II. Core Hardware Specifications

1) Processor

MC68LC040, 25 MHz

❌ No FPU (no floating point); ✅ MMU + 8KB unified cache

Performance: Approximately 15 MIPS, only integer operations

2) Memory

DRAM: 4 MB (parity)

SRAM: 512 KB, battery backup

Flash: 1 MB

NVRAM/RTC: 8 KB + real-time clock, battery backup

3) I/O Interfaces (Key point: with SCSI, no network interface)

VMEbus: VME64 A32/D32, master/slave, DMA, system controller

Ethernet: ❌ No onboard network (depends on IP network card for expansion)

Serial Port: 2×RS-232 (Console + configurable)

SCSI: ✅ With SCSI (single channel, with DMA)

IP Slot: 4×IndustryPack (IP) expansion slots

Parallel Port: 8-bit bidirectional

4) Electrical / Environmental

Power Supply: +5 V @ 3.5 A

Operating Temperature: 0 ℃ ~ +70 ℃

Size: 6U VME (233 × 160 mm)

III. Minimal Comparison of MVME162-10 / 12 / 043 (Plain Text)

10: LC040/25 / no FPU/4MB/no network/no SCSI → Basic

12: LC040/25 / no FPU/4MB/no network/with SCSI → 10 + SCSI

043: LC040/25 / no FPU/8MB/single 10M network/no SCSI → 10 + memory + network

IV. Functional Features

Direct upgrade of 10: Add SCSI storage interface on the basis of 10, suitable for systems with hard drives / CD-ROMs

No floating point, no network interface: Same as 10, cannot run floating point, no onboard network

Basic configuration sufficient: 4MB memory, dual serial ports, 4 IP slots, expandable network ports / analog

Complete power-off protection: SRAM/NVRAM/RTC battery backup

V. Typical Applications

Basic control requiring local storage: Use SCSI for hard drives / CD-ROMs, no network, no floating point

MVME162-10 system upgrade: Replace the old 10 with 12, retain architecture, add SCSI

Industrial equipment with local logs / data recording: No network required, store data via SCSI