I. Basic Information

Model: MVME162-211

Brand: Motorola / Emerson (Schneider)

Form: 6U dual high VME64 SBC

CPU: MC68040 @ 25 MHz (✅ with FPU, MMU, 8KB Cache)

Key Features: 4MB DRAM, 128KB SRAM, 1MB Flash, 2×IP, 4×Serial Port, ✅SCSI, ❌Ethernet

II. Hardware Specifications (Compared with 210)

1) Processor (Key Differences between 211 and 210)

210: MC68LC040 (❌ No FPU, only integer operations)

211: MC68040 (✅ FPU, capable of floating-point operations), remaining items are the same (25 MHz, 8KB Cache, MMU)

2) Memory (Same as 210)

DRAM: 4MB (parity check)

SRAM: 128KB (battery backup)

Flash: 1MB

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

3) I/O (Same as 210)

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

Ethernet: ❌ None

Serial Port: 4×RS-232

SCSI: ✅ Narrow SCSI 50-pin + DMA

IP Slot: 2×IndustryPack

4) Electrical / Environmental

Power Supply: +5V @ 3.5A

Temperature: 0℃ ~ +70℃

Size: 233×160mm

III. Quick Identification of 210 / 211 / 212 / 213 Table

Model CPU FPU DRAM SCSI Network Port IP Slot Currency of Use

210 LC040 ❌ 4MB ✅ ❌ 2 Mainstream

211 040 ✅ 4MB ✅ ❌ 2 Seldom / Engineering Version

212 LC040 ❌ 4MB ❌ ✅ 2 Mainstream

213 LC040 ❌ 4MB ✅ ✅ 2 Mainstream Top-Grade

Four. Features of 211

210's FPU version: The only difference is the presence of FPU (040), suitable for control algorithms requiring floating-point operations

Rare and limited supply: Not as widely adopted as 210/212/213, mostly found in early projects / specific equipment as original components

Compatible with 210: Mechanical / Electrical pins are consistent, can be directly replaced with 210, software needs to be adapted for FPU

Five. Typical Applications

Need floating-point operations + local storage: SCSI interface for hard drives, running embedded OS / algorithms requiring floating-point

Upgrade 210 (with FPU): The old 210 without FPU is insufficient, directly replace with 211

Replacement for old equipment: Original 211 equipment with faults