VMIC VMIVME‑7740 VMEbus SBC CPU Unit

Module Feature

VMIVME‑7740 is 6U Eurocard VME64 single‑board computer manufactured by VMIC (acquired by GE). Adopts Intel Pentium‑III PGA370 CPU, passive heatsink without fan, supports up to 512MB SDRAM. Equipped with one PMC expansion site for adding custom I/O mezzanine cards. It integrates dual 10/100 Ethernet, SVGA video, serial ports, USB, PS/2 keyboard‑mouse interface, CompactFlash storage. Supports VMEbus master/slave/system‑controller function with hardware byte‑swap for big/little‑endian conversion. Compatible with Windows, Linux, VxWorks, QNX real‑time OS. Widely used in legacy industrial control, test‑measurement and military VME chassis systems.

Working principle

Runs full PC‑AT compatible BIOS and operating system. On‑board Universe‑II PCI‑to‑VME bridge communicates with other VME modules over backplane P1/P2 connectors. Application software executes user logic, collects data from VME I/O cards, communicates over Ethernet to HMI or host. Watchdog timer provides system reset for embedded fail‑safe operation.

Onboard components

Pentium‑III CPU socket, SODIMM memory socket, PMC mezzanine connector, Universe‑II VME bridge chip, dual Ethernet controller, SVGA graphics chip, 32KB non‑volatile SRAM, real‑time clock with battery, VME P1/P2 backplane golden fingers, front‑panel I/O connectors, passive heat sink.

LED indicators

No dedicated status LED array. System status viewed via OS, BIOS POST codes or front‑panel debug output.

Hardware self‑diagnosis

Power‑on POST self‑test reports memory, Ethernet, VME‑bridge fault. Watchdog timeout triggers hardware reset. VME‑bus error timer captures bus access exceptions; diagnostic information read from register via driver software.

Programming software

Supported OS: Windows NT/2000, Linux, VxWorks, QNX, LynxOS. VMIC VME driver library for bus access and register configuration.

Electrical & Process Parameters

Model:VMIVME‑7740 Brand:VMIC (General Electric) Device type:6U VME64 Single‑Board Computer CPU:Intel Pentium‑III PGA370 Memory:Max 512MB SDRAM Storage:CompactFlash IDE Communication:2×10/100 Ethernet,2×RS232 serial,USB,SVGA,PS/2 Bus:VME64 A32/A24/D32/MBLT64, PMC expansion slot Power:Supplied from VME backplane Function:Embedded computing, VMEbus master/slave control for industrial & test‑system

Mechanical & Structure

Mounting:6U VME chassis slot mounting Protection class:IP20 (inside card cage) Housing:Standard 6U Eurocard PCB with front panel bracket, fan‑less passive cooling

Environmental

Operating temperature:-40℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:CE compliant Status:Obsolete legacy VME SBC, available as used / refurbished spare part

Installation

Insert card into 6U VME card cage. Ensure backplane P1/P2 fully seated. Set hardware jumpers for CMOS battery, BIOS mode, watchdog. Install memory, CompactFlash and PMC mezzanine if used. Boot OS and load VMIC VME driver software.

Interface

VMEbus P1/P2 backplane connector; front‑panel:RJ45 Ethernet×2, SVGA D‑Sub, serial COM, USB, PS/2 keyboard‑mouse.

Diagnostic

No boot:Battery failure, bad SDRAM, CompactFlash missing / damaged. VME communication fail:Jumper misconfiguration, backplane fault or Universe‑II bridge hardware damage. Ethernet not detected:PHY hardware fault or driver mismatch.

Product Brief

VMIC VMIVME‑7740 fan‑less Pentium‑III VME64 single‑board computer, 6U Eurocard form‑factor with PMC expansion, legacy embedded CPU for VME‑bus industrial and test‑measurement systems.