Abaco Systems / VMIC VMIVME-7750-760 Pentium III Processor-Based VME Single Board Computer

The VMIVME-7750-760 is a single-slot, 6U VME Eurocard single board computer built around an Intel Pentium III processor running at up to 1.26 GHz. Designed for demanding industrial and embedded control applications, this unit integrates VMEbus mastering and slave capabilities with dual Ethernet controllers, multiple serial interfaces, and PMC expansion support, enabling seamless integration into complex distributed processing systems.

– Technical Specifications

Processor & Memory
• Intel Pentium III at up to 1.26 GHz with 256 KB–512 KB advanced transfer cache
• 133 MHz front-side bus; superscalar architecture with MMX™ technology and dynamic branch prediction
• Up to 512 MB PC133 SDRAM via single 144-pin SODIMM
• 32 KB non-volatile SRAM with power-interruption data retention

Storage & Graphics
• Up to 1 GB IDE CompactFlash via secondary IDE port; ATA-33/66/100 compatible with automatic mode detection
• Reprogrammable flash BIOS for system and video configuration
• Integrated Intel 815E chipset AGP graphics adapter with 4 MB external synchronous DRAM
• Single-view display support up to 1,600 × 1,200 × 256 colors

VMEbus Interface
• VME Specification Rev. C.1 compliant with Tundra Universe IIB bus interface chip
• DTB Master/Slave: BLT32/BLT64, A32/D32, A24/D32, A16/D32 transfers
• Programmable arbiter (SGL, PRI, RRS), requester (BR, ROR, RWD, BCAP), and interrupt handler (IRQ 1–7)
• Four 32-bit mailboxes for interprocessor communication
• System controller capable of Slot 1 operation or peripheral CPU mode

Connectivity
• Dual Ethernet controllers (Intel 82559 and ICH2): 10BaseT and 100BaseTX with remote boot support (NetWare, TCP/IP, RPL)
• Two 16550-compatible serial ports at up to 115 Kbaud with 16-byte FIFO
• Dual USB hub host controller with isochronous and asynchronous data transfer
• PMC expansion site: IEEE P1386 compliant, 5V signaling, 32-bit PCI at 33 MHz maximum
• Primary IDE and floppy support; PS/2 keyboard/mouse via combined connector

Timers & Control
• Two 16-bit and two 32-bit general-purpose timers
• Software-programmable watchdog timer with reset capability

– Key Features

• Passive cooling for fanless operation in thermally constrained environments
• NetWare, TCP/IP, and RPL protocol support for network boot scenarios
• Y-adapter cable included for PS/2 peripherals; micro-DB-9 to DB-9 serial adapters required

– Typical Applications

Real-time process control, distributed VME system architectures, embedded telecommunications infrastructure, and data acquisition platforms requiring Intel x86 processing with industrial-grade VMEbus integration.

– Compatibility & Integration

Complies with VME Specification Rev. C.1, IEEE P1386 PMC standard, and ATA storage protocols. Operates as system controller or peripheral in mixed-vendor VME environments with programmatic interrupt and arbitration control.