Diamond Systems (Mountain View, CA) has announced Neptune, an ultra-high-integration EPIC form factor single board computer that combines state-of-the-art CPU and I/O technology with Diamond Systems' high accuracy data acquisition circuitry on a single board. Neptune offers up to 2GB of DDR/DDR2 DRAM via SODIMM and provides a PC/104-Plus interface for expansion, supporting both PCI and ISA. Software support is provided for Windows XP, Linux, Windows CE, and Diamond Systems' Universal Driver programming software for the data acquisition circuitry.

Neptune has a front side bus (FSB) ranging from 400MHz to 667MHz, four USB ports, and S-ATA hard drive interface, depending on the CPU module. The dual graphics engines support both 2D and 3D graphics on dual independent CRT and LVDS displays. Neptune provides both 10/100BaseT and Gigabit Ethernet. Hard drive support is through CompactFlash, rugged IDE FlashDisk, and USB bus interfaces. Six RS-232 serial ports (including four with RS-422/485), AC '97 audio, and legacy keyboard, mouse, floppy, parallel, and IDE hard drive interfaces are also provided.

Neptune's optional integrated data acquisition has 32 single ended or 16 differential analog inputs with 16-bit resolution and 250KHz sample rate, four 32-bit analog inputs with 100KHz waveform output capability, autocalibration of the analog circuits, eight optically isolated digital inputs, eight optically isolated digital outputs, 24 programmable I/O lines, and two counters/timers. It supports both interrupt and DMA A/D transfers and uses an enhanced 1,024-sample FIFO with programmable threshold.

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