Just three months after unveiling its proposed standard for PC/104-like self-stacking modules based on USB 2.0, Micro/sys has announced its second StackableUSB-based single-board computer (SBC). The SBC1496 implements a set of PC-compatible functions including graphics and networking, and can run Linux from an on-board… CompactFlash card, according to the company.

(Click for larger image of the SBC1496 StackableUSB SBC)

The SBC1496 is based on an ST Microelectronics STPC Atlas processor, clocked at either 120 or 133 MHz. The STPC Atlas integrates cache memory, hardware floating point math, digital I/O, and AT-compatible EIDE, interrupt, timer, and DMA controllers, according to Micro/sys. Up to 64MB of soldered-on SDRAM is available, as is 1MB of flash. An on-board CompactFlash socket provides a convenient “solid state disk” function.

In addition to these capabilities, the SBC1496's input/output functions include an SVGA graphics controller capable of driving both CRT monitors and LVDS TFT flat panels, at up to 1024 x 1024 resolution. Other peripheral interfaces include dual serial ports, keyboard/mouse controller, a USB 1.1 device port, and a 100Base-T Ethernet LAN controller.

Physically, the module is built in a PC/104-sized format (3.55 x 3.78 x 0.6 inches), although it does not implement PC/104's normal ISA or PCI expansion buses. Instead, it substitutes the company's innovative self-stacking USB 2.0 bus, known as “StackableUSB,” as its system expansion bus. Using this approach, the SBC can control up to five StackableUSB peripheral modules in a rugged, “bolt-together” arrangement, the company said.

For its operating system, the SBC1496 can boot Linux, DOS, Windows CE, VxWorks, and “other PC-compatible operating systems,” according to Micro/sys. Additionally, the company says it also offers a “ready-to-run firmware system” at no extra cost; this software package includes a “BIOS, board setup screens, and application download utilities, and can create a DOS-like execution environment immediately upon powerup.”

Availability

The SBC1496 appears to be available now, priced at $385 in single-piece quantities, with an industrial temperature (-40 to +85 degrees C) version available for a $50 premium. A development kit that includes cables, sample software, and “full documentation” is also available. Quantity discounts for OEMs (original equipment manufacturers) are available.

 
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