Gumstix Connex and Verdex (``connex``, ``verdex``)
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These machines model the Gumstix Connex and Verdex boards.
The Connex has a PXA255 CPU and the Verdex has a PXA270.

Implemented devices:

 * NOR flash
 * SMC91C111 ethernet
 * Interrupt controller
 * DMA
 * Timer
 * GPIO
 * MMC/SD card
 * Fast infra-red communications port (FIR)
 * LCD controller
 * Synchronous serial ports (SPI)
 * PCMCIA interface
 * I2C
 * I2S