Sharp Zaurus SL-5500 (``collie``)
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This machine is a model of the Sharp Zaurus SL-5500, which was
a 1990s PDA based on the StrongARM SA1110.
Implemented devices:
* NOR flash
* Interrupt controller
* Timer
* RTC
* GPIO
* Peripheral Pin Controller (PPC)
* UARTs
* Synchronous Serial Ports (SSP)