E‐14HardwareReferenceManual www.picocomputing.com PicoComputing,Inc.
8
PowerPC™Processor
PPC405x3ProcessorIntroduction:
FPGAsarerenownedfortheirabilitytoprocessparallellogic,buttheytypicallyhaveahardtime
emulatingahighperformanceprocessor.TogetthebestofbothworldstheVirtex‐4™featuresan
embeddedPowerPCProcessor.SincetheprocessorsharesthesamedieastheFPGAitseamlessly
interfaceswiththeFPGAfabric.
AnewfeatureoftheVitex‐4FPGAistheadditionofanauxiliaryprocessorinterface.TheAPUisthe
highestspeedinterfacebetweenthePower‐PC™processorandtheFPGAfabric.Uptofourcustom
instructionsmaybeimplementedintheFPGA,whichareaccessiblefromthePower‐PC™.
BoardsupportpackagesarecurrentlyavailableforμC/OS,LinuxandIntegrity.Boardsupportsource
codeisavailableopensourceundertheGPL.