DSP Software Tools [download from Metrowerks]
Suite56 Assembler + Linker + Simulator

EEPROM + EPLD Programmer
Altera ByteBlaster & USB Blaster
Xeltek SuperPro 3000U

Schematic and Printed Circuit Board Tools [download from Altium/Protel]
Altium/Protel Designer (DXP)

PCI Interface Tools 
AMCC S5920 PCI Interface Devices

Operating System
Fedora Linux (formerly RedHat)

Reference Documentation
DSP56300 Family Manual
DSP56303 User Manual
DSP56300 Assembler manual
DSP56300 Linker manual 
DSP56300 Simulator manual