beginner help with understanding altera project workflow - DE2 board

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I am new to development with the DE2 board and to developing apps for FPGA in general.

With altera i am having trouble getting the big picture ... heres what i understand right now. would appreciate if someone can fill in the blanks / correct it :)

1. altera 2 ide - ???

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This question is unclear... It could have been:

1. Altera DE2 - altera development and education board

2. Quartus - software environment for designing, analyzing, simulating, synthezing, mapping and downloading designs to an altera FPGA.

3. ...

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2. sopc builder - to build a system description (what all components, their addresses, properties etc.)

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SOPC Builder is a tool in the Quartus environment for defining, composing and generating bus-based architectures. Its major use is for designing Nios II processor based systems.

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3. NIOS IDE - to actually code the software processor

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Software environment for developing software on Nios based processor systems.