From: eLinux.org

Mini LA

Mini LA is a project of simple and cheap logic analyzer designed for amateur and semi-professional work.

Features:

• Up to 32 channels
• 128 Kb of memory for each channel
• Sampling rate up to 100MHz (timebase in 1-2-5 sequence)
• External clock input
• Input levels compatible with 3.3V and 5V logic
• Selectable pretrigger/posttrigger buffer size in 8K steps
• 16 bits wide trigger (0, 1, don't care)
• Programmable min. trigger-event width (1-16)
• Programmable trigger-events counter (1-16)
• External trigger input
• Communicating via LPT port (EPP mode support) or USB
• Documentation and source codes released under GNU GPL
• Mini LAParts