rc: Add gtkwave view save
rc: Fix tb.py clk_period assignment
rc: Add make uber target
rc/dcf_sync: Step clk_freq down for simulation
rc/top_level: Use dcf_sync_bits entity
rc: Silence gtkwave output
rc: Print 'make view' command
rc/dcf_sync: Lab2 development
rc/dcf_sync: Remove unused signals and constants
rc/dcf_sync: Fix comments
rc/dcf_sync: Define constants for time limits