diff --git a/.gitignore b/.gitignore
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+# A gitignore for Altera Quartus II that tries to ignore almost all of the
+# automatically Quartus-generated files. This primarily leaves the project,
+# settings, source, and constraint files to be added. The files ignored do not
+# include the bulk of the MegaFunction Wizard generated files which enables
+# a cloned repository to be used (usually) immediately without regenerating
+# Altera IP blocks.
+
+# Need to keep all HDL files and timing constraint files
+# *.vhd
+# *.v
+# *.sdc
+
+# ignore Quartus II generated folders
+*_sim
+db
+greybox_tmp
+incremental_db
+simulation
+testbench
+timing
+
+# ignore Quartus II generated files
+*_generation_script*
+*_inst.vhd
+*.bak
+*.cmp
+*.done
+*.eqn
+*.hex
+*.html
+*.jdi
+*.jpg
+*.mif
+*.pin
+*.pof
+*.ptf.*
+*.qar
+*.qarlog
+*.qws
+*.rpt
+*.smsg
+*.sof
+*.sopc_builder
+*.summary
+*.tcl
+*.txt # Explicitly add any text files used
+*~
+*example*
+*sopc_*
+PLLJ_PLLSPE_INFO.txt # The generated PLL specification file