For more information about the HP 9816<p><a href="https://www.hpmuseum.net/display_item.php?hw=4" rel="nofollow">https://www.hpmuseum.net/display_item.php?hw=4</a><p>There is (was?) an FPGA port in progress...<p><a href="https://sites.google.com/site/olivier2smet2/hp_projects/hp98x6/fpga-hp98x6" rel="nofollow">https://sites.google.com/site/olivier2smet2/hp_projects/hp98...</a>