// parameter FPGA_VERSION = 32'h03930066; // trying just one histogram to watch utilization - with 4 was: Slice 15913 (80.98%), now Slice = 14318 (72.87%)
// parameter FPGA_VERSION = 32'h03930066; // trying just one histogram to watch utilization - with 4 was: Slice 15913 (80.98%), now Slice = 14318 (72.87%)
// parameter FPGA_VERSION = 32'h03930065; // (same rev) all met, using "old" (non-inverted) phase - OK (full phase range)
// parameter FPGA_VERSION = 32'h03930065; // (same rev) all met, using "old" (non-inverted) phase - OK (full phase range)
// parameter FPGA_VERSION = 32'h03930065; // switch phy_top.v (all met) - OK with inverted phase control (reduced phase range)
// parameter FPGA_VERSION = 32'h03930065; // switch phy_top.v (all met) - OK with inverted phase control (reduced phase range)