Add a build target for hsm_ng, but cut the ModExpNG clock back to 90MHz.

Builds fail to meet timing at 180MHz, so I need to cut it back until it
can be made to work for everybody.

1 files changed, 1 insertions, 1 deletions

diff --git a/rtl/alpha_fmc_top.v b/rtl/alpha_fmc_top.v
index 09229b5..2206a89 100644
--- a/rtl/alpha_fmc_top.v
+++ b/rtl/alpha_fmc_top.v
@@ -72,7 +72,7 @@ module alpha_fmc_top
     wire sys_rst_n; // active-low system reset
     wire core_clk;  // high-speed core clock (45*N MHz)
 
-    alpha_clkmgr #(.CLK_CORE_MULT(4)) clkmgr
+    alpha_clkmgr #(.CLK_CORE_MULT(2)) clkmgr
     (
         .fmc_clk    (fmc_clk),