-Set BG block boundaries to 176 while using a RAM range of 128 words;

-Also set BG gap size to 256-176.

applications/apertif/designs/apertif_unb1_fn_bf_emu/src/vhdl/apertif_unb1_fn_bf_emu.vhd

@@ -126,8 +126,9 @@ ARCHITECTURE str OF apertif_unb1_fn_bf_emu IS
   SIGNAL pout_wdi                   : STD_LOGIC;
 
   -- Block generator
-  CONSTANT c_bg_block_size          : NATURAL := 2*64; -- 2 interleaved streams
-  CONSTANT c_bg_gapsize             : NATURAL := 0;
+  CONSTANT c_bg_block_size          : NATURAL := 176;    -- Note: our block boundaries (176) are different from the functional block size (128)
+  CONSTANT c_bg_mem_high_addr       : NATURAL := 2*64-1; -- 2 interleaved streams.
+  CONSTANT c_bg_gapsize             : NATURAL := 256-176;
   CONSTANT c_bg_blocks_per_sync     : NATURAL := 781250;
   CONSTANT c_bg_ctrl                : t_diag_block_gen := (sel_a_b(g_sim, '1', '0'), -- enable: On by default in simulation; MM enable required on hardware.
                                                            sel_a_b(g_sim, '1', '0'), -- enable_sync        
@@ -135,7 +136,7 @@ ARCHITECTURE str OF apertif_unb1_fn_bf_emu IS
                                                           TO_UVEC(c_bg_blocks_per_sync, c_diag_bg_blocks_per_sync_w),
                                                           TO_UVEC(        c_bg_gapsize, c_diag_bg_gapsize_w),
                                                           TO_UVEC(                   0, c_diag_bg_mem_low_adrs_w),
-                                                          TO_UVEC(   c_bg_block_size-1, c_diag_bg_mem_high_adrs_w),
+                                                          TO_UVEC(c_bg_mem_high_addr-1, c_diag_bg_mem_high_adrs_w),
                                                           TO_UVEC(                   0, c_diag_bg_bsn_init_w));
   -- Interface: 10GbE
   CONSTANT c_nof_10GbE_offload_streams : NATURAL := 1;