From 4f03acd07d5239f496ee6c95f899976e9acf53f1 Mon Sep 17 00:00:00 2001 From: Eric Kooistra <kooistra@astron.nl> Date: Thu, 1 Dec 2022 16:42:23 +0100 Subject: [PATCH] Correct c_diag_bg_gapsize_w to 31 bit to fit NATURAL range. --- libraries/base/diag/src/vhdl/diag_pkg.vhd | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libraries/base/diag/src/vhdl/diag_pkg.vhd b/libraries/base/diag/src/vhdl/diag_pkg.vhd index 474fa26827..9758197ca6 100644 --- a/libraries/base/diag/src/vhdl/diag_pkg.vhd +++ b/libraries/base/diag/src/vhdl/diag_pkg.vhd @@ -106,10 +106,12 @@ PACKAGE diag_pkg IS CONSTANT c_diag_bg_reg_adr_w : NATURAL := ceil_log2(c_diag_bg_reg_nof_dat); CONSTANT c_diag_bg_reg_adr_span : NATURAL := 2**c_diag_bg_reg_adr_w; + -- Use c_diag_bg_gapsize_w = 31 to fit gapsize in 31 bit NATURAL. At 200 MHz + -- clock this allows a gap of 2**31 / 200e6 = 10.7 s CONSTANT c_diag_bg_mode_w : NATURAL := 8; CONSTANT c_diag_bg_samples_per_packet_w : NATURAL := 24; CONSTANT c_diag_bg_blocks_per_sync_w : NATURAL := 24; - CONSTANT c_diag_bg_gapsize_w : NATURAL := 32; + CONSTANT c_diag_bg_gapsize_w : NATURAL := 31; CONSTANT c_diag_bg_mem_adrs_w : NATURAL := 24; CONSTANT c_diag_bg_mem_low_adrs_w : NATURAL := c_diag_bg_mem_adrs_w; CONSTANT c_diag_bg_mem_high_adrs_w : NATURAL := c_diag_bg_mem_adrs_w; -- GitLab