generic_shiftreg_fifo: assert almost_full_o one cycle in advance

6db1d955 · Tomasz Wlostowski · 9cc9792e · 6db1d955
Commit 6db1d955 authored Oct 13, 2016 by Tomasz Wlostowski
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generic_shiftreg_fifo.vhd modules/genrams/common/generic_shiftreg_fifo.vhd +1 -1

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--- a/modules/genrams/common/generic_shiftreg_fifo.vhd
+++ b/modules/genrams/common/generic_shiftreg_fifo.vhd
@@ -158,7 +158,7 @@ begin
  -- Detect when pointer is zero and maximum
  pointer_zero        <= '1' when pointer = 0                                else '0';
  pointer_full        <= '1' when pointer = g_size - 1                       else '0';
-  pointer_almost_full <= '1' when pointer_full = '1' or pointer = g_size - 2 else '0';
+  pointer_almost_full <= '1' when pointer_full = '1' or pointer = g_size -3 or pointer = g_size - 2 else '0';


  -- assign internal signals to outputs