diff options
Diffstat (limited to 'rtl/gfx/gfx_fifo_overflow.sv')
| -rw-r--r-- | rtl/gfx/gfx_fifo_overflow.sv | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/rtl/gfx/gfx_fifo_overflow.sv b/rtl/gfx/gfx_fifo_overflow.sv deleted file mode 100644 index c9cb3de..0000000 --- a/rtl/gfx/gfx_fifo_overflow.sv +++ /dev/null @@ -1,34 +0,0 @@ -`include "gfx/gfx_defs.sv" - -module gfx_fifo_overflow -#(parameter DEPTH=0) -( - input logic clk, - rst_n, - - input logic down, - out_ready, - out_valid, - - output logic empty, - down_safe -); - - logic up; - logic[$clog2(DEPTH + 1) - 1:0] pending; - - assign up = out_ready && out_valid; - assign empty = pending == 0; - assign down_safe = up || pending < DEPTH - 1; - - always_ff @(posedge clk or negedge rst_n) - if (!rst_n) - pending <= 0; - else begin - if (up && !down) - pending <= pending - 1; - else if (!up && down) - pending <= pending + 1; - end - -endmodule |
