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module ogfx_reg_fifo (
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module ogfx_reg_fifo (
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// OUTPUTs
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// OUTPUTs
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fifo_cnt_o, // Fifo counter
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fifo_cnt_o, // Fifo counter
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fifo_empty_cnt_o, // Fifo empty words counter
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fifo_data_o, // Read data output
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fifo_data_o, // Read data output
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fifo_done_evt_o, // Fifo has been emptied
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fifo_done_evt_o, // Fifo has been emptied
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fifo_empty_o, // Fifo is currentely empty
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fifo_empty_o, // Fifo is currentely empty
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fifo_full_o, // Fifo is currentely full
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fifo_full_o, // Fifo is currentely full
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fifo_ovfl_evt_o, // Fifo overflow event
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fifo_ovfl_evt_o, // Fifo overflow event
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);
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);
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// OUTPUTs
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// OUTPUTs
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//=========
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//=========
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output [3:0] fifo_cnt_o; // Fifo counter
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output [3:0] fifo_cnt_o; // Fifo counter
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output [3:0] fifo_empty_cnt_o; // Fifo empty word counter
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output [15:0] fifo_data_o; // Read data output
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output [15:0] fifo_data_o; // Read data output
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output fifo_done_evt_o; // Fifo has been emptied
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output fifo_done_evt_o; // Fifo has been emptied
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output fifo_empty_o; // Fifo is currentely empty
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output fifo_empty_o; // Fifo is currentely empty
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output fifo_full_o; // Fifo is currentely full
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output fifo_full_o; // Fifo is currentely full
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output fifo_ovfl_evt_o; // Fifo overflow event
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output fifo_ovfl_evt_o; // Fifo overflow event
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//============================================================================
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//============================================================================
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// 5) FIFO COUNTER
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// 5) FIFO COUNTER
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//============================================================================
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//============================================================================
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// Control signals
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// Control signals
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wire fifo_full_o = (fifo_cnt_o == FIFO_FULL);
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assign fifo_full_o = (fifo_cnt_o == FIFO_FULL);
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wire fifo_empty_o = (fifo_cnt_o == FIFO_EMPTY);
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assign fifo_empty_o = (fifo_cnt_o == FIFO_EMPTY);
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assign fifo_empty_cnt_o = (FIFO_FULL-fifo_cnt_o);
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wire fifo_push_int = fifo_push_i & !fifo_full_o;
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wire fifo_push_int = fifo_push_i & !fifo_full_o;
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wire fifo_pop_int = fifo_pop_i & !fifo_empty_o;
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wire fifo_pop_int = fifo_pop_i & !fifo_empty_o;
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// Events
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// Events
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assign fifo_done_evt_o = ~fifo_empty_o & (fifo_cnt_nxt == FIFO_EMPTY);
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assign fifo_done_evt_o = ~fifo_empty_o & (fifo_cnt_nxt == FIFO_EMPTY);
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