57 lines
2.9 KiB
Systemverilog
57 lines
2.9 KiB
Systemverilog
{% macro up_counter(field) -%}
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if({{field_logic.get_counter_incr_strobe(node)}}) begin // increment
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{%- if field_logic.counter_incrsaturates(node) %}
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if((({{node.width+1}})'(next_c) + {{field_logic.get_counter_incrvalue(node)}}) > {{field_logic.get_counter_incrsaturate_value(node)}}) begin // up-counter saturated
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next_c = {{field_logic.get_counter_incrsaturate_value(node)}};
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end else begin
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next_c = next_c + {{field_logic.get_counter_incrvalue(node)}};
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end
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{%- else %}
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field_combo.{{field_path}}.overflow = ((({{node.width+1}})'(next_c) + {{field_logic.get_counter_incrvalue(node)}}) > {{get_value(2**node.width - 1)}});
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next_c = next_c + {{field_logic.get_counter_incrvalue(node)}};
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{%- endif %}
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load_next_c = '1;
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{%- if not field_logic.counter_incrsaturates(node) %}
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end else begin
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field_combo.{{field_path}}.overflow = '0;
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{%- endif %}
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end
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field_combo.{{field_path}}.incrthreshold = (field_storage.{{field_path}} >= {{field_logic.get_counter_incrthreshold_value(node)}});
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{%- if field_logic.counter_incrsaturates(node) %}
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field_combo.{{field_path}}.incrsaturate = (field_storage.{{field_path}} >= {{field_logic.get_counter_incrsaturate_value(node)}});
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if(next_c > {{field_logic.get_counter_incrsaturate_value(node)}}) begin
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next_c = {{field_logic.get_counter_incrsaturate_value(node)}};
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load_next_c = '1;
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end
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{%- endif %}
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{%- endmacro %}
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{% macro down_counter(field) -%}
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if({{field_logic.get_counter_decr_strobe(node)}}) begin // decrement
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{%- if field_logic.counter_decrsaturates(node) %}
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if(({{node.width+1}})'(next_c) < ({{field_logic.get_counter_decrvalue(node)}} + {{field_logic.get_counter_decrsaturate_value(node)}})) begin // down-counter saturated
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next_c = {{field_logic.get_counter_decrsaturate_value(node)}};
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end else begin
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next_c = next_c - {{field_logic.get_counter_decrvalue(node)}};
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end
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{%- else %}
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field_combo.{{field_path}}.underflow = (next_c < ({{field_logic.get_counter_decrvalue(node)}}));
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next_c = next_c - {{field_logic.get_counter_decrvalue(node)}};
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{%- endif %}
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load_next_c = '1;
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{%- if not field_logic.counter_decrsaturates(node) %}
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end else begin
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field_combo.{{field_path}}.underflow = '0;
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{%- endif %}
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end
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field_combo.{{field_path}}.decrthreshold = (field_storage.{{field_path}} <= {{field_logic.get_counter_decrthreshold_value(node)}});
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{%- if field_logic.counter_decrsaturates(node) %}
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field_combo.{{field_path}}.decrsaturate = (field_storage.{{field_path}} <= {{field_logic.get_counter_decrsaturate_value(node)}});
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if(next_c < {{field_logic.get_counter_decrsaturate_value(node)}}) begin
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next_c = {{field_logic.get_counter_decrsaturate_value(node)}};
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load_next_c = '1;
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end
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{%- endif %}
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{%- endmacro %}
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