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Fixes #9

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Fixes #9

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138f237
Fully connect priority_encoder
olofk Oct 25, 2019
22a418e
Fix width mismatches in arbiter
olofk Oct 25, 2019
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4 changes: 2 additions & 2 deletions rtl/arbiter.v
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Original file line number Diff line number Diff line change
Expand Up @@ -97,12 +97,12 @@ always @* begin
grant_encoded_next = 0;
mask_next = mask_reg;

if (BLOCK == "REQUEST" && grant_reg & request) begin
if (BLOCK == "REQUEST" && |(grant_reg & request)) begin
// granted request still asserted; hold it
grant_valid_next = grant_valid_reg;
grant_next = grant_reg;
grant_encoded_next = grant_encoded_reg;
end else if (BLOCK == "ACKNOWLEDGE" && grant_valid && !(grant_reg & acknowledge)) begin
end else if (BLOCK == "ACKNOWLEDGE" && grant_valid && !(|(grant_reg & acknowledge))) begin
// granted request not yet acknowledged; hold it
grant_valid_next = grant_valid_reg;
grant_next = grant_reg;
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2 changes: 2 additions & 0 deletions rtl/priority_encoder.v
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@ generate
priority_encoder_inst1 (
.input_unencoded(input_unencoded[W2-1:0]),
.output_valid(valid1),
.output_unencoded(),
.output_encoded(out1)
);
priority_encoder #(
Expand All @@ -80,6 +81,7 @@ generate
priority_encoder_inst2 (
.input_unencoded({{W1-WIDTH{1'b0}}, input_unencoded[WIDTH-1:W2]}),
.output_valid(valid2),
.output_unencoded(),
.output_encoded(out2)
);
// multiplexer to select part
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