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| author | Andrew Zonenberg <azonenberg@drawersteak.com> | 2017-08-07 20:42:19 -0700 |
|---|---|---|
| committer | Andrew Zonenberg <azonenberg@drawersteak.com> | 2017-08-14 10:45:40 -0700 |
| commit | 0a6c702c41154e15046ea9bcc1568e5250da7299 (patch) | |
| tree | fce4766667bf3c68a0ac2d17abdf272f6de48bd7 /techlibs | |
| parent | 9f3dc59ffe5f585a55ee5a9e4ab7781c3e600513 (diff) | |
| download | yosys-0a6c702c41154e15046ea9bcc1568e5250da7299.tar.gz yosys-0a6c702c41154e15046ea9bcc1568e5250da7299.tar.bz2 yosys-0a6c702c41154e15046ea9bcc1568e5250da7299.zip | |
Changed LEVEL resets for GP_COUNTx to be properly synthesizeable
Diffstat (limited to 'techlibs')
| -rw-r--r-- | techlibs/greenpak4/cells_sim_digital.v | 108 |
1 files changed, 60 insertions, 48 deletions
diff --git a/techlibs/greenpak4/cells_sim_digital.v b/techlibs/greenpak4/cells_sim_digital.v index fc481975c..30fbef9f2 100644 --- a/techlibs/greenpak4/cells_sim_digital.v +++ b/techlibs/greenpak4/cells_sim_digital.v @@ -57,7 +57,7 @@ module GP_COUNT14(input CLK, input wire RST, output reg OUT); case(RESET_MODE) "RISING": begin - always @(posedge CLK or posedge RST) begin + always @(posedge CLK, posedge RST) begin count <= count - 1'd1; if(count == 0) count <= COUNT_TO; @@ -68,7 +68,7 @@ module GP_COUNT14(input CLK, input wire RST, output reg OUT); end "FALLING": begin - always @(posedge CLK or negedge RST) begin + always @(posedge CLK, negedge RST) begin count <= count - 1'd1; if(count == 0) count <= COUNT_TO; @@ -86,13 +86,15 @@ module GP_COUNT14(input CLK, input wire RST, output reg OUT); end "LEVEL": begin - always @(posedge CLK or posedge RST) begin - count <= count - 1'd1; - if(count == 0) - count <= COUNT_TO; - + always @(posedge CLK, posedge RST) begin if(RST) count <= 0; + + else begin + count <= count - 1'd1; + if(count == 0) + count <= COUNT_TO; + end end end @@ -141,7 +143,7 @@ module GP_COUNT14_ADV(input CLK, input RST, output reg OUT, case(RESET_MODE) "RISING": begin - always @(posedge CLK or posedge RST) begin + always @(posedge CLK, posedge RST) begin //Main counter if(KEEP) begin @@ -169,7 +171,7 @@ module GP_COUNT14_ADV(input CLK, input RST, output reg OUT, end "FALLING": begin - always @(posedge CLK or negedge RST) begin + always @(posedge CLK, negedge RST) begin //Main counter if(KEEP) begin @@ -204,21 +206,7 @@ module GP_COUNT14_ADV(input CLK, input RST, output reg OUT, end "LEVEL": begin - always @(posedge CLK or posedge RST) begin - - //Main counter - if(KEEP) begin - end - else if(UP) - count <= count + 1'd1; - else - count <= count - 1'd1; - - //Wrapping - if(count == 0 && !UP) - count <= COUNT_TO; - if(count == 14'h3fff && UP) - count <= COUNT_TO; + always @(posedge CLK, posedge RST) begin //Resets if(RST) begin @@ -228,6 +216,24 @@ module GP_COUNT14_ADV(input CLK, input RST, output reg OUT, count <= COUNT_TO; end + else begin + + //Main counter + if(KEEP) begin + end + else if(UP) + count <= count + 1'd1; + else + count <= count - 1'd1; + + //Wrapping + if(count == 0 && !UP) + count <= COUNT_TO; + if(count == 14'h3fff && UP) + count <= COUNT_TO; + + end + end end @@ -276,7 +282,7 @@ module GP_COUNT8_ADV(input CLK, input RST, output reg OUT, case(RESET_MODE) "RISING": begin - always @(posedge CLK or posedge RST) begin + always @(posedge CLK, posedge RST) begin //Main counter if(KEEP) begin @@ -304,7 +310,7 @@ module GP_COUNT8_ADV(input CLK, input RST, output reg OUT, end "FALLING": begin - always @(posedge CLK or negedge RST) begin + always @(posedge CLK, negedge RST) begin //Main counter if(KEEP) begin @@ -339,21 +345,7 @@ module GP_COUNT8_ADV(input CLK, input RST, output reg OUT, end "LEVEL": begin - always @(posedge CLK or posedge RST) begin - - //Main counter - if(KEEP) begin - end - else if(UP) - count <= count + 1'd1; - else - count <= count - 1'd1; - - //Wrapping - if(count == 0 && !UP) - count <= COUNT_TO; - if(count == 8'hff && UP) - count <= COUNT_TO; + always @(posedge CLK, posedge RST) begin //Resets if(RST) begin @@ -363,6 +355,24 @@ module GP_COUNT8_ADV(input CLK, input RST, output reg OUT, count <= COUNT_TO; end + else begin + + //Main counter + if(KEEP) begin + end + else if(UP) + count <= count + 1'd1; + else + count <= count - 1'd1; + + //Wrapping + if(count == 0 && !UP) + count <= COUNT_TO; + if(count == 8'hff && UP) + count <= COUNT_TO; + + end + end end @@ -410,7 +420,7 @@ module GP_COUNT8( case(RESET_MODE) "RISING": begin - always @(posedge CLK or posedge RST) begin + always @(posedge CLK, posedge RST) begin count <= count - 1'd1; if(count == 0) count <= COUNT_TO; @@ -421,7 +431,7 @@ module GP_COUNT8( end "FALLING": begin - always @(posedge CLK or negedge RST) begin + always @(posedge CLK, negedge RST) begin count <= count - 1'd1; if(count == 0) count <= COUNT_TO; @@ -439,13 +449,15 @@ module GP_COUNT8( end "LEVEL": begin - always @(posedge CLK or posedge RST) begin - count <= count - 1'd1; - if(count == 0) - count <= COUNT_TO; - + always @(posedge CLK, posedge RST) begin if(RST) count <= 0; + + else begin + count <= count - 1'd1; + if(count == 0) + count <= COUNT_TO; + end end end |