diff options
| author | kryptoish <krish_thakur7@icloud.com> | 2024-12-03 16:58:07 -0800 |
|---|---|---|
| committer | kryptoish <krish_thakur7@icloud.com> | 2024-12-03 16:58:07 -0800 |
| commit | f665f0ff80397ab10dbbea6cfcb302bb131f9719 (patch) | |
| tree | 131ba7ab978dd127992111d354e8460c61fbc626 /regfile.sv | |
added files
Diffstat (limited to '')
| -rw-r--r-- | regfile.sv | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/regfile.sv b/regfile.sv new file mode 100644 index 0000000..8237b26 --- /dev/null +++ b/regfile.sv @@ -0,0 +1,45 @@ +module regfile(data_in,writenum,write,readnum,clk,data_out);
+ input [15:0] data_in;
+ input [2:0] writenum, readnum;
+ input write, clk;
+ output reg [15:0] data_out;
+
+ // This file is made explicit and long for easy readability
+ // e.g
+ // The always_comb can have only one case (readnum to data_out change)
+ // The always_ff in turn will only have one if and one case (write and writenum to R0-R7)
+ // make file more efficient
+
+ reg [15:0] R0, R1, R2, R3, R4, R5, R6, R7;
+
+ always_comb begin
+ //read num for data_out
+ case (readnum)
+ 3'b000: data_out = R0;
+ 3'b001: data_out = R1;
+ 3'b010: data_out = R2;
+ 3'b011: data_out = R3;
+ 3'b100: data_out = R4;
+ 3'b101: data_out = R5;
+ 3'b110: data_out = R6;
+ 3'b111: data_out = R7;
+ endcase
+ end
+
+ always_ff @(posedge clk) begin
+ if (write) begin //only load into register if write is on = 1
+ case (writenum)
+ // Check load select and put data_in into R0-7 depending
+ 3'b000: R0 <= data_in;
+ 3'b001: R1 <= data_in;
+ 3'b010: R2 <= data_in;
+ 3'b011: R3 <= data_in;
+ 3'b100: R4 <= data_in;
+ 3'b101: R5 <= data_in;
+ 3'b110: R6 <= data_in;
+ 3'b111: R7 <= data_in;
+ endcase
+ end
+ end
+
+endmodule
\ No newline at end of file |