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authorJan Tuomi <jan@jantuomi.fi>2024-12-29 21:05:56 +0200
committerJan Tuomi <jan@jantuomi.fi>2024-12-29 21:05:56 +0200
commitf1096f78f89e10b867b6ff7689d0a8777855b451 (patch)
treeb23af05d56a814e8f4ead16295e850f58af27214 /atk16_fpga/mem_fsm.v
parent5636fc7373b51306c8a3b8ba703831f67fdbf685 (diff)
Rename mem_fsm -> bram_fsm
Diffstat (limited to 'atk16_fpga/mem_fsm.v')
-rw-r--r--atk16_fpga/mem_fsm.v58
1 files changed, 0 insertions, 58 deletions
diff --git a/atk16_fpga/mem_fsm.v b/atk16_fpga/mem_fsm.v
deleted file mode 100644
index 051705e..0000000
--- a/atk16_fpga/mem_fsm.v
+++ /dev/null
@@ -1,58 +0,0 @@
-`default_nettype none
-
-`define ST_IDLE 3'd0
-`define ST_READ 3'd1
-`define ST_WRITE 3'd2
-
-module mem_fsm(
- input clk,
- input [15:0] addr,
- input [15:0] data_in,
- input read_en,
- input write_en,
-
- output wire [15:0] data_out,
- output reg done
-);
- reg wr, rd;
- reg [15:0] bram_addr;
- reg [2:0] state = 0;
- bram bram_inst(
- .clk(clk),
- .addr(bram_addr),
- .cs_n(1'd0),
- .wr_n(~wr),
- .rd_n(~rd),
- .bram_data_in(data_in),
- .bram_data_out(data_out)
- );
-
- always @(posedge clk) begin
- case (state)
- `ST_IDLE: begin
- done <= 0;
- if (~done && read_en) begin
- state <= `ST_READ;
- bram_addr <= addr;
- rd <= 1;
- wr <= 0;
- end
- else if (~done && write_en) begin
- state <= `ST_WRITE;
- bram_addr <= addr;
- rd <= 0;
- wr <= 1;
- end
- end
- `ST_READ: begin
- state <= `ST_IDLE;
- done <= 1;
- end
- `ST_WRITE: begin
- state <= `ST_IDLE;
- done <= 1;
- end
- endcase
- end
-
-endmodule