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Diffstat (limited to 'tests/sat/ram_memory.v')
| -rw-r--r-- | tests/sat/ram_memory.v | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/sat/ram_memory.v b/tests/sat/ram_memory.v new file mode 100644 index 000000000..053ef206c --- /dev/null +++ b/tests/sat/ram_memory.v @@ -0,0 +1,37 @@ +module ram_memory( + input clk, + input [11:0] addr, + input [7:0] data_in, + input we, + output reg [7:0] data_out +); + + reg [7:0] store[0:4095] /* verilator public_flat */; + + initial + begin + store[0] <= 8'b11100001; // MOV DS,2 + store[1] <= 8'b00000010; // + store[2] <= 8'b01010100; // LOAD R1,[R0] + store[3] <= 8'b00110001; // INC R1 + store[4] <= 8'b00110001; // INC R1 + store[5] <= 8'b01100001; // STORE [R0],R1 + store[6] <= 8'b11010001; // OUT [0],R1 + store[7] <= 8'b00000000; // + store[8] <= 8'b00110001; // INC R1 + store[9] <= 8'b10100001; // CALL 0x100 + store[10] <= 8'b00000000; // + store[11] <= 8'b01111111; // HLT + + + store[256] <= 8'b11010001; // OUT [0],R1 + store[257] <= 8'b00000000; // + store[258] <= 8'b01111110; // RET + end + + always @(posedge clk) + if (we) + store[addr] <= data_in; + else + data_out <= store[addr]; +endmodule |