Why is my instruction not loading

[henryqiu]

// We can also use $random to generate random values for testing
RS1 = 1; RD1 = -100;
RS2 = 2; RD2 = 200;
RD = 3;
`RF_PATH.mem[RS1] = RD1;
`RF_PATH.mem[RS2] = RD2;
SHAMT = 5'd20;
INST_ADDR = 14'h0000;

`IMEM_PATH.mem[INST_ADDR + 0] = {`FNC7_0, RS2, RS1, `FNC_ADD_SUB, 5'd3, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 1] = {`FNC7_1, RS2, RS1, `FNC_ADD_SUB, 5'd4, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 2] = {`FNC7_0, RS2, RS1, `FNC_SLL, 5'd5, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 3] = {`FNC7_0, RS2, RS1, `FNC_SLT, 5'd6, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 4] = {`FNC7_0, RS2, RS1, `FNC_SLTU, 5'd7, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 5] = {`FNC7_0, RS2, RS1, `FNC_XOR, 5'd8, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 6] = {`FNC7_0, RS2, RS1, `FNC_OR, 5'd9, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 7] = {`FNC7_0, RS2, RS1, `FNC_AND, 5'd10, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 8] = {`FNC7_0, RS2, RS1, `FNC_SRL_SRA, 5'd11, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 9] = {`FNC7_1, RS2, RS1, `FNC_SRL_SRA, 5'd12, `OPC_ARI_RTYPE};
`IMEM_PATH.mem[INST_ADDR + 10] = {`FNC7_0, SHAMT, RS1, `FNC_SLL, 5'd13, `OPC_ARI_ITYPE};
`IMEM_PATH.mem[INST_ADDR + 11] = {`FNC7_0, SHAMT, RS1, `FNC_SRL_SRA, 5'd14, `OPC_ARI_ITYPE};
`IMEM_PATH.mem[INST_ADDR + 12] = {`FNC7_1, SHAMT, RS1, `FNC_SRL_SRA, 5'd15, `OPC_ARI_ITYPE};

reset_cpu();

check_result_rf(5'd3, 32'h00000064, "R-Type ADD");
check_result_rf(5'd4, 32'hfffffed4, "R-Type SUB");
check_result_rf(5'd5, 32'hffff9c00, "R-Type SLL");
check_result_rf(5'd6, 32'h1, "R-Type SLT");
check_result_rf(5'd7, 32'h0, "R-Type SLTU");
check_result_rf(5'd8, 32'hffffff54, "R-Type XOR");
check_result_rf(5'd9, 32'hffffffdc, "R-Type OR");
check_result_rf(5'd10, 32'h00000088, "R-Type AND");
check_result_rf(5'd11, 32'h00ffffff, "R-Type SRL");
check_result_rf(5'd12, 32'hffffffff, "R-Type SRA");
check_result_rf(5'd13, 32'hf9c00000, "R-Type SLLI");
check_result_rf(5'd14, 32'h00000fff, "R-Type SRLI");
check_result_rf(5'd15, 32'hffffffff, "R-Type SRAI");

Everytime I run the testbench the first instruction works well but afterwards, the instructions stop loading for some reason. They are all manually written in by how the testbench works

 

[BradtheRad]

This moderator attempted to insert code tags in an effort to comply with forum rules (requesting it for code, reports, logs, etc.). However instead of saving the edited post, an error message came up saying 'Message too long, try shortening it.' In ten years I've never seen any such error. As a result I could not revise your post.

Your message does not appear overly long. Nevertheless does it contain an odd character which might affect the LFCR (line feed, carriage return) setting? Anything which causes your line endings to be misread?

What about the variables with different typefaces yet identical names? RS1? RD1?