| module example; |
| |
| reg [3:0] mem [0:7]; |
| reg [3:0] addr; |
| wire [3:0] m0 = mem[0]; |
| wire [3:0] m1 = mem[1]; |
| wire [3:0] m2 = mem[2]; |
| wire [3:0] m3 = mem[3]; |
| wire [3:0] m4 = mem[4]; |
| wire [3:0] m5 = mem[5]; |
| wire [3:0] m6 = mem[6]; |
| wire [3:0] m7 = mem[7]; |
| wire [3:0] maddr = mem[addr]; |
| |
| initial begin |
| $write( " " ); |
| $display( |
| "time addr maddr m0 m1 m2 m3 m4 m5 m6 m7" ); |
| $write( " " ); |
| $display( |
| "---- ---- ----- ---- ---- ---- ---- ---- ---- ---- ----" ); |
| $monitor( "%T %b %b %b %b %b %b %b %b %b %b", |
| $time, addr, maddr, |
| m0, m1, m2, m3, m4, m5, m6, m7 ); |
| mem[0] = 8; |
| mem[1] = 1; |
| mem[2] = 2; |
| mem[3] = 3; |
| mem[4] = 4; |
| mem[5] = 5; |
| mem[6] = 6; |
| mem[7] = 7; |
| addr = 0; // 0 |
| #100 addr = 1; // 100 |
| #100 addr = 2; // 200 |
| #100 addr = 3; // 300 |
| #100 addr = 4; // 400 |
| #100 addr = 5; // 500 |
| #100 addr = 6; // 600 |
| #100 addr = 7; // 700 |
| #100 addr = 8; // 800 |
| #100 addr = 4'b001x; // 900 |
| #100 addr = 4'b01x0; // 1000 |
| #100 addr = 4'b0x01; // 1100 |
| #100 addr = 0; // 1200 |
| #100 mem[addr] <= 9; // 1300 |
| #100 addr = 3; // 1400 |
| #100 mem[addr] <= 10; // 1500 |
| #100 addr = 6; // 1600 |
| #100 mem[addr] <= 11; // 1700 |
| #100 addr = 8; // 1800 |
| #100 mem[addr] <= 12; // 1900 |
| #100 addr = 4'b010x; // 2000 |
| #100 mem[addr] <= 13; // 2100 |
| #100 addr = 4'b00x1; // 2200 |
| #100 mem[addr] <= 14; // 2300 |
| #100 addr = 4'b0x10; // 2400 |
| #100 mem[addr] <= 15; // 2500 |
| #100 addr = 4'bxxxx; // 2600 |
| #100 mem[addr] <= 0; // 2700 |
| #100 $display( "Finish at time %T", $time ); |
| end |
| |
| endmodule |
