git.joshuawise.com / firearm.git / blame
| Commit | Line | Data |
|---|---|---|
| 45fa96c0 JW |
1 | module BusArbiter( |
| 2 | input [7:0] bus_req, | |
| 3 | output reg [7:0] bus_ack); | |
| 4 | ||
| 5 | always @(*) | |
| 6 | casez (bus_req) | |
| 7 | 8'b00000000: bus_ack = 8'b00000000; | |
| 8 | 8'b???????1: bus_ack = 8'b00000001; | |
| 9 | 8'b??????10: bus_ack = 8'b00000010; | |
| 10 | 8'b?????100: bus_ack = 8'b00000100; | |
| 11 | 8'b????1000: bus_ack = 8'b00001000; | |
| 12 | 8'b???10000: bus_ack = 8'b00010000; | |
| 13 | 8'b??100000: bus_ack = 8'b00100000; | |
| 14 | 8'b?1000000: bus_ack = 8'b01000000; | |
| 15 | 8'b10000000: bus_ack = 8'b10000000; | |
| 16 | endcase | |
| 17 | endmodule |