diff options
Diffstat (limited to 'rtl')
| -rw-r--r-- | rtl/bus_master.sv | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/rtl/bus_master.sv b/rtl/bus_master.sv index 4967d65..d86a132 100644 --- a/rtl/bus_master.sv +++ b/rtl/bus_master.sv @@ -1,7 +1,7 @@ module bus_master ( input logic clk, - rst, + rst_n, input logic[29:0] addr, input logic start, @@ -39,7 +39,7 @@ module bus_master WAIT: ready = !avl_waitrequest; endcase - always_ff @(posedge clk) + always_ff @(posedge clk or negedge rst_n) /* P. 16: * A host must make no assumption about the assertion state of * waitrequest when the host is idle: waitrequest may be high or @@ -47,7 +47,11 @@ module bus_master * host control signals to the agent must remain constant except for * beginbursttransfer. */ - if((state == IDLE || !avl_waitrequest) && start) begin + if(!rst_n) begin + state <= IDLE; + avl_read <= 0; + avl_write <= 0; + end else if((state == IDLE || !avl_waitrequest) && start) begin state <= WAIT; avl_read <= ~write; avl_write <= write; @@ -60,9 +64,6 @@ module bus_master end initial begin - state = IDLE; - avl_read = 0; - avl_write = 0; end endmodule |