+ wire [7:0] odata = (romno == 0) ? brom0[addrlatch] : brom1[addrlatch];
+ always @(posedge clk) begin
+ rdlatch <= rd && decode;
+ addrlatch <= address[7:0];
+ if (wr && decode) romnotmp <= data[0];
+ if (rd && address == 16'h0000) romno <= romnotmp; /* Latch when the program restarts. */
+ end
+ assign data = rdlatch ? odata : 8'bzzzzzzzz;