|
马上注册,结交更多好友,享用更多功能,让你轻松玩转社区。
您需要 登录 才可以下载或查看,没有账号?注册
x
我用的是Quartus II 5.0,timing仿真过了,但是function仿真过不了!!
`timescale 10ns/1ns
module capcard (we,
nrd,
addressbus,
reset,
CS_V1,
CAPING,
CAPSTR,
ICLK,
IDQ,
IGPV,
IGPH
);
input CS_V1,CAPSTR,ICLK,IDQ,IGPH,IGPV,nrd,reset;
output CAPING,we;
output [17:0] addressbus;
wire IGPV,nrd,CS_V1;
reg we;
reg [17:0] addressbus;
reg CAPING;
reg [2:0] state;
parameter idle=3'b000, startcapflag=3'b001, //FSM
wait_vstart =3'b010, wait_vend =3'b011,
wait_hstart =3'b100, wait_hend=3'b101,
startcaping=3'b110, read_flag=3'b111;
initial
begin
addressbus<=18'b00_0000_0000_0000_0000;
we<=1;
CAPING<=1;
state<=idle;
end
always @ (posedge ICLK or negedge reset)
begin
if(!reset)begin
we<=1;
CAPING<=1;
state<=idle;
end
else
case(state)
idle:
if(!CAPSTR)
state<=startcapflag;
else if(!nrd)
state<=read_flag;
read_flag:begin
addressbus<=addressbus+1;
CAPING<=1;
end
startcapflag:
if(!IGPV)begin
state<=wait_vstart;
end
wait_vstart:
if(IGPV)begin
state<=wait_vend;
end
wait_vend:
if(!IGPH)begin
state<=wait_hstart;
end
wait_hstart:
if(IGPH)begin
state<=wait_hend;
end
wait_hend:
if(IDQ)begin
state<=startcaping;
end
startcaping:begin
addressbus<=addressbus+1;
we<=0;
CAPING<=0;
if(!IGPV)begin
state<=idle;
CPING<=0;
end
else state<=startcaping;
end
default : state<=idle;
endcase
end
endmodule |
-
timing仿真
-
function仿真
|