I am new to verilog. It gives a compilation error for the if statement.
Could someone help me out by pointing out my mistake?.
reg [2:0] next_state, current_
parameter reset_state = 3'b000;
always @(posedge clock)
case (datain)
if (current_state == reset_state)
next_state = reset_
This is a part of code that I have written. It gives the following
Error (10170): Verilog HDL syntax error at seqdet.v(24) near text &if&;
expecting an identifier (&if& is a reserved keyword ), or a number, or
a system task, or &(&, or &{&, or unary operator,
current_state is of register type and reset_state has been intialized
to 3'b000 using parameter statement.
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Jughead wrote:
& I am new to verilog. It gives a compilation error for the if statement.
& Could someone help me out by pointing out my mistake?.
& reg [2:0] next_state, current_
& parameter reset_state = 3'b000;
& always @(posedge clock)
case (datain)
if (current_state == reset_state)
next_state = reset_
& This is a part of code that I have written. It gives the following
& Error (10170): Verilog HDL syntax error at seqdet.v(24) near text &if&;
expecting an identifier (&if& is a reserved keyword ), or a number, or
& a system task, or &(&, or &{&, or unary operator,
& current_state is of register type and reset_state has been intialized
& to 3'b000 using parameter statement.
Found out that case statement didn't have a begin and end statements
and they had braces which I don't think were required. Not sure if I am
right. But I am not getting the error now.
{} are used for bit concatenation. Use &begin end& instead.
Don't forget &endcase& as well.
{} are used for bit concatenation. Use &begin end& instead.
Don't forget &endcase& as well.
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& /planet/dfs0/Knode_send_error.png
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&Balaji& &balaji@email.arizona.edu& wrote in message
news:..7e906c34@...
& I'm trying to do some basic socket programming.
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On Mon, 16 Sep :03 -0400, richard wrote:
& So where's the syntax issue at?
Possibly in the code you haven't shown us.
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Denis McMahon,
On Mon, 16 Sep :03 -0400, richard wrote:
& So where's the syntax issue at?
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news:lcbp14$mjs$1@...
& My FFT function suddenly stopped working, even trying a simple input it
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& Any idea how to fix this? I tried recompiling FFTW 3.3.3, but I still get
& the error.
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----- The following addresses had permanent fatal errors -----
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&&& MAIL From:&korler@listweb.bilkent.edu.tr& SIZE=7672
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I am trying to bcp in data to a table which is in different server.
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verilog（2）
我初学verilog语言，很多细节都没注意，按着自己的思想就写了，编译的时候才发现各种问题。这些都是我在学习中遇到的问题，还是很常见的。
1.Error (10028): Can't resolve multiple constant drivers for net ……
解析：不能在两个以上always内对同一变量赋值，这个细节一般看书看资料会看到，但是编程时，就是没想到。
2.Error (10158): Verilog HDL Module Declaration error at clkseg.v(1): port &XXXX& is not declared as port
解析：大意了，端口类型还没定义啊！
3.Error (10110): variable &en& has mixed blocking and nonblocking Procedural Assignments -- must be all blocking or all nonblocking assignments
解析:en在程序中有时用非阻塞赋值，有时用阻塞赋值，这是禁止的。在初学的时候，可能分得不是很清楚，所以在检查时，一定要一步步观察慢慢来。
4.Error (10161): Verilog HDL error at clkseg.v(36): object &count& is not declared
解析：这个错误应该很明显啦，只要能读得懂。
5.Error (10170): Verilog HDL syntax error at clkseg.v(37) near text &***&;& expecting &;&
解析：意思应该也很简单，就是检查的时候要细心点。
6.Error (10171): Verilog HDL syntax error at ir_ctrl.v(149)& expecting an identifier, or &endmodule&, or a parallel statement
解析：最后上了endmodule。一般编程的程序长了，到最后也就容易忘记。
7.Error (10278): Verilog HDL Port Declaration error at ir_ctrl.v(11): input port &ir& cannot be declared with type &&a variable data type, e.g. reg&&
解析：在Altra官网中就有该解释&&官网上有很多东西值得我们发现学习。
8.Error (10137): Verilog HDL Procedural Assignment error at test.v(24): object &check_9ms& on left-hand side of assignment must have a variable data type
解析：在Altra官网中就有该解释&
9.Error (10219): Verilog HDL Continuous Assignment error at clk_div.v(26): object &clkdiv_equ& on left-hand side of assignment must have a net type
解析：看得懂英语就懂了。
10.Error (10200): Verilog HDL Conditional Statement error at clk_div.v(22): cannot match operand(s) in the condition to the corresponding edges in the enclosing event control of the always construct
解析：看看官网的解释
11.Error (10231): Verilog HDL error at LCD1602.v(40): value cannot be assigned to input &lcd_en&
解析:端口设置出错
12.Error (10137): Verilog HDL Procedural Assignment error at LCD1602.v(49): object &lcd_rs& on left-hand side of assignment must have a variable data type
13.Error (10170): Verilog HDL syntax error at test_vga.v(57) near text &&&;& expecting &&=&, or &=&
　即这里产生的错误。
解析：一个空格，不小心分开了，而且有人喜欢把&=分开来写，这个在QUANRUS是不允许的呃。。。
14.Error: Application nios2-terminal on 127.0.0.1 is using the target device
解析：这种情况出现在JTAG模式下，你在使用NIOS下的JTAG功能（比如利用BLASTER进行在线仿真），同时你又想下载*.sof文件（就是在JTAG模式下下载程序）。简单说就是你的JTAG已经被占用了。解决办法就是关闭你正在使用的JTAG功能，然后再下载*.sof文件。初学者经常会犯这样的错误，一定要注意。
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