Вот мой код:
module MIPS_Processor();
reg [7:0] mem [0:4095]; // 4K memory cells that are 8 bits wide
reg [7:0] code[0:1023]; // 1K memory cells that are 8 bits wide
reg [31:0] registers[0:31]; // 32 registers that are 32 bits wide
reg [31:0] PC; // The program counter
initial
begin
PC = 0;
end
always
begin
// 1. Fetch an instruction from memory
bit [31:0] instruction = {{code[PC * 8 + 7:PC * 8 + 0]},
{code[(PC + 1) * 8 + 7:(PC + 1) * 8 + 0]},
{code[(PC + 2) * 8 + 7:(PC + 2) * 8 + 0]},
{code[(PC + 3) * 8 + 7:(PC + 3) * 8 + 0]}};
// 2. Increment the program counter register (by the instruction length)
PC = PC + 4;
// Rest of the code
end
endmodule
Как я могу объединить 4 массива в один массив, чтобы извлечь инструкцию из кода? Код выше не компилируется!
EDIT:
После изменения кода на то, что предложил @toolic:
bit [31:0] instruction = {
code[PC + 0],
code[PC + 1],
code[PC + 2],
code[PC + 3]
};
Тем не менее, он не компилируется:
Использование Xilinx:
=========================================================================
* HDL Compilation *
=========================================================================
Compiling verilog file "MIPS_Processor.v" in library work
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 39 expecting ']', found ':'
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 39 unexpected token: '='
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 39 unexpected token: '{'
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 40 expecting '.', found ','
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 41 expecting '.', found ','
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 42 expecting '.', found ','
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 44 expecting '.', found '}'
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 46 unexpected token: '='
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 46 unexpected token: 'PC'
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 46 expecting 'end', found '+'
Module <MIPS_Processor> compiled
ERROR:HDLCompilers:26 - "MIPS_Processor.v" line 46 expecting 'endmodule', found '4'
Analysis of file <"MIPS_Processor.prj"> failed.
-->
Total memory usage is 274336 kilobytes
Number of errors : 11 ( 0 filtered)
Number of warnings : 0 ( 0 filtered)
Number of infos : 0 ( 0 filtered)
Process "Synthesize - XST" failed
Использование Verilogger Extreme:
![enter image description here](https://i.stack.imgur.com/HpIub.png)