Simulink HDL Coder中的BlackBox及RAM仿真初始化

function MIFWrt(fName,MifPad,WL,BW,myData)

% 写MIf文件

%Author by McCrocodile ZHENG 20110323

%myData必须和WL描述的长度一致

%% 下面是Altera对MIf文件的描述

% An ASCII text file (with the extension .mif) that specifies the initial

% content of a memory block (CAM, RAM, or ROM), that is, the initial values

% for each address. This file is used during project compilation and/or simulation.

% You can create a Memory Initialization File in the Memory Editor, the In-System Memory Content Editor,

% or the Quartus II Text Editor.

% A Memory Initialization File serves as an input file for memory initialization in the Compiler and Simulator.

% You can also use a Hexadecimal (Intel-Format) File (.hex) to provide memory initialization data.

% A Memory Initialization File contains the initial values for each address in the memory.

% A separate file is required for each memory block. In a Memory Initialization File,

% you must specify the memory depth and width values. In addition, you can specify data radixes as binary (BIN),

% hexadecimal (HEX), octal (OCT), signed decimal (DEC), or unsigned decimal (UNS) to display and interpret

% addresses and data values. Data values must match the specified data radix.

% When creating a Memory Initialization File in the Quartus II Text Editor, you must start with the DEPTH,

% WIDTH, ADDRESS_RADIX and DATA_RADIX keywords. You can use Tab "/t" and Space " " characters as separators,

% and insert multiple lines of comments with the percent "%" character, or a single comment with double dash

% "--" characters. Address : data pairs represent data contained inside certain memory addresses and you must

% place them between the CONTENT BEGIN and END keywords, as shown in the following examples.

%% 打开文件

fid1=fopen(fName,'w+');

fid2=fopen(MifPad,'r');

%% 创建需要的数据

hello_index = [0:WL-1]';

hello_temp=zeros(length(myData),1);

for mm=1:WL

if myData(mm)<0

hello_temp(mm)=2^BW+myData(mm);

else

hello_temp(mm)=myData(mm);

end

end

hello=[num2str(hello_index),char(58*ones(WL,1)),num2str(hello_temp),...

char(59*ones(WL,1)),char(10*ones(WL,1))];

%% 写文件头部

% flag=min(myData)<0;

tline=fgetl(fid2);%读取文件2的第一行

n=0;%初始化计数器

while ischar(tline)

if n==16

fprintf(fid1,'%s/n',['WIDTH=',num2str(BW),';']);

elseif n==17

fprintf(fid1,'%s/n',['DEPTH=',num2str(WL),';']);

% elseif n==20&&flag==1

% fprintf(fid1,'%s/n','DATA_RADIX=DEC;');

else

fprintf(fid1,'%s/n',tline);

end

tline=fgetl(fid2);

n=n+1;

if n==23

break;

end

end

%% 写数据部分

fprintf(fid1,'%s',hello');

fprintf(fid1,'END;');

fclose(fid1);

fclose(fid2);

end

% 生成RAM初始化数据

clear all;close all;clc;

%% 存储器参数

WL=256; %存储器长度

BW=8; %存储器位宽

fName='Mif1.mif';

MifPad='MifPad.mif';

%% 需要写的数据

myData=zeros(WL,1);

% 如果数据是定点的，那么还需要做处理

%%

MIFWRT(fName,MifPad,WL,BW,myData)

% copyfile(fName,'./core')

上面是两个M文件，MifPad就是空的mif文件，如下。

-- Copyright (C) 1991-2010 Altera Corporation

-- Your use of Altera Corporation's design tools, logic functions

-- and other software and tools, and its AMPP partner logic

-- functions, and any output files from any of the foregoing

-- (including device programming or simulation files), and any

-- associated documentation or information are expressly subject

-- to the terms and conditions of the Altera Program License

-- Subscription Agreement, Altera MegaCore Function License

-- Agreement, or other applicable license agreement, including,

-- without limitation, that your use is for the sole purpose of

-- programming logic devices manufactured by Altera and sold by

-- Altera or its authorized distributors. Please refer to the

-- applicable agreement for further details.

-- Quartus II generated Memory Initialization File (.mif)

WIDTH=8;

DEPTH=256;

ADDRESS_RADIX=UNS;

DATA_RADIX=UNS;

CONTENT BEGIN

END;