void fetchCycle(){
if(isON(FETCH_FLAG)){
fetch();
if(isOFF(JMPR_FLAG)){
decodeL();
turnOFF(FETCH_FLAG);
}else{
decodeR(MBR);
turnOFF(JMPR_FLAG);
}
}else{
decodeR(IBR);
turnON(FETCH_FLAG);
}
}
//The core function of the assembler
int parser(char *input, char *output)
{
FILE *fin;
char line[MAX_CHAR_PER_LINE];
int i=0,j,k;
char type;
char str[MAX_LINES][MAX_CHAR_PER_LINE];
memset(str,'\0',sizeof(str));
fin=fopen(input,"rt");
if(fin==NULL)
{
printf("Error on open input file\n");
exit(1);
}
printf("Please wait ...\n");
//Delete the whitespace and comments first,
// and then store the command into the array str[].
while(fgets(line,MAX_CHAR_PER_LINE,fin)!=NULL)
{
if(line[0]==13)
continue;
k=0;
for(j=0;line[j]!=13;j++)
{
if(line[j]==' '||line[j]=='\t')
{
continue;
}
else if(line[j]=='/')
{
break;
}
else
str[i][k++]=line[j];
}
if(k!=0)
{
i++;
}
}
fclose(fin);
// First pass of the str[], adding the symbol into the symboltable
int rom=0;
for(int m=0;m<i;m++)
{
type=commandtype(str[m]);
if(type=='s')
{
firstpass(str[m],rom);
}
else
rom++;
}
//Second pass of the str[],
// then decoding the A,C,L commands into 16-bits binary
// finally printf the 16 bits into the ".hack" file
FILE *fout;
fout=fopen(output,"wt");
char code[i][17];
memset(code,'\0',sizeof(code));
for(int m=0;m<i;m++)
{
type=commandtype(str[m]);
if(type=='a')
decodeA(str[m],code[m]);
if(type=='c')
decodeC(str[m],code[m]);
if (type=='l')
decodeL(str[m],code[m]);
if(type=='a'||type=='c'||type=='l')
fprintf(fout, "%s\n", code[m]);
}
fclose(fout);
printf("Process complete\n");
return 0;
}
