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key.c
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key.c
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// need file libdos.c to be compile in directory
//bcc -x -i -L -Md hello.c -o HELLO.COM
#define varn 0x0080
char ccc;
char cc;
char cget();
void sputc(cc);
void sputs(cc);
int main(){
char c=255;
sputs("input a string: $");
while(c>31){
c=cget();
sputc(c);
}
asm "db 0xb4,0,0xcd,0x21";
return 0;
}
char cget()
{
char *c;
char cc;
asm "db 0xb4,0x00,0xcd,0x16,0xbb,0x80,0x0,0x2e,0x88,07";
c = (char * ) varn;
cc=*(c + 0);
return cc;
}
void sputs(cc)
char *cc;
{
int *c;
int i;
c = (int * ) varn;
*(c + 0) = cc;
asm "db 0xbb,0x80,0x0,0x2e,0x8b,0x17,0xb4,0x09,0xcd,0x21";
}
void sputc(cc)
char cc;
{
int *c;
c = (int * ) varn;
*(c + 0) = cc;
asm "db 0xbb,0x80,0x0,0x8a,0x47,0x0,0xbb,0x7,0x0,0xb4,0x0e,0xcd,0x10";
}