GetFloppySize: //015 - | eax = size
 push es;
 push ebx;
 push ecx;
 push edx;

 mov es,floppy;
 mov ebx,65536; //stepsize
 mov eax,0; //output
 mov ecx,0; //the byte to be checked
 mov edx,0;
 mov es:#ecx,5;
 cmp es:#ecx,5;
 jne End_015;
 mov es:#ecx,0;
 add ecx,ebx;

 Loop_015:

  mov es:#ecx,5;
  out 4,#MemoryErrorFlag;
  cmp es:#ecx,5;
  jne NP_015;
  cmp #MemoryErrorFlag,1;
  je NP_015;
  mov es:#ecx,0;
  cmp ebx,1;
  je End_P_015;
  add ecx,ebx;

 jmp Loop_015;

 NP_015:
  mov #MemoryErrorFlag,0;
  cmp ebx,1;
  je End_NP_015;
  div ebx,2;
  sub ecx,ebx;
  jmp Loop_015;

End_P_015:
 mov eax,ecx;
 inc eax;
 jmp End_015;

End_NP_015:
 mov eax,ecx;
 jmp End_015;

End_015:
 add esp,#MemoryErrorCounter;
 pop edx;
 pop ecx;
 pop ebx;
 pop es;
ret