__int64 sub_5DA0()
{
  unsigned __int8 v0; // al
  char n3; // al
  char n3_1; // cl
  __int64 result; // rax

  v0 = __inbyte(0x70u); /*0x5da5*/
  __outbyte(0x70u, v0 & 0x80 | 0x4B); /*0x5daa*/
  n3 = __inbyte(0x71u); /*0x5db0*/
  n3_1 = n3; /*0x5db1*/
  if ( (unsigned __int8)n3 > 3u ) /*0x5db8*/
  {
    n3_1 = n3; /*0x5dba*/
    if ( !n3 ) /*0x5dc2*/
      n3_1 = MEMORY[0xFDAF0490] & 2 | 1; /*0x5dce*/
  }
  if ( (unsigned __int8)(n3_1 - 1) > 0xFDu ) /*0x5dd8*/
    return 0; /*0x5deb*/
  result = 2147483718LL; /*0x5ddd*/
  if ( n3_1 == 1 ) /*0x5de7*/
    return 2147483652LL; /*0x5de7*/
  return result; /*0x5dea*/
}