int __fastcall VgaModeSetOffset(int this, int n2)
{
  int v3; // ecx
  int v4; // ecx
  int v5; // esi
  int v6; // eax
  int v7; // edx
  int v8; // esi

  PciRegWrite(*(_DWORD *)(this + 60), 510525552, 0);
  PciRegWrite(v3, 510525552, (8 * n2) | 0xC1);
  v5 = 0;
  while ( 1 )
  {
    v6 = PciRegRead(v4, 510525552) & 0x3000;
    if ( (v6 & 0x2000) != 0 )
      return 0;
    if ( (unsigned int)++v5 > 0x4C4B40 )
    {
      v8 = 0;
      goto LABEL_7;
    }
    if ( v6 )
    {
      v8 = 1;
LABEL_7:
      PciRegWrite(v4, v7, 0);
      return v8;
    }
  }
}