diff --git a/src/fileio.c b/src/fileio.c
deleted file mode 100644
--- a/src/fileio.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* $Id$ */
-
-#include "stdafx.h"
-#include "openttd.h"
-#include "fileio.h"
-#include "functions.h"
-#include "string.h"
-#include "macros.h"
-#include "variables.h"
-
-/*************************************************/
-/* FILE IO ROUTINES ******************************/
-/*************************************************/
-
-#define FIO_BUFFER_SIZE 512
-
-typedef struct {
-	byte *buffer, *buffer_end;          ///< position pointer in local buffer and last valid byte of buffer
-	uint32 pos;                         ///< current (system) position in file
-	FILE *cur_fh;                       ///< current file handle
-	FILE *handles[64];                  ///< array of file handles we can have open
-	byte buffer_start[FIO_BUFFER_SIZE]; ///< local buffer when read from file
-} Fio;
-
-static Fio _fio;
-
-// Get current position in file
-uint32 FioGetPos(void)
-{
-	return _fio.pos + (_fio.buffer - _fio.buffer_start) - FIO_BUFFER_SIZE;
-}
-
-void FioSeekTo(uint32 pos, int mode)
-{
-	if (mode == SEEK_CUR) pos += FioGetPos();
-	_fio.buffer = _fio.buffer_end = _fio.buffer_start + FIO_BUFFER_SIZE;
-	_fio.pos = pos;
-	fseek(_fio.cur_fh, _fio.pos, SEEK_SET);
-}
-
-// Seek to a file and a position
-void FioSeekToFile(uint32 pos)
-{
-	FILE *f = _fio.handles[pos >> 24];
-	assert(f != NULL);
-	_fio.cur_fh = f;
-	FioSeekTo(GB(pos, 0, 24), SEEK_SET);
-}
-
-byte FioReadByte(void)
-{
-	if (_fio.buffer == _fio.buffer_end) {
-		_fio.pos += FIO_BUFFER_SIZE;
-		fread(_fio.buffer = _fio.buffer_start, 1, FIO_BUFFER_SIZE, _fio.cur_fh);
-	}
-	return *_fio.buffer++;
-}
-
-void FioSkipBytes(int n)
-{
-	for (;;) {
-		int m = min(_fio.buffer_end - _fio.buffer, n);
-		_fio.buffer += m;
-		n -= m;
-		if (n == 0) break;
-		FioReadByte();
-		n--;
-	}
-}
-
-uint16 FioReadWord(void)
-{
-	byte b = FioReadByte();
-	return (FioReadByte() << 8) | b;
-}
-
-uint32 FioReadDword(void)
-{
-	uint b = FioReadWord();
-	return (FioReadWord() << 16) | b;
-}
-
-void FioReadBlock(void *ptr, uint size)
-{
-	FioSeekTo(FioGetPos(), SEEK_SET);
-	_fio.pos += size;
-	fread(ptr, 1, size, _fio.cur_fh);
-}
-
-static inline void FioCloseFile(int slot)
-{
-	if (_fio.handles[slot] != NULL) {
-		fclose(_fio.handles[slot]);
-		_fio.handles[slot] = NULL;
-	}
-}
-
-void FioCloseAll(void)
-{
-	int i;
-
-	for (i = 0; i != lengthof(_fio.handles); i++)
-		FioCloseFile(i);
-}
-
-bool FioCheckFileExists(const char *filename)
-{
-	FILE *f = FioFOpenFile(filename);
-	if (f == NULL) return false;
-
-	fclose(f);
-	return true;
-}
-
-FILE *FioFOpenFile(const char *filename)
-{
-	FILE *f;
-	char buf[MAX_PATH];
-
-	snprintf(buf, lengthof(buf), "%s%s", _paths.data_dir, filename);
-
-	f = fopen(buf, "rb");
-#if !defined(WIN32)
-	if (f == NULL) {
-		strtolower(buf + strlen(_paths.data_dir) - 1);
-		f = fopen(buf, "rb");
-
-#if defined SECOND_DATA_DIR
-		// tries in the 2nd data directory
-		if (f == NULL) {
-			snprintf(buf, lengthof(buf), "%s%s", _paths.second_data_dir, filename);
-			strtolower(buf + strlen(_paths.second_data_dir) - 1);
-			f = fopen(buf, "rb");
-		}
-#endif
-	}
-#endif
-
-	return f;
-}
-
-void FioOpenFile(int slot, const char *filename)
-{
-	FILE *f = FioFOpenFile(filename);
-
-	if (f == NULL) error("Cannot open file '%s%s'", _paths.data_dir, filename);
-
-	FioCloseFile(slot); // if file was opened before, close it
-	_fio.handles[slot] = f;
-	FioSeekToFile(slot << 24);
-}