From cada1f7375e323edb20d8145341ad99ceca24fb0 Mon Sep 17 00:00:00 2001
From: Robin Jones <robin@networkfusion.co.uk>
Date: Tue, 17 Oct 2017 23:56:46 +0100
Subject: [PATCH] refactored loadnesrom

removes file fragmentation issue
---
 src/main.c | 54 ++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 40 insertions(+), 14 deletions(-)

diff --git a/src/main.c b/src/main.c
index ca336a0..5eac146 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1272,26 +1272,52 @@ void rom_load_y(void)
 
 void loadnesrom(display_context_t disp, u8 *rom_path)
 {
-    FatRecord rec_tmpf;
+    FRESULT result;
+    FIL emufile;
+    UINT emubytesread;
+    result = f_open(&emufile, "/ED64/neon64bu.rom", FA_READ);
 
-    if (fatFindRecord("/ED64/neon64bu.rom", &rec_tmpf, 0) == 0) //filename already exists?
+    if (result == FR_OK)
     {
-        u8 resp = 0;
+        int emufsize = f_size(&emufile);
         //load nes emulator
-        resp = fatOpenFileByName("/ED64/neon64bu.rom", 0); //err if not found ^^
-        resp = sdRead(file.sector, (void *)0xb0000000, file.sec_available);
+        result =
+        f_read (
+            &emufile,        /* [IN] File object */
+            (void *)0xb0000000,  /* [OUT] Buffer to store read data */
+            emufsize,         /* [IN] Number of bytes to read */
+            &emubytesread    /* [OUT] Number of bytes read */
+        );
+
+        result = f_close(&emufile);
 
         //load nes rom
-        resp = fatOpenFileByName(rom_path, 0); //err if not found ^^
-        resp = sdRead(file.sector, (void *)0xb0200000, file.sec_available);
+        FIL romfile;
+        UINT rombytesread;
+        result = f_open(&romfile, rom_path, FA_READ);
+    
+        if (result == FR_OK)
+        {
+            int romfsize = f_size(&romfile);
+    
+            result =
+            f_read (
+                &romfile,        /* [IN] File object */
+                (void *)0xb0200000,  /* [OUT] Buffer to store read data */
+                romfsize,         /* [IN] Number of bytes to read */
+                &rombytesread    /* [OUT] Number of bytes read */
+            );
+    
+            result = f_close(&romfile);
 
-        boot_cic = CIC_6102;
-        boot_save = 0; //save off/cpak
-        force_tv = 0;  //no force
-        cheats_on = 0; //cheats off
-        checksum_fix_on = 0;
-
-        bootRom(disp, 1);
+            boot_cic = CIC_6102;
+            boot_save = 0; //save off/cpak
+            force_tv = 0;  //no force
+            cheats_on = 0; //cheats off
+            checksum_fix_on = 0;
+    
+            bootRom(disp, 1);
+        }
     }
 }