diff --git a/src/devices/file.c b/src/devices/file.c
index 08b39e9..549b963 100644
--- a/src/devices/file.c
+++ b/src/devices/file.c
@@ -170,7 +170,7 @@ file_init(UxnFile *c, char *filename, size_t max_len, int override_sandbox)
 }
 
 static Uint16
-file_read(UxnFile *c, void *dest, Uint16 len)
+file_read(UxnFile *c, void *dest, int len)
 {
 	if(c->outside_sandbox) return 0;
 	if(c->state != FILE_READ && c->state != DIR_READ) {
@@ -288,7 +288,7 @@ load_rom(Uxn *u, char *filename)
 {
 	int ret;
 	file_init(uxn_file, filename, strlen(filename) + 1, 1);
-	ret = file_read(uxn_file, &u->ram[PAGE_PROGRAM], 0x10000 - PAGE_PROGRAM);
+	ret = file_read(uxn_file, &u->ram[PAGE_PROGRAM], 0x100000 - PAGE_PROGRAM);
 	reset(uxn_file);
 	return ret;
 }
diff --git a/src/devices/system.c b/src/devices/system.c
index 8488056..5339c41 100644
--- a/src/devices/system.c
+++ b/src/devices/system.c
@@ -68,25 +68,17 @@ mmu_init(Mmu *m, Uint16 pages)
 	return m->pages;
 }
 
-void
-mmu_copy(Uint8 *ram, Uint16 length, Uint16 src_page, Uint16 src_addr, Uint16 dst_page, Uint16 dst_addr)
-{
-	Uint16 i;
-	for(i = 0; i < length; i++) {
-		ram[dst_page * 0x10000 + dst_addr + i] = ram[src_page * 0x10000 + src_addr + i];
-	}
-}
-
 void
 mmu_eval(Uint8 *ram, Uint16 addr)
 {
-	Uint16 a = addr;
+	Uint16 a = addr, i = 0;
 	Uint8 o = ram[a++];
 	if(o == 1) {
 		Uint16 length = (ram[a++] << 8) + ram[a++];
 		Uint16 src_page = ((ram[a++] << 8) + ram[a++]) % 16, src_addr = (ram[a++] << 8) + ram[a++];
 		Uint16 dst_page = ((ram[a++] << 8) + ram[a++]) % 16, dst_addr = (ram[a++] << 8) + ram[a];
-		mmu_copy(ram, length, src_page, src_addr, dst_page, dst_addr);
+		for(i = 0; i < length; i++)
+			ram[dst_page * 0x10000 + dst_addr + i] = ram[src_page * 0x10000 + src_addr + i];
 	}
 }
 
diff --git a/src/uxnemu.c b/src/uxnemu.c
index c4bc7a4..4811138 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -455,7 +455,6 @@ run(Uxn *u)
 			SDL_WaitEvent(NULL);
 	}
 	return error("SDL_WaitEvent", SDL_GetError());
-	;
 }
 
 int