1 files changed, 4 insertions, 0 deletions
diff --git a/c/gbos.h b/c/gbos.h
index 6badd16..c93414f 100644
--- a/c/gbos.h
+++ b/c/gbos.h
@@ -27,6 +27,10 @@ int           fgetc(unsigned char fd);          /* a byte, or -1 at EOF */
 void          fputc(unsigned char fd, char ch);
 unsigned char flist(unsigned char slot, char *namebuf); /* 1 if slot used */
 void          fremove(const char *name);
+unsigned char mkdir(const char *path);
+unsigned char chdir(const char *path);
+unsigned char opendir(const char *path);
+void          poweroff(void);   /* clean emulator shutdown (saves) */
 #define O_READ  0
 #define O_WRITE 1
 #define NOFD    0xFF