extern int reentrant; /* /X flag has been sent SDCC.y */
extern char buffer[]; /* general buffer SDCCgen.c */
extern int currRegBank; /* register bank being used SDCCgens.c */
+extern int RegBankUsed[4]; /* JCF: register banks used SDCCmain.c */
extern struct symbol *currFunc; /* current function SDCCgens.c */
extern int cNestLevel; /* block nest level SDCCval.c */
extern int currBlockno; /* sequentail block number */