#define false 0
#define __bool_true_false_are_defined 1
-#if defined (SDCC_STACK_AUTO) || defined (SDCC_hc08) || defined (SDCC_z80)
- //as long as bit/bool cannot be used reentrant
+#if defined (SDCC_ds390) || defined (SDCC_hc08) || defined (SDCC_z80) || defined (SDCC_gbz80)
#define BOOL char
#else
#define BOOL __bit