put two flags into bit addressable ram

src/calc.c

@@ -33,7 +33,7 @@ __xdata dec80 LastX;
 #define STACK_T 3
 
 uint8_t NoLift = 0;
-uint8_t IsShifted = 0;
+__bit IsShifted = 0;
 
 //stack "grows" towards 0
 __xdata dec80 Stack[STACK_SIZE]; //0->x, 1->y, 2->z, 3->t initially

src/calc.h

@@ -32,7 +32,7 @@ void process_cmd(char cmd);
 //push_decn is equivalent to "set_x()" if no_lift is true
 void push_decn(__xdata const char* signif_str, __xdata exp_t exponent);
 extern uint8_t NoLift;
-extern uint8_t IsShifted;
+extern __bit IsShifted;
 
 void clear_x(void);
 __xdata dec80* get_x(void);

src/main.c

@@ -49,7 +49,7 @@ QSemaphore LcdAvailable(1);
 int8_t NewKeyBuf[4];
 volatile uint8_t new_key_write_i;
 volatile uint8_t new_key_read_i;
-volatile uint8_t NewKeyEmpty;
+volatile __bit NewKeyEmpty;
 
 #define INCR_NEW_KEY_I(i) i = (i + 1) & 3
 

src/utils.h

@@ -48,7 +48,9 @@ void backlight_off(void);
 #endif
 
 #if defined(DESKTOP) || defined(IS_ECLIPSE)
+#include <stdbool.h>
 char* u32str(uint32_t x, char* buf, uint8_t base);
+#define __bit bool
 #define __code
 #define __xdata
 #define __idata