Misc. Functions

clock_reset

void clock_reset(void); [ 3.20+ ]
Reset the internal clock's hour, minute, second, and 'tick' counters to zero.

char clock_hh(void);
char clock_mm(void);
char clock_ss(void);
char clock_tt(void);
Return the number of hours, minutes, seconds, or 'ticks' (one VSYNC interval, or 1/6th of a second) since the last clock_reset(). Note: the accuracy of this clock is off by about 2 seconds per hour, due to the fact that NTSC VSYNC frequency is 59.97Hz, rather than 60Hz

void poke(int offset, char val); [ 3.20+ ]

void pokew(int offset, int val);

   Write 'val' value at memory location 'offset'.
   poke() is char-sized access, whereas pokew() is word-sized.

   This function can be used to access the hardware
   I/O ports located at 0x0000 to 0x1FFF.

char peek(int offset); [ 3.20+ ]
int peekw(int offset);
char farpeekb(farptr offset);
int farpeekw(farptr offset);
Read the content of memory location 'offset'. peek() is char-sized access, whereas peekw() is word-sized.

void farmemget(void dst, far void base, int len); [ 3.20+ ]
Copy 'len' bytes of memory location 'base' into 'dest'.

int rand(void); [ 3.20+ ]
Return a 16-bit random number.

void srand(int seed); [ 3.20+ ]
void srand32(int seed1, int seed2); [ 3.20+ ]
Change the random seed. You can use this function to improve randomness by giving a value based on when the player press start first for example.

char random(char max); [ 3.20+ ]
Return a random value between 0 and max-1.