/* ** Set or determine the status of the DOS "SET BREAK=" command */ #include #define BOOL(x) (!(!(x))) /* ** Returns status of DOS "SET BREAK" command */ int isBreakOn(void) { union REGS regs; regs.x.ax = 0x3300; intdos(®s, ®s); return (int)regs.h.dl; } void setBreak(int OnOff) /* Off = 0, On = 1 */ { union REGS regs; regs.x.ax = 0x3301; regs.h.dl = OnOff; intdos(®s, ®s); }