www.pudn.com > ·ÂÕæÖÕ¶Ëvt100.zip > CVT100.C

#include  
#include  
#include  
 
/****************************************************************************/ 
/* Function prototypes                                                      */ 
 
int  main( void ); 
void CVT100Init( void ); 
void terminal( void ); 
void badexit( char * ); 
 
/****************************************************************************/ 
/* Global Data                                                              */ 
 
char modeline[] = 
"F5-Communications  F6-Video  F7-Keyboard  F8-VT emulation  F9-File     F10-Exit"; 
 
/****************************************************************************/ 
/* External Variables                                                       */ 
 
extern unsigned int _stacklen = 4000; 
extern unsigned int _heaplen = 5120; 
 
/****************************************************************************/ 
/* Local Static Data                                                        */ 
 
 
/****************************************************************************/ 
/****************************************************************************/ 
 
/* M A I N -- Main function for emulator */ 
 
main() 
{ 
 
   CVT100Init();                  /* Initialization */ 
   ttopen();                      /* Open selected com port */ 
   terminal();                    /* Emulate the terminal for awhile */ 
   ttclose();                     /* Close the communications port */ 
   CloseLogFile();                /* Close log file if open */ 
   gotoxy(1,25);                  /* When leaving set cursor to screen bottom*/ 
   return(0);                     /* Thats all */ 
} 
 
 
/* C V T 1 0 0 I N I T -- Initialize the VT100 emulator */ 
 
void CVT100Init() { 
 
   FileInit();                    /* Initialize File System *first* */ 
   TTinit();                      /* Initialize communications system */ 
   VidInit();                     /* Initialize video system */ 
   KeyInit();                     /* Initialize Keyboard system */ 
   VTInit();                      /* Initialize VT Emulation */ 
} 
 
/* T E R M I N A L -- Perform terminal emulation */ 
 
void terminal() 
{ 
   int thru = 0; 
   int key; 
   int c; 
 
   while (!thru) {                /* Continue until exited */ 
      if (ConChk()) {                /* If a keystroke is present */ 
         if (DoKey() == -1)          /* Then interpret it */ 
            thru = 1;                /* Watch for done flag here */ 
      } 
      if (ttchk())                /* If incoming communications chars */ 
         ConOut( ttinc() );       /* Output the character to emulation system*/ 
   } 
} 
 
 
 
/* B A D E X I T -- Exit the program displaying a fatal error message */ 
 
void badexit( char * message ) { 
   char line[132]; 
   register char * s = line; 
 
   ttclose(); 
   gotoxy(1,25);                  /* start message on last line of display*/ 
 
   while ( (*s = *message++) != '\0') 
      s++; 
   *s++ = '\a';                   /* Concantonate a '$' to the message */ 
   *s = '$'; 
 
   _DX = (unsigned) line; 
   _AH = 9; 
   geninterrupt(0x21);            /* Display message using DOS function 9 */ 
   exit(1);                       /* Exit with errorlevel 1 */ 
}