new file: 16/modex16.tar.7z

[16.git] / 16 / modex16 / dos_kb.c

diff --git a/16/modex16/dos_kb.c b/16/modex16/dos_kb.c
deleted file mode 100644 (file)
index dd92418..0000000
--- a/16/modex16/dos_kb.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/* Thanks to Alex Russell for example code */
-/* Thanks to Gary Neal for example code */
-#include "dos_kb.h"
-
-// keyboard buffer
-static byte key[NUM_SCANCODES]; // pressed
-static byte kea[NUM_SCANCODES]; // released
-
-#ifdef __cplusplus             /* Function must be declared C style */
-extern "C" {
-#endif
-static void interrupt (far *oldkb)(void) = NULL; /* BIOS keyboard handler */
-#ifdef __cplusplus
-}
-#endif
-
-/*
- * Comment out the following #define if you don't want the testing main()
- * to be included.
- */
-//#define TESTING
-#define TESTING2
-
-/*****************NEW KEYBOARD 09h ISR***********************/
-void interrupt newkb(void){
-       byte kee;
-       register char qx;
-
-       kee = inp(0x60);        /* Read the keyboard scan code */
-
-       /* Clear keyboard controller on XT machines */
-       qx = inp(0x61);    /* Get keyboard control register */
-       qx |= 0x82;
-       outp(0x61, qx);    /* Toggle acknowledge bit high */
-       qx &= 0x7F;
-       outp(0x61, qx);    /* Toggle acknowledge bit low */
-
-       /* Interpret the scan code and set our flags */
-       #ifdef TESTING2
-       //printf("%d[%d]\n",kee,key[kee]);
-       printf("\0"); // bug
-       #endif
-       if(kee & 0x80)
-               key[kee & 0x7F] = 0; // a key is released
-       else
-               key[kee] = kea[kee] = 1; // a key is pressed
-
-       /* Acknowledge the interrupt to the programmable interrupt controller */
-       outp(0x20, 0x20);      /* Signal non specific end of interrupt */
-}
-
-/* ---------------------- init_keyboard() ---------------- April 17,1993 */
-/* restore the bios keyboard handler */
-/* ---------------------- deinit_keyboard() -------------- April 17,1993 */
-void setkb(int vq){
-       int i;  /* Index variable */
-       if(!vq){ // deinitiation
-               /* Abort if our function pointer has no valid address */
-               if(oldkb == NULL) return;
-               /* Set address in our function pointer in interrupt vector table */
-               _dos_setvect(9, oldkb);
-               /* Reset our function pointer to contain no valid address */
-               oldkb = NULL;
-               #ifdef TESTING
-               /* Print the key heap */
-               printf("\n");
-               for(i=0; i<NUM_SCANCODES; i++){
-                       if(i==NUM_SCANCODES/2) printf("================================\n");
-                       printf("%03d[%d][%d]",i+1,key[i],kea[i]);
-                       if(key[i]==1)printf("====");
-                       printf(",\n");
-               }
-               #endif
-       }else if(vq == 1){ // initiation
-               byte far *lock_key;
-
-               /* Abort if our function pointer has a valid address. */
-               if(oldkb != NULL) return;
-
-               /* Clear the keyboard buttons state arrays */
-               for(i = 0; i < NUM_SCANCODES; i++)
-                       key[i] = kea[i] = 0;
-
-               /* save old BIOS key board handler */
-               oldkb = _dos_getvect(9);
-
-               // turn off num-lock via BIOS
-               lock_key = MK_FP(0x040, 0x017); // Pointing to the address of the bios shift state keys
-               *lock_key&=(~(16 | 32 | 64)); // toggle off the locks by changing the values of the 4th, 5th, and 6th bits of the address byte of 0040:0017
-               oldkb();        // call BIOS keyhandler to change keyboard lights
-
-               /* setup our own handler */
-               _dos_setvect(9, newkb);
-       }
-}
-
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
- * keyp                                                              *
- *                                                                      *
- * Returns the status of the key requested.                            *
- * The status is 1 if the key is pressed or has been pressed since the     *
- * last call to this function for that particular key.              *
-\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-int keyp(byte c){
-       register char retVal;
-
-       /* Key value in range of keyboard keys available */
-       c &= 0x7F;
-
-       /* Get the status of the key requested */
-       retVal = key[c] | kea[c];
-
-       /* Reset the was pressed status for the requested key */
-       kea[c] = 0;
-
-       /* Return the requested key's state */
-       return retVal;
-}
-
-
-/*
- * The library testing routines follows below.
- */
-
-#ifdef TESTING
-
-/*
- * Library test (program) entry point.
- */
-
-void main(void)
-{
-       byte q;
-       setkb(1);
-       while(!keyp(1))
-       {
-               keyp(q);
-       }
-       setkb(0);
-}
-
-#endif