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Magnum One (Mid-American Digital) (Disc Manufacturing).iso
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snip9_91.arc
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KB_DATA.C
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C/C++ Source or Header
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1991-09-17
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2KB
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53 lines
/* by: Dan Kozak */
#include <stdio.h>
typedef struct /* Keyboard status structure */
{
unsigned int
right_shift_down : 1, /* Right Shift key depressed */
left_shift_down : 1, /* Left Shift key depressed */
ctrl_shift_down : 1, /* Ctrl key depressed */
alt_shift_down : 1, /* Alt key depressed */
scroll_on : 1, /* Scroll Lock is on */
num_on : 1, /* Num Lock is on */
caps_on : 1, /* Caps Lock is on */
ins_on : 1, /* Insert state is active */
filler : 3, /* Filler for word alignment */
ctrl_numloc : 1, /* Suspend key is on */
scroll_down : 1, /* Scroll Lock key depressed */
num_down : 1, /* Num Lock key depressed */
caps_down : 1, /* Caps Lock key depressed */
ins_down : 1; /* Insert key depressed */
} biosshiftstate;
/* the far modifier is an MS-DOS specific thing and is
implemented differently by different compilers
how you assign a constant to a far pointer is also compiler
dependent, this is how TC does it. BTW, don't have Ray Duncan or
Peter Norton handy, I think this is the correct address for the
status bytes, it seems to work anyway
*/
biosshiftstate far *kbd_status = (biosshiftstate far *) 0x00000417L;
main()
{
while(1)
{
printf("right_shift_down = %d\n",kbd_status->right_shift_down);
printf("left_shift_down = %d\n",kbd_status->left_shift_down);
printf("ctrl_shift_down = %d\n",kbd_status->ctrl_shift_down);
printf("alt_shift_down = %d\n",kbd_status->alt_shift_down);
printf("scroll_on = %d\n",kbd_status->scroll_on);
printf("num_on = %d\n",kbd_status->num_on);
printf("caps_on = %d\n",kbd_status->caps_on);
printf("ins_on = %d\n",kbd_status->ins_on);
printf("filler = %d\n",kbd_status->filler);
printf("ctrl_numloc = %d\n",kbd_status->ctrl_numloc);
printf("scroll_down = %d\n",kbd_status->scroll_down);
printf("num_down = %d\n",kbd_status->num_down);
printf("caps_down = %d\n",kbd_status->caps_down);
printf("ins_down = %d\n",kbd_status->ins_down);
}
}