1991/0706/pc/kbd.c (diff list | history)

1991/0705/sys/src/9/pc/kbd.c:1,9 – 1991/0706/sys/src/9/pc/kbd.c:1,9 (short | long | prev | next)
1991/0702		#include "u.h" #include "lib.h"
1991/0706		#include "mem.h"
1991/0702		#include "dat.h" #include "fns.h"
1991/0703		#include "io.h" #include "mem.h"
1991/0702		enum { Data= 0x60, /* data port */
1991/0705/sys/src/9/pc/kbd.c:241,268 – 1991/0706/sys/src/9/pc/kbd.c:241,251
1991/0703		setvec(Kbdvec, kbdintr, SEGIG); }
1991/0702		/* * get a byte from the keyboard */ int kbdc(void) {
1991/0703		int c;                  for(;;){ while((inb(Status)&Inready)==0) ; kbdintr(&c); c = getc(&kbdq); if(c != -1) return c; }
1991/0702		}
1991/0703		int kbdputc(IOQ* q, int c) { screenputc(c);
1991/0706		if(c==0x10) panic("^p");
1991/0703		putc(q, c); }
1991/0705/sys/src/9/pc/kbd.c:270,276 – 1991/0706/sys/src/9/pc/kbd.c:253,259
1991/0703		* keyboard interrupt */ void kbdintr(void *a)
1991/0706		kbdintr(Ureg *ur)
1991/0703		{ int c, nc; static int esc1, esc2;
1991/0705/sys/src/9/pc/kbd.c:291,297 – 1991/0706/sys/src/9/pc/kbd.c:274,280
1991/0703		if(c > sizeof kbtab){ print("unknown key %ux\n", c|keyup); kbdputc(&kbdq, k1); goto out;
1991/0706		return;
1991/0703		} /*
1991/0705/sys/src/9/pc/kbd.c:299,308 – 1991/0706/sys/src/9/pc/kbd.c:282,291
1991/0703		*/ if(c == 0xe0){ esc1 = 1; goto out;
1991/0706		return;
1991/0703		} else if(c == 0xe1){ esc2 = 2; goto out;
1991/0706		return;
1991/0703		} if(esc1){
1991/0705/sys/src/9/pc/kbd.c:310,316 – 1991/0706/sys/src/9/pc/kbd.c:293,299
1991/0703		esc1 = 0; } else if(esc2){ esc2--; goto out;
1991/0706		return;
1991/0703		} else if(shift) c = kbtabshift[c]; else
1991/0705/sys/src/9/pc/kbd.c:331,337 – 1991/0706/sys/src/9/pc/kbd.c:314,320
1991/0703		ctl = 0; break; } goto out;
1991/0706		return;
1991/0703		} /*
1991/0705/sys/src/9/pc/kbd.c:361,383 – 1991/0706/sys/src/9/pc/kbd.c:344,364
1991/0703		switch(c){ case Caps: caps ^= 1; goto out;
1991/0706		return;
1991/0703		case Num: num ^= 1; goto out;
1991/0706		return;
1991/0703		case Shift: shift = 1; goto out;
1991/0706		return;
1991/0703		case Latin: lstate = 1; goto out;
1991/0706		return;
1991/0703		case Ctrl: ctl = 1; goto out;
1991/0706		return;
1991/0703		} } kbdputc(&kbdq, c); out:
1991/0705		INT0ENABLE; /* reenable interrupt */
1991/0703		return; }