1991/0730/pc/kbd.c (diff list | history)

1991/0719/sys/src/9/pc/kbd.c:11,23 – 1991/0730/sys/src/9/pc/kbd.c:11,25 (short | long | prev | next)
1991/0702		Status= 0x64, /* status port */ Inready= 0x01, /* input character ready */ Outbusy= 0x02, /* output busy */ Sysflag= 0x04, /* ??? */
1991/0730		Sysflag= 0x04, /* system flag */
1991/0702		Cmddata= 0x08, /* cmd==0, data==1 */ kbdinh= 0x10, /* keyboard inhibited */ Xtimeout= 0x20, /* transmit timeout */ Rtimeout= 0x40, /* receive timeout */ Parity= 0x80, /* 0==odd, 1==even */
1991/0730		Inhibit= 0x10, /* keyboard/mouse inhibited */ Minready= 0x20, /* mouse character ready */ Rtimeout= 0x40, /* general timeout */ Parity= 0x80, /* 1 == error */
1991/0702
1991/0730		Cmd= 0x64, /* command port (write only) */
1991/0703		Spec= 0x80, PF= Spec|0x20, /* num pad function key */
1991/0719/sys/src/9/pc/kbd.c:237,244 – 1991/0730/sys/src/9/pc/kbd.c:239,273
1991/0703		void kbdinit(void) {
1991/0730		uchar c;
1991/0703		initq(&kbdq);
1991/0716		setvec(Kbdvec, kbdintr);
1991/0730		/* wait for a quiescent controller */ while((c = inb(Status)) & (Outbusy | Inready)) if(c & Inready) inb(Data); /* read controller command byte */ outb(Cmd, 0x20); while(!(inb(Status) & Inready)) ; c = inb(Data); print("input completed\n"); delay(5000); /* enable mouse and mouse interupts */ c = (c&~0x20) | 0x02; outb(Cmd, 0x60); while(inb(Status) & Outbusy) ; outb(Data, c); print("mouse enabled\n"); delay(5000); initq(&mouseq); setvec(Mousevec, kbdintr);
1991/0703		} /*
1991/0719/sys/src/9/pc/kbd.c:247,253 – 1991/0730/sys/src/9/pc/kbd.c:276,282
1991/0703		void
1991/0706		kbdintr(Ureg *ur)
1991/0703		{ int c, nc;
1991/0730		int s, c, nc;
1991/0703		static int esc1, esc2; static int shift; static int caps;
1991/0719/sys/src/9/pc/kbd.c:257,265 – 1991/0730/sys/src/9/pc/kbd.c:286,304
1991/0703		int keyup;
1991/0702
1991/0703		/*
1991/0719		* get a character
1991/0730		* get status and character
1991/0703		*/
1991/0730		s = inb(Status);
1991/0703		c = inb(Data);
1991/0730		/* * if it's the mouse... */ if(s & Minready){ print("mousechar\n"); mouseputc(&mouseq, c); return; }
1991/0703		keyup = c&0x80; c &= 0x7f;