1993/1003/carrera/kbd.c (diff list | history)

1993/1001/sys/src/9/carrera/kbd.c:19,24 – 1993/1003/sys/src/9/carrera/kbd.c:19,25 (short | long | prev | next)
1993/0907		Ktest= 0xAB, /* keyboard test */ Kdisable= 0xAD, /* disable keyboard */ Kenable= 0xAE, /* enable keyboard */
1993/1003		Kmseena= 0xA8, /* enable mouse */
1993/0907		Krdin= 0xC0, /* read input port */ Krdout= 0xD0, /* read output port */ Kwrout= 0xD1, /* write output port */
1993/1001/sys/src/9/carrera/kbd.c:46,51 – 1993/1003/sys/src/9/carrera/kbd.c:47,53
1993/0907		* command register bits */ Cintena= 1<<0, /* enable output interrupt */
1993/1003		Cmseint= 1<<1, /* enable mouse interrupt */
1993/0907		Csystem= 1<<2, /* set system */ Cinhibit= 1<<3, /* inhibit override */ Cdisable= 1<<4, /* disable keyboard */
1993/1001/sys/src/9/carrera/kbd.c:187,197 – 1993/1003/sys/src/9/carrera/kbd.c:189,222
1993/1001		void mouseintr(void) { uchar code;
1993/1003		uchar c; static int nb; int buttons, dx, dy; static short msg[3]; static uchar b[] = {0, 1, 4, 5, 2, 3, 6, 7, 0, 1, 2, 5, 2, 3, 6, 7 };
1993/1001		kbdwait(); code = KBDDAT; print("mouse intr %d\n", code);
1993/1003		c = KBDDAT; /* * check byte 0 for consistency */ if(nb==0 && (c&0xc8)!=0x08) return; msg[nb] = c; if(++nb == 3){ nb = 0; if(msg[0] & 0x10) msg[1] |= 0xFF00; if(msg[0] & 0x20) msg[2] |= 0xFF00; buttons = b[msg[0]&7]; dx = msg[1]; dy = -msg[2]; mousetrack(buttons, dx, dy); }
1993/0907		} int
1993/1001/sys/src/9/carrera/kbd.c:342,347 – 1993/1003/sys/src/9/carrera/kbd.c:367,401
1993/0907		} }
1993/1003		/* * send a command to the mouse */ static int mousecmd(int cmd) { int tries; unsigned int c; c = 0; tries = 0; do{ if(tries++ > 2) break; OUTWAIT; KBDCTL = 0xD4; OUTWAIT; KBDDAT = cmd; OUTWAIT; kbdwait(); c = KBDDAT; } while(c == 0xFE || c == 0); if(c != 0xFA){ print("mouse returns %2.2ux to the %2.2ux command\n", c, cmd); return -1; } return 0; }
1993/0907		int kbdinit(void) {
1993/1001/sys/src/9/carrera/kbd.c:387,396 – 1993/1003/sys/src/9/carrera/kbd.c:441,455
1993/0907		OUTWAIT; KBDCTL = Kwrcmd; OUTWAIT; KBDDAT = Csystem | Cinhibit | Cintena;
1993/1003		KBDDAT = Csystem | Cinhibit | Cintena | Cmseint;
1993/0907		OUTWAIT; KBDCTL = Kenable;
1993/1003		OUTWAIT; KBDCTL = Kmseena;
1993/0907		empty();
1993/1003		mousecmd(0xEA); mousecmd(0xF4);
1993/0907		return 1; }