1990/0914/gnot/stasync.c (diff list | history)

1990/0911/sys/src/9/gnot/stasync.c:11,18 – 1990/0914/sys/src/9/gnot/stasync.c:11,17 (short | long | prev | next)
1990/0911		* configuration */ enum { MAXFRAME= 246, Nasync= 1,
1990/0914		MAXFRAME= 256, /* also known to tsm8 code */
1990/0911		}; /* input states */
1990/0911/sys/src/9/gnot/stasync.c:98,113 – 1990/0914/sys/src/9/gnot/stasync.c:97,113
1990/0905
1990/0911		DPRINT("asyncopen %d\n", s->dev);
1990/0905		for(ap = async; ap < &async[Nasync]; ap++){
1990/0914		for(ap = async; ap < &async[conf.nasync]; ap++){
1990/0905		qlock(ap); if(ap->inuse == 0) break; qunlock(ap); } if(ap == &async[Nasync])
1990/0914		if(ap == &async[conf.nasync])
1990/0905		error(0, Enoasync); q->ptr = q->other->ptr = ap;
1990/0914		ap->inuse = 1;
1990/0911		ap->bp = 0;
1990/0905		ap->chan = -1; ap->count = 0;
1990/0911/sys/src/9/gnot/stasync.c:120,125 – 1990/0914/sys/src/9/gnot/stasync.c:120,126
1990/0905		ap->out = 0;
1990/0911		ap->wq = WR(q); ap->state = Hunt;
1990/0914		qunlock(ap);
1990/0905		} static void
1990/0911/sys/src/9/gnot/stasync.c:329,340 – 1990/0914/sys/src/9/gnot/stasync.c:330,341
1990/0911		asdeliver(Queue *q, Async *ap)
1990/0905		{ int chan, c;
1990/0911		Block *bp;
1990/0914		Block *bp = 0;
1990/0911		uchar *p = ap->buf; int n = ap->icount;
1990/0905
1990/0911		chan = p[1] & 0x7e; chan = (chan<<5)|((p[2] & 0x7e)>>1);
1990/0914		chan = *p++ & 0x7e; chan = (chan<<5)|((*p++ & 0x7e)>>1);
1990/0911		if(chan==0) {
1990/0905		DPRINT("a%d deliver chan 0\n", ap-async); ap->chan0++;