RES_EXT_INT
Outb(scc->ctrl,RES_EXT_INT); /* reset ext/status interrupts */
Outb(scc->ctrl,RES_EXT_INT);
Outb(scc->ctrl,RES_EXT_INT); /* reset ext/status interrupts */
Outb(scc->ctrl,RES_EXT_INT);
Outb(scc->ctrl, RES_EXT_INT); /* reset ext/status interrupts */
Outb(scc->ctrl,RES_EXT_INT);
Outb(scc->ctrl,RES_EXT_INT); /* reset ext/status interrupts */
Outb(scc->ctrl,RES_EXT_INT); /* must be done twice */
write_zsreg(channel, R0, RES_EXT_INT);
write_zsreg(channel, R0, RES_EXT_INT);
writeb(RES_EXT_INT, &channel->control);
#define ZS_CLEARSTAT(channel) do { writeb(RES_EXT_INT, &channel->control); \
write_zsreg(uap, R0, RES_EXT_INT);
write_zsreg(uap, R0, RES_EXT_INT);
write_zsreg(uap, R0, RES_EXT_INT);
write_zsreg(uap, 0, RES_EXT_INT);
write_zsreg(uap, 0, RES_EXT_INT);
write_zsreg(uap, 0, RES_EXT_INT); /* to kill some time */
write_zsreg(uap, 0, RES_EXT_INT);
write_zsreg(channel, R0, RES_EXT_INT); /* First Latch */
write_zsreg(channel, R0, RES_EXT_INT); /* Second Latch */
writeb(RES_EXT_INT, &channel->control);
#define ZS_CLEARSTAT(channel) do { sbus_writeb(RES_EXT_INT, &channel->control); \
write_zsreg(zport_a, R0, RES_EXT_INT);
write_zsreg(zport, R0, RES_EXT_INT);
write_zsreg(zport, R0, RES_EXT_INT);