ERR_RES
Outb(scc->ctrl,ERR_RES);
writeb(ERR_RES, &channel->control);
writeb(ERR_RES, &channel->control);
writeb(ERR_RES, &channel->control);
#define ZS_CLEARERR(channel) do { writeb(ERR_RES, &channel->control); \
write_zsreg(uap, R0, ERR_RES);
write_zsreg(uap, 0, ERR_RES);
write_zsreg(uap, R0, ERR_RES);
write_zsreg(uap, R0, ERR_RES);
#define ZS_CLEARERR(port) (write_zsreg(port, 0, ERR_RES))
writeb(ERR_RES, &channel->control);
writeb(ERR_RES, &channel->control);
writeb(ERR_RES, &channel->control);
writeb(ERR_RES, &channel->control);
#define ZS_CLEARERR(channel) do { sbus_writeb(ERR_RES, &channel->control); \
write_zsreg(zport, R0, ERR_RES);
write_zsreg(zport, R0, ERR_RES);