acornscsi_sbic_wait
acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 1");
acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 2");
acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "reading status byte");
acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "for message byte");
acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after message byte");
acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after negate ack");
if (acornscsi_sbic_wait(host, ASR_CIP, 0, 1000, "issuing command"))