SL11_E0LEN
sl11write(sc, SL11_E0LEN, len);
{{SL11_E0ADDR, SL11_E0LEN, SL11_E0PID, SL11_E0DEV },
slhci_write(sc, SL11_E0LEN, 0);
alen = slhci_read(ssc, SL11_E0LEN);
#define SL11_E1LEN (SL11_E1BASE + SL11_E0LEN)