CIA_ICR_SP
{ CIA_ICR_SP, kbdintr },
{ CIA_ICR_SP, not_used },
{ CIA_ICR_SP, not_used },
ciaa.icr = CIA_ICR_SP; /* CIA SP interrupt disable */
ciaa.icr = CIA_ICR_IR_SC | CIA_ICR_SP;
ciaa.icr = CIA_ICR_IR_SC | CIA_ICR_SP; /* SP interrupt enable */
for (ints = 0; ! ((mask = ciaa.icr) & CIA_ICR_SP);