Changes
/* Instruction timing : talk about r005.8.16c20 */
IO_ACK offset into INT (interrupt) should not implicated by WAIT_n generator, and it seems that a WAIT_n during T2 is ignored because of autowait already inserted at this moment... for synchronizing an IO_ACK, I have normaly to insert WAIT_n during T2+2.
In doc, IO_ACK begin after T2, during the two autowait inserted. So no way to detect that an instruction is IO_WAITing before slowing it following "slow down" instruction timing table.
=== Test of a real Zilog 80 ===
