(*) Both Ports A and B can be specified input or output with Interlocked, Strobed, or Pulsed Handshake at the same time if neither uses REOUEST/WAIT.
Notes: All pins marked "REQ/WAIT" can be REQUEST/WAIT, or Bit I/O. /DAV means Data Available, RFD means Ready for Data, DAC means whatever?.
== Datasheet ==
* [[Media:CIO-Z8536.pdf]] - Zilog Z8536 CIO Datasheet (equivalent to U82536)