Changes
ECB Bus
,/* ECB Bus Pin-Outs */
|27 || /IORQ || (MEMWR) || A12
|-
|28 || /RFSH || (DS0: /DataLSB) || A15
|-
|29 || A13 || (DS1: /DataMSB) || PHI
|-
|30 || A9 || (OFF) || /MREQ