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96 DATA BOOK: The 4020EHQ240 has 192 user IOs, not 193 as shown on p4-176
The June 1996 Databook on page 4-176 lists 193 user IOs available for the 4020EHQ240. This number is incorrect, it should be 192.
This will be fixed in the next databook.
note: The 4025EHQ240 and the 4028EXHQ240 do have 193 available IO