MAXII to MAX5 CPLD foot print compatability

Hi,
It's all described in device handbook and datasheet.

GPIO have weak pull-up resistors to respective VCCIO until user mode becomes active. State of unused pins can be globally selected in Quartus device and pin options.

"Reserves all unused pins on the target device in one of 5 states: as inputs that are tri-stated, as outputs that drive ground, as outputs that drive an unspecified signal, as input tri-stated with bus-hold, or as input tri-stated with weak pull-up."

Personally, I won't choose high-Z without pull-up if there are any unconnected GPIO pins because floating inputs can involve additional device current consumption.

Regards
Frank