The following GUI tools in the Designer software enable you to view and edit physical constraints for the SX, MX, 3200DX, ACT3, ACT2, and ACT1 families:
ChipEditor - a graphical application for viewing and assigning I/O and logic macros. This tool is particularly useful when you need maximum control over your design placement.
PinEditor - a graphical application for assigning I/O ports to package pins.
NetlistViewer - a graphical application for displaying the contents of a design as a schematic. Use this tool to view nets, ports, and instances and to trace signals.
Note: These tools work with Timer.