Timing constraints for ALTLVDS I/O

This did work in the Classic Timing Analyzer in the past, but it might have been a long time since it last worked. The Help page is just out of date to still say it can be done with the Classic Timing Analyzer.

My previous post reworded for clarification about which Help page I referred to:

The Classic Timing Analyzer Help page wasn't clear whether to use the Input Maximum Delay setting alone (what I thought it meant for this purpose) or in combination with Input Minimum Delay to create a delta that equals TCCS like with TimeQuest. I tried both ways--neither worked. I tried only QII 7.1, but what I was told sounded like Classic Timing Analyzer support for this was dropped a while back. I think TimeQuest is the only way to do it now without a manual calculation to account for the external TCCS.

The TimeQuest Help page is clear that TCCS is the difference between the set_input_delay -max and set_input_delay -min values in that analyzer.