TimeQuest Critical Warning using Internal Oscillator (Quartus II)

Since you are using an internal oscillator of the MAXII device, you may try the

derive_pll_clocks

derive_clock_uncertainty

commands in your SDC file. I haven't used the internal oscillator in the MAXII but this works with megafunction configured PLL's.

If those don't work, you can apply the clock setting to the output port of the megawizard function with the

create_clock command.

The http://www.altera.com/literature/hb/qts/qts_qii53018.pdf document describes timing quest, which uses the SDC file that is based on the same format used by Synopsys Design Compiler. So once you understand the SDC format, it's actually easier to port from FPGA to ASIC flows.

Pete