Thank you trickydicky, that worked..
As "Check syntax" is also part of that synthesize-XST, just doing that..
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I have few more questions,
1. Under which logic does the synthesize lead me to create LATCHES? You guys were previously mentioning that, this code will create will create latches.
2. If i want to test my code on board, it seems, the JTAG tool chain is too expensive to buy.. any low cost solutions? Like for micro controller have ISP..
3. what is the low cost evaluation board available in market?