I am not sure I understand your question but here is how bidding works when an auction has a reserve:

If your maximum bid is LESS than the reserve the normal bidding rules apply and your bid is increased by the standard increments until it exceeds the next highest bid. So if the reserve is $500 and the current bid is $105 and you bid $300, your bid is only increased until it exceeds the current $105 bid at $110. If other bidders make higher bids your bid will be increased until you are out bid or are high bidder. If the reserve is not met the auction ends in a no sale.

If you bid MORE than the reserve your bid is increased until it meets the reserve. If the reserve it $500 and the current bid is $105 and you bid $750 your bid will be set at $500 and you will be high bidder. If there are other later bids your bid will be increased by the normal poxy process until your bid of $750 is exceeded or you win the auction.

Hope this helps....