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Message: [QUOTE="KJ, post: 3639168"] Refer to page 4 of the user's guide (Fixed_ug.pdf) for more info. Basically the resize function has a parameter for controlling how rounding is performed that if you don't specify it, defaults to the rounding style that causes the additional synthesized logic. It also has a parameter for controlling overflow that you may want to specify as well since it defaults to 'saturate' style which will consume more logic as well instead of wrapping. Refer to the user's guide about some of the considerations you should make but basically you'll need to change your use of resize from this... xyz <= resize(abc, xyz'left, xyz'right); to this... xyz <= resize(abc, xyz'left, xyz'right,fixed_truncate, fixed_wrap); KJ [/QUOTE]