ISPSoft User Manual Adding an input node to an AND/OR block Select an input node of an AND/OR block, and then click on the toolbar. After is clicked, a node will be added to the bottom of the input node selected. If the input node selected is the topmost input node of an AND/OR block, e.g. M0 in the figure below, users can not add an input node. If an AND/OR block is selected, an input node will be added to the bottom of the bottommost input node of the block after is clicked. Deleting an input node from an AND/OR block Select an input node which will be deleted from an AND/OR block, and then click on the toolbar. After is clicked, the input node will be deleted.
Users have to pay attention to the following two points when they delete an input node. (a) The topmost input node of an AND/OR block, e.g. M0 in the figure below, can not be deleted. (b) If an AND/OR block has only two input nodes, neither of the input nodes can not be deleted. 11-14