Patent ID: 7456839

Claim:
A screen creating device comprising: a screen creating section for creating a screen including a display element for displaying a condition under which data is read out of or written in a region of a memory specified by an address, the screen creating section displaying, on a screen creating window, both an address list for showing a usage condition of the address and a screen creating region for creating the screen; an address assigning section for assigning a particular address to the display element, so as to cause the display element to display a condition of read/write of data of the particular address; an address management section for managing a usage condition of the address, and an address monitoring section for monitoring if there is a change in a usage condition of the address, the change being caused by assigning of the address by the address assigning section, and for informing the change to the address management section, wherein the screen creating section displays the address list, based on a usage condition of the address managed by the address management section.