This control panel requires a Macintosh Plus or better with System 6.0 or higher. Therefore it should run on most of the Macs out there.

At startup it uses less than 1K RAM. When opening the control panel, ScreenMan needs about 50K plus whatever your pictures need (that can be much !). If there is not enough memory available, I always try to bail out gracefully, giving the user an indication of the problem. All the memory used up by the control panel is released after closing ScreenMan. If you experience problems displaying the pictures, try closing other applications (or use smaller pictures :-)

The disk space requirements depend only on the number and size of your startup screens.

Warning : Liberal use of this control panel may lead to excessive hard disk usage!
E.g. my StartupScreen file currently has 13.1 megabytes !