A Change Of Face 

Installing the ECS Denise is simplicity itself.  Simply remove the old Denise and plug the new one straight in. Note that to use the new video modes you require the 1Mb Agnus not necessarily in 1Mb chip RAM mode though By installing the new Denise you also eliminate the annoying video glitches which occur in NTSC mode when using the new Agnus with the old Denise.