EGA/CGA Graphics Adapter (250-3048A) Features Faxback Doc. # 2113 True EGA, CGA, MDA, and Hercules compatibility (hardware and software). Has built-in automode-switch logic. Software-switchable video modes supported on EGA-type monitors. Four-plane bit-mapped graphics capability. Video memory support of 256K . This board also has a light pen interface. This Video Board supports the following monitors: Monochrome VM-5 Color CM-5, CM11 Enhanced EGM-1