keifer@uiucdcs.CS.UIUC.EDU (04/05/86)
If I remember correctly, IBM CGA screen memory starts at B800, 4 pages of 25x80 characters, 2 bytes per character (including attribute). That makes 25 x 80 x 2 x 4 bytes starting at B800:0000. The IBM Monochrome adaptor starts at a different place. See the IBM BASIC Reference Manual under BSAVE (and BLOAD) for a sample code section to save and retrieve screens. (I don't have mine handy, sorry.) G. P. Seaburg c/o keifer uiucdcs