kludged in MDA attribute palette
rearranged mode data to allow for different modes on the same number
reinstate Tandy/PCjr video memory check for screen 5,6
implemented basic hercules, olivetti implementations (memory model still missing, color/palette statements not correct)
adjusted for border in clipboard mouse selection
More natural positioning of mouse selection. Removed solved fixme for border compensation.
load 16-pixel font unrequested to fix missing code points. if not available, don't complain.
load 16-pixel font unrequested to fix missing code points. if not available, don't complain (2).
load 16-pixel font unrequested to fix missing code points. if not available, don't complain (3).
adjusted numbers of pages for hercules, mda