be629673_ovember___Oldskooler_Ramblings__The_Good
[Feature] Memory-mapped video [The Bad] All of main memory was now display memory, which needed slow wait states to be compatible with the video hardware [The Ugly] Because of the wait states, the PCjr was the only PC ever created that was slower than the original IBM PC [The Good] 
Use as many video pages as you need; no more CGA “snow”
2008 November « Oldskooler Ramblings
The Good