aer@alice.UucP (D. Rosenberg) (01/28/86)
In article <551@well.UUCP>, ..well!farren (Mike Farren) wrote this: > (The discussion was about plotting 2-high pixels in the 640X200 mode) > No, you don't have 640 X 200 virtual pixels. You have 640 X 399 screen > locations which can hold a pixel, which pixel is two lines high. For example: > > Screen lines --> X......... Note the pixels are composed of two dots (what > X..X...... are normally called pixels), and that adjacent > ...X..X... pixels can overlap by one line. This means > ......X... that the ONLY structures on the screen which > will lose resolution are those which are I think I'm beginning to get the gist here. But you really can't exactly call that v400 resolution, can you? Vertical dots just aren't as *fine* as they would be if they weren't piled on top of each other. Which brings me to my second point: 400 vertical dots is what we're working with here, right? Not 399. Though most every interface to the bit map uses positions numbered 0 through 399, it doesn't mean there are 399 positions. Position 0 counts too- hence we have 400 positions. (Or am I still missing something?) -- ########################################################################## #D. Rosenberg "Disclaimer: I'd never want to hurt anyone with My Opinions" #(..{ihnp4,research,allegra}!alice!aer)