* so, we enumerate over columns (not rows!) to draw every 4th pixel. bit masks are used because of the font bitmap.\r
*\r
* NTS: addr defines what VGA memory address we use, "x" is redundant except to specify which of the 4 pixels we select in the map mask register. */\r
* so, we enumerate over columns (not rows!) to draw every 4th pixel. bit masks are used because of the font bitmap.\r
*\r
* NTS: addr defines what VGA memory address we use, "x" is redundant except to specify which of the 4 pixels we select in the map mask register. */\r