https://wikiti.brandonw.net/index.php?action=history&feed=atom&title=84PCSE%3ARAM%3APage3%3A8941 2026-04-19T22:17:57Z Revision history for this page on the wiki MediaWiki 1.23.5 https://wikiti.brandonw.net/index.php?title=84PCSE:RAM:Page3:8941&diff=10083&oldid=prev 2013-04-03T04:33:46Z

<p>pixelShadow</p> <p><b>New page</b></p><div>[[Category:84PCSE:RAM:By Address|3:8941 - pixelShadow]] [[Category:84PCSE:RAM:By Name|pixelShadow]]<br /> == Synopsis ==<br /> '''Unofficial Name:''' pixelShadow<br /> <br /> '''Memory Address:''' (Page 3) 8941h<br /> <br /> '''Length:''' 8400 bytes<br /> <br /> Stores a monochrome image of the current screen contents (excluding the status bar area.)<br /> <br /> == Comments ==<br /> Under normal circumstances, the system text drawing routines will draw character bitmaps to this buffer (in addition to displaying the character on screen.) This area is then used by [[84PCSE:BCALLs:452B|ScrollUp]] and [[84PCSE:BCALLs:4534|ScrollDown]] to redraw the screen contents somewhat more quickly than PutMap would. (The downside, of course, is that maintaining the pixelShadow buffer makes PutMap itself somewhat slower.)<br /> <br /> Several flags affect the use of this buffer:<br /> * When either [[84PCSE:Flags:0D#Bit_1|appTextSave]] is cleared or [[84PCSE:Flags:4C#Bit_5|textDisplayOnly]] is set, nothing is drawn to the pixel shadow. For example, appTextSave is normally cleared by the OS when a menu is displayed.<br /> * If [[84PCSE:Flags:4A#Bit_3|putmapUsePixShad2]] is set, [[84PCSE:RAM:Page3:AA11|pixelShadow2]] is used instead.<br /> * For variable-width text routines, if [[83PCSE:Flags:14#Bit_4|write_on_graph]] is set, the characters are drawn to the graph buffer instead.<br /> <br /> == See also ==<br /> * [[84PCSE:RAM:Page3:AA11|pixelShadow2]]<br /> * [[84PCSE:RAM:Page2:CAE1|cmdPixelShadow]]</div>

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