84PCE:RAM:D052C6
From WikiTI
Synopsis
Unofficial Name: pixelShadow2
Memory Address: D052C6h
Length: 8400 bytes
Stores a monochrome image of the current screen contents (excluding the status bar area.)
This will only be used if bit 3 (usePixelShadow2) of putMapFlags is set, which is never done by the OS, so it remains a good place for TSRs and things.