WOWシステム構成エミュレータ

ウィンドウズ・オン・ウィンドウズ（ＷＯＷ）で３２ビットのソフトが６４ビットのＯＳ上に動きます。
64-bit tends to refer to 1. the size of the memory address space. 2. the width of registers. It seems that addresses in the text and data segments of 32-bit programs are translated into 64-bit addresses (by zeroing out half of the bits or by using the upper bits for the base address). Some measures would need to be taken for handling overflow, it seems, if the original behavior is to be preserved.