896k.txt ✪ [ LATEST ]

were "reserved," they were not always fully occupied by hardware. 2.1 The A Segment (704K Expansion) The most common expansion involved the A segment ( A0000cap A 0000 AFFFFcap A cap F cap F cap F cap F

bytes) of memory. IBM reserved the upper 384 KB for hardware-specific tasks (BIOS, video memory, and expansion cards), leaving 640 KB for the operating system and applications. As software grew in complexity, enthusiasts sought ways to reclaim reserved address space for system RAM. 2. Technical Methodology 896K.txt

High-end EGA and VGA cards utilized the A segment for their frame buffers, making the 704K/896K mod incompatible with modern (for the time) graphics. were "reserved," they were not always fully occupied