896k.txt -

Achieving 896K required more aggressive "filling" of the upper memory area (UMA). This involved:

The original IBM PC architecture utilized the Intel 8088 processor, which had a 20-bit address bus capable of addressing 1 MB ( 2202 to the 20th power 896K.txt

). On systems using standard MDA or CGA video cards, this segment was often empty. By installing RAM chips that responded to these addresses, users could gain an additional 64K, bringing the total contiguous memory to . Standard MS-DOS/PC-DOS versions could recognize this memory without a specialized BIOS. 2.2 Reaching 896K Achieving 896K required more aggressive "filling" of the