0xA71000

0xA71000 is a hexadecimal address commonly associated with the start of the video RAM (VRAM) in the IBM PC and compatible systems. The hexadecimal system is a base-16 numbering system that uses digits 0-9 and letters A-F to represent values. In this context, 0xA71000 translates to 10885888 in decimal, which is the starting address for video memory in these systems.

The address 0xA71000 is significant in the context of computer graphics and display hardware. It marks the beginning of the memory region allocated for storing video data, which is used by the graphics adapter to render images on the screen. This memory is often referred to as video RAM or VRAM, and it is distinct from the system RAM used for general computing tasks.

The use of 0xA71000 as a starting address for VRAM is a convention that has been followed in many PC architectures, including the IBM PC, IBM PC/AT, and their compatibles. This address is part of the system's memory map, which defines how different components of the computer use the available memory.

Understanding the significance of 0xA71000 requires knowledge of computer architecture and memory management. It is a technical detail that is relevant to those working with low-level programming, hardware design, or system-level software development.