640KB barrier

Also known as conventional memory, the 640KB barrier is the PC compatible memory limit created by the DOS mode that only allows DOS programs to address only 1MB total memory. Because the system required 384KB to be reserved, this left the lower 640KB for DOS and other programs.

See our memory diagram page for additional information about the different sections of PC memory.

Also see: Memory definitions

Index

Category:
Dictionary

Related Pages:
# - Definitions

Resolved

Were you able to locate the answer to your questions?

Home - Computer help - Contact - Dictionary - Links
Link to Computer Hope - Bookmark Computer Hope