Free Trial

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Memory Addresses

Memory Addresses

The physical memory (random access memory or RAM) installed into the computer is divided into memory addresses; each address equals a byte of RAM. For normal operations, the system automatically determines which memory address to use for retrieving existing information or for temporary location of new memory addresses. These addresses are also given in hexadecimal notation.

Like DMA channels, memory addresses are also abundant in computers. Add-on cards that have their own BIOS chips (some SCSI, some ATA/IDE, and some network cards, as well as all VGA and 3D video cards) or add-on cards that have RAM (video cards and a few network cards) must use unique memory addresses that are found in the range between 640 kilobytes (KB) and 1 megabyte (MB). Because there’s abundant memory address space and relatively low demand for memory addresses, conflicts are rare unless you manually configure a card to use an address already in use by another device.


  

You are currently reading a PREVIEW of this book.

                                                                                                                    

Get instant access to over $1 million worth of books and videos.

  

Start a Free Trial


  
  • Safari Books Online
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint