Chapter 12

Chapter 12 - Chapter 12 DOS Memory in a Windows World I....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 12 DOS Memory in a Windows World I. The Reserved Area a. Complex compilations of different ROMs and RAMs that use memory b. Most important device in the reserved area is the System BIOS i. Located in the memory locations from F0000 to FFFFF c. Video cards have RAM that is mapped to the Memory Locations from B8000 to BFFFF d. Modern Video Cards ignore memory divisions and use A0000 to BFFFF e. C0000 to EFFFF are not dedicated to a particular device i. For optional ROMs and RAMs that Peripheral maker might install on their graphic cards f. The Video Card’s ROMs use C0000 to C7FFF II. The Conventional Area a. In the late 1970s the maximum amount of memory anyone was using was 64 KB b. As the Size of applications grew people started to add more RAM chips to their computers i. From 64 to 128KB to 256KB to 512KB to 640KB III. Expanded Memory a. The fist 640KB of addresses were occupied by RAM chips i. Rest Reserved for ROMs and RAMs b. Lotus, Intel and Microsoft got together in 1984 and came up with a way to put
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/25/2010 for the course NET 101 taught by Professor Williams during the Spring '10 term at FAU.

Page1 / 3

Chapter 12 - Chapter 12 DOS Memory in a Windows World I....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online