Is the extra RAM used by non-DV titles?
Every Digital Video incorporates an additional 1.5 MB of RAM. This memory consists of 1 MB of standard RAM, and 512 KB of decoding RAM for buffering data when decoding MPEG audio and video. All of this memory can be used by a CD-i application to improve performace. For example, a title can store data in RAM that does not to be reloaded from the disc each time. But since a Base Case CD-i title must work on every CD-i player, even if no Digital Video cartridge is available, the software must not depend on this extra RAM. The best example of the usage of this extra RAM is the Photo-CD on CD-i application. When you select the thumbnail overview of a Photo-CD disc, all of the thumbnails that are generated from the pictures on the disc are stored in RAM. The more RAM that is available, the more thumbnails that can be stored without reading the pictures from the disc again. So, Photo-CDs benefit in this way from the Digital Video cartrigde. Besides this, I know of only one “Base Case” CD-i ti
