Power Computing PowerBase Low-Profile, User Manual

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Chapter 2: How To Use CD-ROM ToolKit 177
Disabled
Click the Disabled button to turn Read Ahead off. Disable Read Ahead for
titles that require a constant data flow, such as those that use QuickTime™.
General recommendations:
• Select Disabled for multimedia CDs with lots of QuickTime. This
includes games, interactive educational CDs, multimedia encyclopedias,
and Enhanced CDs, like CD Extra and ActiveAudio.
Small
Click the Small button to set a Read Ahead capacity of 2 KB. CD-ROM Tool-
Kit anticipates the next information request, grabs 2 KB of that data and
stores it into RAM. It will come up immediately when you request it.
General recommendations:
• Use Small for CDs that require frequent small data requests. These
typically include dictionaries and database CDs.
Large
Click the Large button to set a Read Ahead capacity of 32 KB. Large works
the same way as Small, except that it grabs and stores a larger load of data.
General recommendations:
• Use Large for CDs that require large data requests. These typically
include Photo CDs and CDs with EPS images.