Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.

 

 

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View Extra Audio Details in Snow Leopard

In Snow Leopard, Option-clicking the Volume icon in the menu bar displays a list of sound input and output devices. Choose one to switch to it; it's much easier than using the Sound preference pane. Also, hold Shift and click the icon to set the system volume, which is separate from the general output volume.

Submitted by
Doug McLean

 
 

Apple's Level 2 Cache Fix

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Apple's Level 2 Cache Fix -- Last week, Apple released the 54xx/64xx L2 Cache Reset extension, fixing a bug that disabled the Level 2 processor cache in machines using Apple's "Alchemy" motherboard design. This includes Power Macintosh or Performa 6360, 5400-series, and 6400-series computers, Power Computing's PowerBase series, and UMAX C500 and C600 models. In case you're wondering, Level 2 cache is a bit of high-speed memory - usually 256K to 1 MB - that lives near the PowerPC processor. The CPU uses it to cache instructions and data for quick retrieval rather than returning to the (comparatively slow) RAM and disk systems to get the same information over and over again.

You need this update if you use one of the above machines and you're running Mac OS 7.6.1, or System 7.5.3 and the 54xx/64xx Update 1.1 extension. The update re-enables Level 2 caches on the systems, producing speed gains of as much as 30 percent in some circumstances. Although this patch is a tiny disk image file (11K), you'll need Apple's DiskCopy 6.1 (about 500K) to mount the image and drag the extension to your System folder. [JLC]

<ftp://ftp.info.apple.com/Apple_Support_Area/ Apple_SW_Updates/US/Macintosh/System/Mac _OS_7.6.1_Update/54xx-64xx_L2_Cache_ Reset.img.hqx>

<ftp://ftp.info.apple.com/Apple_Support_Area/ Apple_SW_Updates/US/Macintosh/Utilities/ Disk_Copy_6.1.2.sea.hqx>

 

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