Removing the Cache

To remove the Cache from the system:

ProDOS 8

Cold boot your computer by doing either of the following:

-> Press and hold down the control and open-apple

keys (- ) while pressing and releasing the reset key.

-> Power down--turn off the computer, then power up--turn it back on.

After you cold boot, access the Desk Accessories menu and note that the AE Cache option is gone.

ProDOS 16

Remove the AECACHE . SETUP file from the System. Setup

file and reboot or cold boot from a boot disk that doesn’t have the AECACHE . SETUP file installed.

About the Cache

Part of the reason the Cache is so incredibly fast at retrieving information is that it allows ProDOS to read a whole track every time it accesses the disk drive instead of reading individual blocks. This method, called, track caching, makes even the initial read much faster--up to twice as fast as a system without a cache. All subsequent calls are sped up even more because the system does not have to access the disk drive every time you request information. In fact, subsequent accesses are often faster than accesses from a RAM Disk!

The Cache installs itself onto the Smart Port and will operate with ProDOS 8, ProDOS 16, Apple Pascal 1.3, and

Æ’s PC program for CP/AM. It uses some of the expanded memory for itself plus the amount of memory you allocate to it.

When the cache program reads a track, it stores the entire track in the Track Buffer and stores the block(s) containing the requested information in another buffer, the Cache Buffer. You can set the Cache Buffer to the size you want, depending upon the memory size of your GS-RAM card and how much of that memory you have allotted for use as a RAM Disk.

Chapter Seven - Æ Cache

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