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- Newsgroups: comp.sys.apple2
- Path: sparky!uunet!comp.vuw.ac.nz!actrix!David.Empson
- From: David.Empson@bbs.actrix.gen.nz
- Subject: Re: RamFAST & GS/OS cache
- Organization: Actrix Information Exchange
- Date: Mon, 23 Nov 1992 11:38:09 GMT
- Message-ID: <1992Nov23.113809.19649@actrix.gen.nz>
- References: <fmlin.2ami@terapin.com> <uerics.722403504@mcl>
- Sender: David.Empson@actrix.gen.nz (David Empson)
- Lines: 15
-
- In article <uerics.722403504@mcl> uerics@mcl.ucsb.edu (Eric D. Shepherd) writes:
- > The GS/OS cache caches _everything_. Every block read from a cacheable
- > device is cached.
-
- Not necessarily. GS/OS will cache all directory blocks. Data blocks
- are only cached if the GS/OS Read call specifies a cachePriority of 1.
-
- Some devices are never cached (e.g. 5.25" drives). The device driver
- implements the caching, but it is requested by the application (for
- data blocks).
- --
- David Empson
-
- Internet: David.Empson@bbs.actrix.gen.nz EMPSON_D@kosmos.wcc.govt.nz
- Snail mail: P.O. Box 27-103, Wellington, New Zealand
-