Date   : Mon, 27 Dec 2010 01:53:56 +0100
From   : rick@... (Rick Murray)
Subject: DOS+ Econet software

On 26/12/2010 20:39, J.G.Harston wrote:

> ZNOS[1] for the Z80 CoPro does this, and yes it can make for some confused
> looking directory structures, especially if you start moving around.

I'm going from memory here, but I don't recall the FileStore doing much 
(if anything) in the way of caching directory information [*]. It seemed 
like doing a *. would result in a disc access. Doing this on a system 
that involves numerous subdirectories... ouch!


* - it is a shame, given the cost of the FileStore, that it didn't
     include some sort of paging mechanism ? la Master 128. Fitting the
     baby MOS, server code, and all user/server memory/caching into a
     single 64K lump must surely be tight. Perhaps a second 64K for
     caching (more) disc sectors and user/file/directory information
     would mean the gain of not reloading would more than offset the
     loss of speed in the paging process.


Best wishes,

Rick.

-- 
Rick Murray, eeePC901 & ADSL WiFI'd into it, all ETLAs!
BBC B: DNFS, 2 x 5.25" floppies, EPROM prog, Acorn TTX
E01S FileStore, A3000/A5000/RiscPC/various PCs/blahblah...