Hi Sean,
My typo; KF should have been MB.
Cheers,
Joseph The finals are approaching and I'm desp
----- Original Message -----
From: Joseph Lee <[EMAIL PROTECTED]
To: "Sean Ray" <[EMAIL PROTECTED]>,
[EMAIL PROTECTED],[EMAIL PROTECTED],
[email protected]
Date sent: Wed, 11 Jun 2008 23:53:38 -0700
Subject: Re: [Braillenote] Suggestion about feature for FlashDisk
Hi Sean,
I guess you can say that.
BrailleNote Classic has 16 MB RAM and 16 MB Flash (the oldest
models have 8 AM Flash); The PK has 40 MB RAM and 16 MB Flash;
mPower has 64 MB RAM and 128 KF Flash. All models, due to
Windows CE version installed, has 32 MB of virtual memory. (it
is somewhat hard to explain virtual memory...)
Cheers,
Joseph
----- Original Message -----
From: "Sean Ray" <[EMAIL PROTECTED]
To: "Joseph Lee" <[EMAIL PROTECTED]>,"Alana Jovanovski"
<[EMAIL PROTECTED]>,<[email protected]
Date sent: Wed, 11 Jun 2008 23:34:34 -0700
Subject: Re: [Braillenote] Suggestion about feature for FlashDisk
Hi Joseph,
Thanks for your help. so it sounds like if the file is too big
for the ram
then that's where we run into problems? I have forgotten... How
much RAM is
on the BN?
Thanks.
Friends,
Sean
----- Original Message -----
From: "Joseph Lee" <[EMAIL PROTECTED]
To: "Alana Jovanovski" <[EMAIL PROTECTED]>;
<[email protected]
Sent: Wednesday, June 11, 2008 11:26 PM
Subject: re: [Braillenote] Suggestion about feature for FlashDisk
Hi Alana and Sean,
Actually, there already is such thing. This is called ware
leveling
(sorry for misspelling there). The Flash chip, unlike hard
disks, does
not have moving parts. Thus, you don't really have to "scan the
disk" to
see if there are errors. Instead, the flash disk driver
corrects errors
by itself. I don't know how it works exactly (I'm not that
experienced
like some folks here), but some techniques of marking sectors is
involved.
As to large files, yes, it is the fact that the file is somewhat
large.
For a large file like Bible, only part of the file is loaded
onto RAM.
When doing a find command, the operating system will tell the
flash disk
to get the file ready for searching operations. It needs to
load the
require parts, search it and unload it from program memory.
This takes
time, because RAM is extremely fast compared to some flash
technology (I
don't know the exact figures though). Since BrailleNote cannot
handle a
huge file, it will try to load the whole thing to RAM, which it
cannot do
because of scarcity of RAM - thus creating lockups. I don't
know whether
it is called "buffer overflow" or whatever - I hope some other
"experienced" folks would help out here.
I have just begun learning about C plus plus (which KeySoft is
written
in), so my knowledge is somewhat limited...
Cheers,
Joseph P.S. That "CPP" came from personal conversations with
Jonathan
Sharp.
----- Original Message -----
From: "Alana Jovanovski" <[EMAIL PROTECTED]
To: <[email protected]
Date sent: Thu, 12 Jun 2008 15:44:08 +1000
Subject: [Braillenote] Suggestion about feature for FlashDisk
Hi,
I suggest that there should be some kind of scan utility for
FlashDisk to
look for errors and do any repairs. Also, I like the suggestion
of a warning
about a file being too big for the BN to handle.
Alana
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