Cards that Require Only CARDTALK.SYS4
Page 58
•
The MS-DOS DIR command always
shows 0 bytes free instead of the actual
free space.
True Flash File
System
(TFFS)
Error!
Reference source
not found.
Error!
Reference source
not found.
M-Systems provides a Card Services client
driver that allows you to store files on a Flash
card as if the card contained standard
read/write media. TFFS uses blocks of fixed-
length data that are indexed with a table.
Chapter 6
, Cards that Require Additional
Drivers
, explains how to use the True Flash
File System. You must use the M-Systems
utilities to prepare and copy to a card
formatted with TFFS.
SRAM Cards
An SRAM card is a memory storage device that requires a battery to
maintain the data stored on it. CardTalk treats SRAM cards as though
they were standard diskettes.
Refer Chapter 5,
Using the CardTalk Control Panel
, for information on
how to initialize cards and copy files.
Flash Cards
A Flash card is a memory storage device that does not require a battery
to retain its data.
Flash memory cards change and erase data differently than do SRAM
cards. These special characteristics make it difficult to use them with
the MS-DOS FAT file system, since MS-DOS expects the Flash card to
behave like a standard disk that is able to erase and rewrite data at any
time. To overcome this difficulty, several Flash File Systems have been
created. These systems provide MS-DOS with what seems like a
standard disk and allows you to copy and delete files without any
special procedures.
Three of the most commonly used Flash File Systems are:
•
M-Systems True Flash File System (TFFS)
•
SystemSoft/Microsoft Flash File System v2.00 (SS\MS FFS)
•
Microsoft Flash File System v2.0 (FFS2)
Summary of Contents for PC-250
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