User`s guide

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)