Card Battery; Cards Prepared As Ram; Cards Prepared As Disk - Commodore Amiga A1200 User Manual

Memory Cards
4-3
the slot. You can use the point of a pen or a similar implement to
move the switch back and forth to write-protect or write-enable it.
Card Battery
Static RAM (SRAM) memory cards have a small battery to allow the
card to retain the data stored in the card's memory chips after it has
been removed. The batteries are long-lasting, but must eventually
be replaced when they run down for the card to continue
functioning.
Cards Prepared as RAM
When prepared as system
RAM,
the card memory is added to the
other memory in the Amiga, just as if additional memory were .
installed internally. Cards are available in many sizes, from 64 KB
to over a megabyte. A maximum of 4 MB of RAM may be added
using the card slot.
A memory card must be write-enabled and inserted before you boot
or reboot for its memory to be added to the Amiga's RAM. Card
memory is added to Fast memory. The total number of bytes of
available Fast RAM is shown in the Workbench screen title bar as
"other mem".
Cards Prepared as Disk
A card disk is used much as a floppy disk is used: you can read from
and write to the card as you normally do, from applications, the
Workbench, or the Shell. The contents of the card remain even
when you remove the card or turn off the Amiga. Read and write
operations using memory cards are very fast.
You can insert and remove the card while the Amiga is turned on.
However, wait a few seconds after attempting any card disk access
before you remove the card, to be sure the disk activity has finished.