Mass Storage Interfaces
EPM-19 Hardware Reference Manual
23
microSD Socket
The EPM
-
19 includes a microSD socket on the underside of the board. The VL-F41 series of
microSD cards provide solid-state storage of 2 GB, 4 GB, or 8 GB. The microSD socket
accommodates cards with up to 32 GB of storage capacity. No drivers are needed, as the device
interface is abstracted as a standard parallel IDE drive on the master IDE channel.
Figure 15. Location of the microSD Socket
Note the following when using a microSD card with the EPM
-
19:
The microSD card interface is not hot-pluggable. A microSD card will not be recognized as
part of the system if it is not plugged in before power is applied to the board or before a
push-button reset is applied. This is not a limitation of the EPM
-
19 board; it is a limitation of
the DX2 chip.
When a microSD card is inserted at power-up, the default boot setting is to boot from it (it is
primary), so if you don’t press <F11> right after applying power to the board, you will not be
able to select an alternate boot option; the board will “stall” for the lack of an operating
system (OS) if there isn’t one present on the microSD card.
The boot order can be changed in the BIOS Setup utility.
