Technical data

Register Descriptions
MVME4100 Single Board Computer Programmer’s Reference (6806800H19B)
32
F_WP_SW Software Flash Bank Write Protect. This bit provides software-controlled protection
against inadvertent writes to the flash memory devices. A set condition indicates that
the entire flash is write-protected. A cleared condition indicates that the flash bank is
not write-protected, only when the HW write-protect bit is not set. This bit is set
during reset and must be cleared by the system software to enable writing of the flash
devices.
MAP_SEL Memory Map Select. When this bit is cleared, the flash memory map is controlled by
the Flash Boot Block Select switch (see the MVME4100 Installation and Use manual for
switch settings). When the Map Select bit is set, boot block A is selected and mapped
to the highest address (see Figure 3-1).
RSVD Reserved for future implementation.
Figure 3-1 Boot Flash Bank
A
B
FFFF_FFFF
FFF0_0000
FFEF_FFFF
FFE0_0000
FFDF_FFFF
FF00_0000
B
A
Boot block A is selected
Boot block B is selected