Bbram/Tod Clock Memory Map; Table 1-15. Mk48T58 Bbram/Tod Clock Memory Map - Motorola MVME172 Programmer's Reference Manual

Board Description and Memory Maps
1

BBRAM/TOD Clock Memory Map

1-40
The MK48T58 BBRAM (also called Non-Volatile RAM or NVRAM) is
divided into six areas as shown in
defined by software, while the sixth area, the time-of-day (TOD) clock, is
defined by the chip hardware. The first area is reserved for user data. The
second area is used by Motorola networking software. The third area may
be used by an operating system. The fourth area is used by the MVME172
board debugger (MVME172Bug). The fifth area, detailed in
the configuration area. The sixth area, the TOD clock, detailed in
1-17, is defined by the chip hardware.

Table 1-15. MK48T58 BBRAM/TOD Clock Memory Map

Address Range
$FFFC0000 - $FFFC0FFF
$FFFC1000 - $FFFC10FF
$FFFC1100 - $FFFC16F7
$FFFC16F8 - $FFFC1EF7
$FFFC1EF8 - $FFFC1FF7
$FFFC1FF8 - $FFFC1FFF
Table 1-15. The first five areas are
Description
User Area
Networking Area
Operating System Area
Debugger Area
Configuration Area
TOD Clock
Computer Group Literature Center Web Site
Table 1-16, is
Table
Size (Bytes)
4096
256
1528
2048
256
8