Bbram, Tod Clock Memory Map - Motorola MVME162 User Manual

BBRAM, TOD Clock Memory Map

The MK48T08 BBRAM (also called Non-Volatile RAM or NVRAM) is divided
into six areas as shown in Table 3-10. The first five areas are 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 is used by the operating
system. The fourth area is used by the MVME162 board debugger
(MVME162Bug). The fifth area, detailed in Table 3-11, is the configuration
area. The sixth area, the TOD clock, detailed in Table 3-12, is defined by the
chip hardware.
The data structure of the configuration bytes starts at $FFFC1EF8 and is as
follows.
struct brdi_cnfg {
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
char
}
MVME162/D2
version[4];
serial[12];
id[16];
pwa[16];
speed[4];
ethernet[6];
fill[2];
lscsiid[2];
mem_pwb[8];
mem_serial[8];
port2_pwb[8];
port2_serial[8];
ipa_brdid[8];
ipa_serial[8];
ipa_pwb[8];
ipb_brdid[8];
ipb_serial[8];
ipb_pwb[8];
ipc_brdid[8];
ipc_serial[8];
ipc_pwb[8];
ipd_brdid[8];
ipd_serial[8];
ipd_pwb[8];
reserved[65];
cksum[1];
Memory Maps
3-21
3