Local Bus To Vmebus Enable Control Register - Motorola MVME162FX Programmer's Reference Manual

GCSR Board These bits define the board number portion of the

Local Bus to VMEbus Enable Control Register

ADR/SIZ
BIT
NAME
OPER
RESET
This register is the map decoder enable register for the four
programmable local bus to VMEbus map decoders.
EN1
EN2
EN3
EN4
GCSR address. These bits are compared with
VMEbus address lines A4 through A7. The GCSR is
enabled by values $0 through $E. The address
$XXFY in the VMEbus A16 space is reserved for the
location monitors LM0 through LM3. Note: XX is the
group address and Y is the location monitor (1,LM0;
3,LM1; 5,LM2; 7,LM3).
$FFF4002C (4 bits of 32)
When this bit is high, the first local bus to VMEbus
map decoder is enabled. When this bit is low, the
first local bus to VMEbus map decoder is disabled.
When this bit is high, the second local bus to
VMEbus map decoder is enabled. When this bit is
low, the second local bus to VMEbus map decoder is
disabled.
When this bit is high, the third local bus to VMEbus
map decoder is enabled. When this bit is low, the
third local bus to VMEbus map decoder is disabled.
When this bit is high, the fourth local bus to VMEbus
map decoder is enabled. When this bit is low, the
fourth local bus to VMEbus map decoder is
disabled.
LCSR Programming Model
19 18 17
EN4 EN3 EN2
R/W R/W R/W
0 PSL 0 PSL 0 PSL
2
16
EN1
R/W
0 PSL
2-49