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SMP7500 Programming
19
Example 2
LA
(decimal)
Divide
by 16
MSB LSB
200
200 / 16 = 12
w/ 8 remaining
Divide by 16.
=
1100
1000
Convert to MSB and LSB.
=
C
8
Convert to hexadecimal. Set the back
switch to C and the front switch to 8.
0
1
2
3
4 5 6
7
8
9
A
B
C
D
E
F
0
1
2
3
4
5 6
7
8
9
A
B
C
D
E
F
BACK
FRONT
F
IGURE
2-2:
L
OGICAL
A
DDRESS
E
XAMPLE
2
Set the address switches to
FF
(factory default) for dynamic configuration. Upon power-up, the
resource manager will assign a logical address. See Section F - Dynamic Configuration in the
VXIbus Specification
for further information.
There is only one logical address per SMIP
II
base unit. Address assignments for individual
modules are handled through the A24/A32 address space allocation.
S
ELECTING THE
E
XTENDED
M
EMORY
S
PACE
The Extended Memory Space of the SMIP
II
is set by a dip-switch that is located on the bottom
edge of the interface card. Position 1, located to the left on the dip-switch, selects between A24
and A32 memory address space. In the UP position, the SMIP
II
will request A24 space. In the
DOWN position, the SMIP
II
will request A32 space. (Position 2 is not currently used.) The
selection of the address space should be based upon the memory allocation requirements of the
system that the SMIP
II
module will be installed. The amount of memory allocated to the SMIP
II
module is independent of the address space selected.
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