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Programming Considerations Chapter 5
VXI-MXI User Manual 5-24 © National Instruments Corporation
5000 through 5FFF to MXIbus #3. For the VXI-MXI connected to MXIbus #3, we set Base
= 5000, Size = 4 because 4 KB = 256 * 2
8-4
, and the direction toward MXIbus #3, or Out.
14. The 4 KB assigned to MXIbus #3 is further divided between VXIbus Mainframes #4 and
#5. We assigned the bottom portion, 5000 to 57FF, to VXIbus Mainframe #4, and the next
portion, 5800 to 5BFF, to VXIbus Mainframe #5. Therefore, for VXIbus Mainframe #4, we
assign Base = 5000, Size = 5 because 2 KB = 256 * 2
8-5
, and Direction = In. For VXIbus
Mainframe #5, Base = 5800, Size = 6 because 1 KB = 256 * 2
8-6
, and Direction = In.
VXIbus
Mainframe
#1
VXI-MXI
VXI-MXI
VXIbus
Mainframe
#2
VXI-MXI
MXIbus
Device
A
MXIbus
Device
B
VXIbus
Mainframe
#3
VXI-MXI
VXI-MXI
VXIbus
Mainframe
#6
VXI-MXI
VXIbus
Mainframe
#4
VXI-MXI
VXIbus
Mainframe
#5
VXI-MXI
Level 1
Level 2
Multiframe
Resource
Manager
MXIbus #1
MXIbus #2
MXIbus #3
Figure 5-13. Example VXIbus/MXIbus System