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VXI Programming Using the IEEE 1394 Serial Bus 49Chapter 3
Example Programs The following examples show an application using the E8491A’s shared
memory. In the program, 8,000 readings are taken with the HP E1410
multimeter. Because the E1410 has only enough memory to store 4,096
readings internally, all 8,000 readings are stored in shared memory and then
transferred to the PC. Given the shared memory size of 128 kBytes and the
E1410 storage format of eight bytes/reading, up to 16,000 readings can be
stored.
Figure 3-4 illustrates the reading transfers performed with the following
programs.
Figure 3-3. Partial Listing of Resource Manager Output Showing Shared Memory Mapping.
starting address of E8491A shared
memory (hexadecimal)