Gage CompuScope 14100C, Hardware Manual And Driver Installation Manual

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Memory organization on CompuScopes (except for CS85GC) 23
This situation is illustrated below:
Figure 17: Pre-Trigger: not all data points in buffer valid
This condition can be detected by looking at the RAMFULL bit in the STATUS register. This bit is reset to
ZERO when a
start_capture command is issued and is set to ONE when the memory counters overflow from
FFFFF to ZERO, for example.
In this case, Pre-Trigger data lies between ZERO and Trigger Address, and Post-Trigger between Trigger
Address and End Address.
These issues are handled seamlessly by the driver and the Software Development Kits (SDKs).