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Chapter 4 Register Descriptions
© National Instruments Corporation 4-33 GPIB-1014 User Manual
Hidden Registers
The hidden registers are loaded through the Auxiliary Mode Register (AUXMR). AUXMR[7-5]
is loaded with the hidden register number, and AUXMR[4-0] is loaded with the data to be
transferred to the hidden register. The hidden registers cannot be read, and in some cases the
contents are setable only; that is, they can be cleared or reset to initialized conditions only by
issuing the Chip Reset auxiliary command, by a Power On Reset, or by LMR (CR0[2]w). Figure
4-2 earlier in this chapter shows the five hidden registers and illustrates how they are loaded with
data from the AUXMR.