Figure 3-12. Digitizer Registers in A16 and A24 Address Space

Note The following information on determining the data register address is based on the computer configuration shown in Figure 3-12, and on address mapping as performed by the HP E1406 Command Module’s resource manager. For configurations with embedded controllers or configurations with a resource manager other than the HP E1406 Command Module, refer to those manual(s) containing information on A24 address mapping.

Determining the A24 There are three ways to determine the digitizer’s A24 base address:

Base Address

1.Note the base address assigned by the resource manager at power-on. The HP E1406 resource manager configuration sequence can be monitored using an RS-232 terminal or printer. The "C-Size VXIbus Systems Installation and Getting Started Guide" contains information on connecting a terminal.

Chapter 3

Understanding the HP E1429 Digitizer 147

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HP E1429A manual Base Address, Digitizer Registers in A16 and A24 Address Space