Vxi offset register – HP E1418A User Manual

Page 129

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Passed: A one (1) in this field indicates the module has finished a reset or
has completed module initialization. A zero (0) in this field indicates the
module is executing a reset or has failed module initialization.

WRITE

A24 EN: Writing a one (1) to this field enables access to the A24 address
space via A24 addressing. Writing a zero (0) to this field disables access to
the A24 address space.

SYSINH: Writing a one (1) to this field disables the module from driving
the VXIbus SYSFAIL* line. Writing a zero (0) enables the module to drive
SYSFAIL*.

RESET: Writing a one (1) and then a zero (0) to this field performs a
module reset. Writing a one (1) to this field forces the module into the reset
state. The module is held in the reset state until a zero (0) is written to this
field.

VXI Offset Register

The VXI Offset Register is a VXIbus required register. The offset register
defines the base address of the module’s A24 address space.

Address

Base + 06

16

Bit

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

READ

A24 Offset

0

0

0

0

0

0

0

0

0

0

WRITE

A24 Offset

0

0

0

0

0

0

0

0

0

0

A24 Offset: This field is the six most significant bits of the module’s A24
base address.

Bits 0 through 9 are always zero (0).

128 HP E1418A Register-Based Programming

Appendix B

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