A24 Offset Register; Interrupt Selection Register - HP E2270A User's And Scpi Programming Manual

A24 Offset Register

Interrupt Selection
Register
Bit Definitions
Chapter 4
Ready -- Reading a logic "1" from this bit means the M-Module is ready to
accept commands--a logic "0" means the M-Module is busy and is not ready
to accept commands.
Passed -- Reading a logic "1" from this bit means the M-Module passed its
self-test--reading a logic "0" means it failed.
This register contains the value of the base address necessary to access the
M-Module's A24 address space.
Table 4-5. A24 Offset Register (Read Only) Base + 06
Bit Number
Bit Name
This register specifies which interrupt line the M-Module will use. HP
Command Modules service interrupt line 1 by default, so normally you do
not need to change the interrupt line.
Table 4-6. Interrupt Selection Register (Read/Write) Base 20
Bit Number 15 - 04
Bit Name Reserved Interrupt Type VXI Interrupt Line
Interrupt Type -- This bit determines which type of interrupt the
M-Module supports. A logic "0" indicates the M-Module supports interrupt
types A and B. A logic "1" indicates interrupt type C (type C is the default
and also the type supported by the Switch M-Modules).
VXI Interrupt Line -- These bits determine which interrupt line is used by
the M-Module.
Bits 2, 1, 0
000
001
010
011
100
101
110
111
15 - 00
A24 Base Address
03 02 - 00
Interrupt Line
None (interrupt disabled)
IRQ1 (default)
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
Register Programming
h
h
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