2 external autovectored interrupt requests, Table 2.8: external autovectored interrupts, 3 vme interrupt mask register – Kontron VM162 User Manual
Page 37
VM162/VM172
Chapter 2 Functional Description
Juli 23, 1997
Page 2- 15
© PEP Modular Computers
2.6.2.2 External Autovectored Interrupt Requests
Autovectored interrupts are all generated via the 68EN360 pins for external interrupt sources. They are
summarized in the table below. Care must be taken that the relevant 68EN360 register is initialised with
respect to the wiring (see also the Programming chapter in this manual).
Table 2.8: External Autovectored Interrupts
2.6.2.3 VME Interrupt Mask Register
The VME Interrupt Mask Register is a one byte wide register with read/write access situated at default
address CD 00 00 01 (HEX). All bits are cleared after reset.
Note: The firmware of the board initializes this register using the default parameters stored in the EE-
PROM.
Register Description
Source
68EN360 Pin
Autovector
ABORT/ACFAIL
IRQ7
7
TICK
IRQ6
6
Mailbox IRQ
IRQ5
5
SYSFAIL
IRQ3
3
Name
Value
Description
EN_IRQ7
EN_IRQ6
EN_IRQ5
EN_IRQ4
EN_IRQ3
EN_IRQ2
EN_IRQ1
SYSFAIL
1
1
1
1
1
1
1
1
Enable VME IRQ7
Enable VME IRQ6
Enable VME IRQ5
Enable VME IRQ4
Enable VME IRQ3
Enable VME IRQ2
Enable VME IRQ1
Enable VME SYSFAIL IRQ
Reserved
EN_IRQ3
Reserved
SYSFAIL
CS7 + $1
0
1
2
3
4
5
6
7
EN_IRQ7
EN_IRQ4
EN_IRQ5
EN_IRQ6