Hardware manual

2 Installation EUROCOM-17-5xx
42 Hardware Manual
2.3.7 Snooping of
Secondary CPU
(J1801)
If snooping of the secondary CPU is enabled via the snoop control register
SNCR, the /MI output of the secondary CPU must be observed (J1801 in
position 2-3).
If snooping of the secondary CPU is disabled or in single processor
systems, /MI of the secondary CPU can be ignored (J1801 in position
1-2).
2.3.8 VMEbus
Interrupts for
Secondary CPU
(J1703)
To enable interrupt handling on the VMEbus by the secondary CPU,
J1703 must be set to the corresponding level. Only one VMEbus interrupt
level can be handled by the secondary CPU! For more information, see
Section3.19.3 ‘VMEbus Interrupts for the Secondary CPU’.
Table21: J1801 (Snooping of Secondary CPU)
Jumper J1801 Function
1 - 2 Ignore /MI of secondary CPU
2 - 3 Observe /MI of secondary CPU
Table22: J1703 (VMEbus Interrupts for Secondary CPU)
Jumper J1703 Function
5 - 3 VMEbus interrupt level 7
1 - 3 VMEbus interrupt level 5
2 - 4 VMEbus interrupt level 3
6 - 4 VMEbus interrupt level 1
open No VMEbus interrupts for secondary CPU