Motorola MVME1X7P User Manual
Page 109
Functional Blocks
http://www.motorola.com/computer/literature
2-19
2
Each of the 31 interrupts can be enabled to generate a local bus interrupt at
any level. For example, VMEbus IRQ5 can be programmed to generate a
level 2 local bus interrupt.
The VMEbus AC fail interrupter is an edge-sensitive interrupter connected
to the VMEbus ACFAIL
∗
signal line. This interrupter is filtered to remove
the ACFAIL
∗
glitch which is related to the BBSY
∗
glitch.
The SYS fail interrupter is an edge-sensitive interrupter connected to the
VMEbus SYSFAIL
∗
signal line.
The write post bus error interrupter is an edge-sensitive interrupter
connected to the local-bus-to-VMEbus write post bus error signal line.
The VMEbus IRQ1 edge-sensitive interrupter is an edge-sensitive
interrupter connected to the VMEbus IRQ1
∗
signal line. This interrupter is
used when one of the tick timers is connected to the IRQ1
∗
signal line.
When this interrupt is acknowledged, the vector is provided by the
VMEchip2 and a VMEbus interrupt acknowledge is not generated. When
this interrupt is enabled, the VMEbus IRQ1 level-sensitive interrupter
should be disabled.
The VMEchip2 VMEbus interrupter acknowledge interrupter is an edge-
sensitive interrupter connected to the acknowledge output of the VMEbus
interrupter. An interrupt is generated when an interrupt on the VMEbus
from VMEchip2 is acknowledged by a VMEbus interrupt handler.
The tick timer interrupters are edge-sensitive interrupters connected to the
output of the tick timers.
The DMAC interrupter is an edge-sensitive interrupter connected to the
DMAC.
The GCSR SIG3-0 interrupters are edge-sensitive interrupters connected
to the output of the signal bits in the GCSR.
The location monitor interrupters are edge-sensitive interrupters connected
to the location monitor bits in the GCSR.
The software 7-0 interrupters can be set by software to generate interrupts.
The VMEbus IRQ7-1 interrupters are level-sensitive interrupters
connected to the VMEbus IRQ7
∗
-IRQ1
∗
signal lines.