Motorola MVME2300 Series - Manual (Page 146)

2-76 Computer Group Literature Center Web Site
Raven PCI Bridge ASIC
2
The Soft Reset input to the MPC603 or MPC604 is negative-edge-
sensitive.
IPI Vector/Priority Registers
MASK Mask. Setting this bit disables any further interrupts from
this source. If the mask bit is cleared while the bit
associated with this interrupt is set in the IPR, the interrupt
request will be generated.
ACT Activity. The activity bit indicates that an interrupt has
been requested or that it is in-service. The ACT bit is set
to a 1 when its associated bit in the Interrupt Pending
register or In-Service register is set.
PRIOR Interrupt Priority. Priority 0 is the lowest and 15 is the
highest. Note that a priority level of 0 will not enable
interrupts.
VECTOR Interrupt Vector. This vector is returned when the
Interrupt Acknowledge register is examined during a
request for the interrupt associated with this vector.
Offset IPI 0 - $010A0
IPI 1 - $010B0
IPI 2 - $010C0
IPI 3 - $010D0
Bit 3
1 3
0 2
9 2
8 2
7 2
6 2
5 2
4 2
3 2
2 2
1 2
0 1
9 1
8 1
7 1
6 1
5 1
4 1
3 1
2 1
1 1
0 9 8 7 6 5 4 3 2 1 0
Name IPI VECTOR/PRIORITY
MA
S
K
ACT
PRIOR VECTOR
Operation
R/W R
R R/W R R/W
Reset
1 0
$000 $0 $00 $00