Motorola MVME2300 Series 用户手册
Raven Registers
http://www.motorola.com/computer/literature
2-43
2
PCI Interrupt Acknowledge Register
PIACK
PCI Interrupt Acknowledge. Performing a read from
this register will initiate a single PCI Interrupt
Acknowledge cycle. Any single byte or combination of
bytes may be read from, and the actual byte enable pattern
used during the read will be passed on to the PCI bus.
Upon completion of the PCI interrupt acknowledge cycle,
the Raven will present the resulting vector information
obtained from the PCI bus as read data.
this register will initiate a single PCI Interrupt
Acknowledge cycle. Any single byte or combination of
bytes may be read from, and the actual byte enable pattern
used during the read will be passed on to the PCI bus.
Upon completion of the PCI interrupt acknowledge cycle,
the Raven will present the resulting vector information
obtained from the PCI bus as read data.
MPC Slave Address (0,1 and 2) Registers
To initiate a PCI cycle from the MPC bus, the MPC address must be
greater than or equal to the START field and less than or equal to the END
field.
greater than or equal to the START field and less than or equal to the END
field.
Address
$FEFF0030
Bit
0 1 2 3 4 5 6 7 8 9
1
0
0
1
1
1
1
2
2
1
3
3
1
4
4
1
5
5
1
6
6
1
7
7
1
8
8
1
9
9
2
0
0
2
1
1
2
2
2
2
3
3
2
4
4
2
5
5
2
6
6
2
7
7
2
8
8
2
9
9
3
0
0
3
1
1
Name
PIACK
Operation
R
Reset
$00000000
Address
MSADD0 - $FEFF0040
MSADD1 - $FEFF0048
MSADD2 - $FEFF0050
Bit
0 1 2 3 4 5 6 7 8 9
1
0
0
1
1
1
1
2
2
1
3
3
1
4
4
1
5
5
1
6
6
1
7
7
1
8
8
1
9
9
2
0
0
2
1
1
2
2
2
2
3
3
2
4
4
2
5
5
2
6
6
2
7
7
2
8
8
2
9
9
3
0
0
3
1
1
Name
MSADDx
START
END
Operation
R/W
R/W
Reset
$0000
$0000