Motorola MVME2300 Series 用户手册

Raven Registers

http://www.motorola.com/computer/literature

2-39

MPC Error Status Register

OVF

Error Status Overflow. This bit is set when an error is
detected and any of the error status bits are already set.
The bit may be cleared by writing a 1 to it; writing a 0 to
it has no effect.

MATO

MPC Address bus Time-Out. This bit is set when the
MPC address bus timer times out. The bit may be cleared
by writing it to a 1; writing it to a 0 has no effect. When
the MATOM bit in the MEREN register is set, the
assertion of this bit will assert MCHK to the master
designated by the MID field in the MERAT register. When
the MATOI bit in the MEREN register is set, the assertion
of this bit will assert an interrupt through the MPIC
interrupt controller.

PERR

PCI Parity Error. This bit is set when the PCI PERR

∗

is asserted. The bit may be cleared by writing it to a 1;
writing it to a 0 has no effect. When the PERRM bit in the
MEREN register is set, the assertion of this bit will assert
MCHK to the master designated by the DFLT bit in the
MERAT register. When the PERRI bit in the MEREN
register is set, the assertion of this bit will assert an
interrupt through the MPIC interrupt controller.

Address

$FEFF0024

Bit

0 1 2 3 4 5 6 7 8 9

1
0

1
1

1
2

1
3

1
4

1
5

1
6

1
7

1
8

1
9

2
0

2
1

2
2

2
3

2
4

2
5

2
6

2
7

2
8

2
9

3
0

3
1

Name

MERST

OVF

PERR

SERR

SMA

RT
A

Operation

R/
C

Reset

$00