Vmebus interrupter vector register, Mpu status and dma interrupt count register, Vmebus interrupter vector register -63 – Motorola MVME172 User Manual

Page 141: Mpu status and dma interrupt count register -63, Interrupt level register 3 (bits 0-7) -94

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LCSR Programming Model

http://www.mcg.mot.com/literature

2-63

2

VMEbus Interrupter Vector Register

This register controls the VMEbus interrupter vector.

MPU Status and DMA Interrupt Count Register

This is the MPU status register and DMAC interrupt counter.

MLOB

When this bit is set, the MPU received a TEA and the
status indicated off-board. This bit is cleared by writing a
one to the MCLR bit in this register.

MLPE

When this bit is set, the MPU received a TEA and the
status indicated a parity error during a DRAM data
transfer. This bit is cleared by writing a one to the MCLR
bit in this register. This bit is not defined for MVME172
implementation.

MLBE

When this bit is set, the MPU received a TEA and
additional status was not provided. This bit is cleared by
writing a one to the MCLR bit in this register.

MCLR

Writing a one to this bit clears the MPU status bits 7, 8, 9
and 10 (MLTO, MLOB, MLPE, and MLBE) in this
register.

ADR/SIZ

$FFF40048 (8 bits of 32)

BIT

23

. . .

16

NAME

Interrupter Vector

OPER

R/W

RESET

$0F PS

ADR/SIZ

$FFF40048 (8 bits of 32)

BIT

15

14

13

12

11

10

9

8

NAME

DMAIC

MCLR

MLBE

MLPE

MLOB

OPER

R

C

R

R

R

RESET

0 PS

0 PS

0 PS

0 PS

0 PS

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