LCSR Programming Model

 

 

 

 

 

VMEbus Interrupter Vector Register

 

 

 

 

 

 

 

ADR/SIZ

 

$FFF40048 (8 bits of 32)

 

 

 

 

 

 

 

BIT

23

. . .

16

 

 

 

 

 

 

NAME

 

Interrupter Vector

 

 

 

 

 

 

 

OPER

 

R/W

 

 

 

 

 

 

 

RESET

 

$0F PS

 

 

 

 

 

 

This register controls the VMEbus interrupter vector.

MPU Status and DMA Interrupt Count Register

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

 

 

 

 

 

 

 

 

 

 

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.

2

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

2-63

Page 141
Image 141
Motorola MVME172 manual VMEbus Interrupter Vector Register, MPU Status and DMA Interrupt Count Register