Motorola MVME1X7P manual MPU Parity Error, MPU Offboard Error, MPU TEA Cause Unidentified

Models: MVME1X7P

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Programming Issues

MPU Parity Error

Description:

A DRAM parity error.

MPU Notification:

TEA is asserted during an MPU DRAM access.

Status:

Bit 9 of the MPU Status and DMA Interrupt Count register

 

in the VMEchip2 at address $FFF40048.

Comments:

After memory has been initialized, this error normally

 

indicates a hardware problem.

MPU Offboard Error

Description:

An error occurred while the MPU was attempting to access

 

an offboard resource.

MPU Notification:

TEA is asserted during offboard access.

Status:

Bit 8 of the MPU Status and DMA Interrupt Count

 

register.

 

Address $FFF40048

Comments:

This can be caused by a VMEbus timeout, a VMEbus

 

BERR, or a single-board computer VMEbus access

 

timeout. The latter is the time from when the VMEbus has

 

been requested to when it is granted.

MPU TEA - Cause Unidentified

Description:

An error occurred while the MPU was attempting an

 

access.

MPU Notification:

TEA is asserted during an MPU access.

Status:

Bit 10 of the MPU Status and DMA Interrupt Count

 

register.

 

Address $FFF40048

Comments:

No status was given as to the cause of the TEA assertion.

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Motorola MVME1X7P manual MPU Parity Error, MPU Offboard Error, MPU TEA Cause Unidentified