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Board Description and Memory Maps
1
DMAC Off-board Error
DMAC LTO Error
1-44
Description:
Error encountered while the local bus side of the DMAC was
attempting to go to the VMEbus.
MPU Notification:
DMAC interrupt (when enabled).
Status:
The DLOB bit is set in the DMAC Status Register (address
$FFF40048 bit 4).
Comments:
This is normally caused by a programming error. The local bus
address of the DMAC should not be programmed with a local bus
address that maps to the VMEbus. If the TBL bit is set (address
$FFF40048 bit 2) the error occurred during a command table access,
otherwise the error occurred during a data access.
Description:
A local bus time-out (LTO) occurred while the DMAC was local bus
master.
MPU Notification:
DMAC interrupt (when enabled).
Status:
The DLTO bit is set in the DMAC Status Register (address
$FFF40048
bit 3).
Comments:
This indicates the DMAC attempted to access a local bus address at
which there was no resource. If the TBL bit is set (address
$FFF40048 bit 2) the error occurred during a command table access,
otherwise the error occurred during a data access.
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