RTD Embedded Technologies, Inc.
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78
DMx820 User’s Manual
24
Reading 0 indicates the Direct Master was the
Bus Master during a Master or Target Abort.
Yes
No
1
1
25
Reading 0 indicates that DMA Channel 0 was the
Bus Master during a Master or Target Abort.
Yes
No
1
1
26
Reading 0 indicates that DMA Channel 1 was the
Bus Master during a Master or Target Abort.
Yes
No
1
1
27
Reading 0 indicates that the PCI 9056 asserted a
Target Abort after 256 consecutive Master
Retries to a Target.
Yes
No
1
1
28
Reading 1 indicates that the PCI Bus wrote data
to MBOX0. Enabled only if the Mailbox Interrupt
Enable bit is set (INTCSR[3]=1).
Yes
No
0
0
29
Reading 1 indicates that the PCI Bus wrote data
to MBOX1. Enabled only if the Mailbox Interrupt
Enable bit is set (INTCSR[3]=1).
Yes
No
0
0
30
Reading 1 indicates that the PCI Bus wrote data
to MBOX2. Enabled only if the Mailbox Interrupt
Enable bit is set (INTCSR[3]=1).
Yes
No
0
0
31
Reading 1 indicates that the PCI Bus wrote data
to MBOX3. Enabled only if the Mailbox Interrupt
Enable bit is set (INTCSR[3]=1).
Yes
No
0
0