[t13] Host Packet DMA diagram in ATAPI-6 revision 3b

[Constantine Sapuntzakis]

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Figure 33 on page 350:

The HPD1:HPD3 transition is not in SFF 8020i r2.6 and seems inconsistent
with the device diagram in Figure 34.
The transition seems to imply that the host should wait for an interrupt
before starting a DMA transfer. But in the device diagram (Figure 34),
no such interrupt is generated prior to a DMA transfer.
Also, SFF 8020i r2.6 does not require device to assert an interrupt
before starting a packet DMA (according to page 35)
-Costa