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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Any one who has any experience when using IDMA on mpc82xx? <br>
Currently, the status what I have got is, memory-to-memory mode, both Data bus
had been set to 60x-bus, which means DDTB and SDTB are working on 60x-bus. <span
class=GramE>if</span> set DMA_WRAP in DCM as 64-byte, SS_MAX,STS and DTS in
(IDMA Parameter RAM) all to 32 Bytes, there working good!<br>
But if set DMA_WRAP more than 64-<span class=GramE>byte(</span><span
class=SpellE>i.e</span> 256-bytes) ,SS_MAX,STS and DTS in (IDMA Parameter RAM)
all to 7*32 Bytes when WRAP = 256 . <span class=GramE>then</span> got some
issues:<br>
1. <span class=GramE>some</span> bytes in a packet had been changed oddly. <span
class=GramE>for</span> example if some bytes in the packet is "20 0f
17 2c...." after <br>
IDMA transmission , the bytes will be changed as "20 1d 17 2c", there
is a slightly different with "17" and "1d".<br>
2. <span class=GramE>some</span> bytes had been swapped , for example "20
0f 17 2c" , after transmission , the bytes in packet was "2c 17 0f
20".<br>
<span class=GramE>Any ideas?</span> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Is this the cache issue? I had enabled the snooping<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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