Hi Allen and Linuxppc-embedded guru, Referring to your 31 May 2002 post to LinuxPPC about poor 8260 FCC Ether performance. Did you figure out why is the FCC so slow? We have encountered this problem as well. We use the newer MPC8270 with 400MHz clock and 200MHz CPM speed with BCM5222 PHY. It ended up running at only ~5Mbps on 100Mbps Ethernet line. We just tried 1 FCC.
Does anyone on this post see the same problem? We use linux 2.4.18 with PPC pqii driver (somehow the other driver didn't seem to work for all 3 FCC's) We also tried on Motorola 8260 eval board and the result is the same. We also tried MEN Micro F6, it gave better result from 11MBps to 30Mbps. We also tried just uboot to eliminate Linux out of the picture and the result was about the same. I was about to give up on this MPC8270 then I saw this post so I thought I try. I cannot believe that Motorola would make a chip that support 3 FCC's but can only run at this ridiculous speed. I am software engineer, this could be hardware. Can anyone help me on this? I'm about to have to change the processor to PowerPC 4xx. Thanks in advance. Regards, Adisorn Ermongkonchai ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
