The Playstation 2's National Semiconductor DP83846A Ethernet PHY is capable of the following modes:
Originally Posted by kadorna2
1. 10Mbit half-duplex
2. 10Mbit full-duplex
3. 100Mbit half-duplex
4. 100Mbit full-duplex
But on some Network Adaptors, this same National Semiconductor PHY screws up when the adaptor is connected to a Gigabit network... and auto-negotiation fails.
If you wait for a looooooonnnng time for it to time out, it will fall back towards 100Mbit, half-duplex mode. (At least, this happens in the SMAP driver that is hosted on the Index of / SVN server)
As for the poor performance offered by the OPL SMB server, it's probably caused by a lacked of DMA support in the SMAP driver (Hence, only ~1-2MB/s can be achieved with the 37MHz IOP).
At least, the OPL HDL Dump server lacks DMA support.... but it's probably the same thing for SMB support (Why would DMA support be implemented in-game driver but nowhere else? Hence, the same driver with the same limitations is probably used too).
Last edited by SP193; 02-17-2012 at 07:17 AM.
Reason: The DP83846A PHYs were manufactured by National Semiconductor, not NEC
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