400Mbit is only achievable in a dream, all thanks to the IOP and the design fault in the i.Link DBUF FIFOs (Can't disable byte-swapping).
DMAC #3 doesn't seem to be present in the slimline PS2, so transfers will be really slow and taxing on the IOP. The SMAP will still rule the day in terms of stability and performance.
Honestly speaking, why would this discovery 'revive' interest in the Playstation 2? Most people won't care about it... like how my i.Link driver has been largely unused by the majority of the users here.
Device compatibility is mostly unknown as few people have i.Link/IEEE1394 enclosures, and not all of them gave compatibility reports for the last version of the driver set that was released.
It will help, however, if people are to help me to continue working on and improving the existing drivers. Other than the broken write support (Since the data has to be re-byte-swapped before it's sent over the IEEE1394 bus), things like the maximum transfer length are currently hardcoded (Poor performance and/or poor compatibility may result).
Unmodified SCPH-77006 with SM 3.6
SCPH-39006 with M-chip modchip, SCPH-10281 NA and refurb Seagate 80GB HDD
SCPH-10000 v1.00 with SCPH-10190 PCMCIA NA and SCPH-20400 HDD unit