* pc file server kernel: caveats
@ 1995-08-08 20:39 forsyth
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From: forsyth @ 1995-08-08 20:39 UTC (permalink / raw)
the pc file server kernel's ether509 driver needs similar changes
to /sys/src/9/pc/ether509.c: specifically, it needs to loop until
there aren't any more interrupts waiting. otherwise, under load
it can suddenly stop seeing further interrupts and things time out.
i have the impression that this is more likely to happen with the
newer 3c509b than with the original 3c509.
the pc file server decides my 16 Mbyte AMD486dx4/100 (no-obvious-name clone) motherboard
has 256 Mbytes (would be nice). not surprisingly, it then blows up in iobufinit.
i've no idea what the m/board is doing that causes the probe
not to detect that the memory subsystem has wrapped the
addresses; perhaps this board doesn't do the usual thing.
it's happy if the probe is limited to 128 Mbytes.
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