[Libre-soc-bugs] [Bug 826] Trial run of ethmac (freecores) layout.

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=826

--- Comment #11 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
removed from bug #850 and copied here to the appropriate bugreport


> * 256x32 SRAM for eth_mac

If that's supposed to hold a full ethernet packet, it's too small for the
standard ethernet frame size:

it needs to be at least 1522 bytes if we don't want to support jumbo frames
(the ethernet fields -- not just the payload -- are needed for full packet
capture like for wireshark):
https://en.wikipedia.org/wiki/Ethernet_frame

if we want to support jumbo frames we'll need 9022 bytes:
https://en.wikipedia.org/wiki/Jumbo_frame

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