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Re: [Qemu-devel] [patch] More PCI ethernet emulations
From: |
Stefan Weil |
Subject: |
Re: [Qemu-devel] [patch] More PCI ethernet emulations |
Date: |
Wed, 28 Mar 2007 22:56:07 +0200 |
User-agent: |
IceDove 1.5.0.10 (X11/20070307) |
Good question. I stumbled about this, too, when I looked
at the code how I could apply your patch. Some months
had past since I wrote it :-)
The code writes to a serial EEPROM, so the 16 bits are
sent using only a clock and a single data bit. The
EEPROM emulation then takes the single bits and puts
them together.
The function gets a byte which contains clock, data and
two other significant bits, and 4 bits which are always 0.
When called with a word, only one byte is needed.
Maybe it is the wrong one - if you work with different
endianess.
I'l have a look at the other problems next weekend.
Stefan
Ben Taylor wrote:
> I have a question. in eepro100_write2, I see a word (16-bits) being
> passed in, but only the low part of the word gets written to the eeprom.
> Since it's a word write, shouldn't it be writing both bytes to the eeprom?
>
> Ben