[En-Nut-Discussion] Compatibility Problem Between Rev. F and Rev. G

[Harald Kipp]

Hello Diamantopoulos,

the main difference is EEPROM emulation, which is new to Rev-G.
There are several options:

1. Hardware modification
Take a look to schematic page 3. Removing R7 and mounting
R37 (on the bottom side) makes the board Rev-F compatible.

2. Software upgrade
Download version 3.9.2 from
http://www.ethernut.de/en/download.html
Choose ethernut13g.conf with the Configurator
http://www.ethernut.de/en/nutconf/index.html
to build the new system. This will work with
Rev-F and Rev-G boards.

3. Software modification
Replace dev/nicrtl.c with
http://cvs.sourceforge.net/viewcvs.py/*checkout*/ethernut/nut/dev/nicrtl.c?rev=1.8
in the Nut/OS version you are currently using.
Again, this will work with Rev-F and Rev-G

The advantage with Rev-G and the new software is, that
the RTL8019 will run in half duplex mode, which makes
Ethernet transfers much more reliable with standard
switches.

egnite will not continue Rev-F, but in case you refuse to change
your software or do the hardware mod yourself, you can order modified
Rev-G boards with R37 mounted and R7 removed.

Harald


At 16:26 18.10.2004 +0300, you wrote:
>Hello to everyone,
>
>I have been developing a program (which runs on ethernut 1.3 Rev. F)
>for the company that I work. This program makes full use of the UART, LAN 
>and all the I/O (Digital and analog). I have produced a Hex  file which 
>when uploaded to an ethernut board Rev. F works just fine but when 
>uploaded to Rev. G it does not work (I cannot use the ethernet to 
>communicate with the board) . To be even more precise when my program 
>start its execution for the first time I am using a socket connection (to 
>a predefined IP) in order  to program the ethernut with some initial 
>values (such as IP, Device Number etc.), a step which works just fine with 
>Rev. F  as I have already mentioned, but does not work when the board is 
>of  Rev. G.
>- First of all I do want to ask if anyone has any kind of Idea why this is 
>happening ?, and
>- If the Rev. F will be a discontinued version?
>
>Thank you all in advance.