I received my DSerial edge today and unfortunately it seems that it causes Slot-2 RAM to not be detected, which is a shame. I'll have a look to see if I can figure out why, but I can't see anything obvious so far. memtestARM can be booted from the DSerial and recognises my Supercard properly. I added a few printk's to gbaram.c and I see the following:<br>
<br><a href="http://dslinux.gits.kiev.ua/trunk/linux-2.6.x/arch/arm/mach-nds/gbaram.c">http://dslinux.gits.kiev.ua/trunk/linux-2.6.x/arch/arm/mach-nds/gbaram.c</a><br><br>Memory management: Non-Paged(unused/noMMU)<br>DEBUG Activate RAM<br>
DEBUG EZ Detect<br>DEBUG testram<br>DEBUG testram<br>DEBUG testram<br>DEBUG Testcard<br>DEBUG testram<br>DEBUG Testcard<br>DEBUG testram<br>DEBUG Testcard<br>DEBUG testram<br>DEBUG Testcard<br>DEBUG testram<br>Ignoring unrecognised tag 0x00000000<br>
<br>Basically it's either not sending the command out right to unlock it, or when it goes to test it fails. A good dmesg looks like this (Booted with Acekard, Supercard SD in Slot-2):<br><br>Memory management: Non-Paged(unused/noMMU)<br>
DEBUG Activate RAM<br>DEBUG EZ Detect<br>DEBUG testram<br>DEBUG testram<br>DEBUG testram<br>DEBUG Testcard<br>DEBUG testram<br>DEBUG Found RAM<br>Ignoring unrecognised tag 0x00000000<br><br>I've looked at the source of memtestARM and it appears to test in the same sequence we do (ez, Supercard, m3, Opera, G6) so I'm getting a little stumped. Unsurprisingly a lot of source is shared with memtestARM and linux-2.6.x/arch/arm/mach-nds/gbaram.c, so one would it expect it to work.<br>
<br>I spoke to natrium42 briefly on IRC and he mentioned that maybe we don't setup registers properly?<br><br>Anyway, I'll carry on prodding, I'll have a lot of time being bored in hotel rooms over January and February and I've got myself a few books to try and learn a bit more, so hopefully I should be able to get rs232 possible.<br>
<br>Hope you all have a nice christmas/holidays/whatever the politically correct phrase is nowadays<br><br>:-)<br>