Multiversion Compatible Tsop Tutorial
Posted 24 April 2003 - 04:17 AM
A much better way is to make a switch that switches from A19-->ground & A19-->vcc. This forces the box to only read from half the tsop at a time without comparing different parts of the tsop. The easiest way I have found to connect A19 to vcc is to use this point on the lpc:
(pic is from the back of the mobo)
I would suggest flashing the bios for the first time without the switch installed first because once installed (like I said before) the xbox can only read or write to half at a time. Ground will be top half, VCC will be bottom half. But after the switch is fully working you can flash half of the bios at a time with evox. Just boot up the box and have a 512k size bios in c:bios and you can then flash half of your tsop at a time.
I have tried this on both a v1.0 and a v1.1 and both have worked fine just make sure you use the correct original bios for each. I also see no reason why this wouldnt work with a switch on both A18 and A19. Then you could switch to 4 different bios banks and could flash to each bank at a time.
Anyways I hope more people were interested in something like this besides myself.
Posted 24 April 2003 - 12:11 PM
I'll try this when I get home.
Edited by craigncheri, 24 April 2003 - 12:50 PM.
Posted 24 April 2003 - 01:03 PM
Posted 24 April 2003 - 02:23 PM
i've tried many times doing a multibios setup switching a19 to ground but never switched it to +vcc also.
Edited by craigncheri, 24 April 2003 - 02:26 PM.
Posted 24 April 2003 - 08:36 PM
Posted 24 April 2003 - 09:13 PM
retail + retail + evox d6 + evox d6
works great, thanks for the info and figuring this out.
Posted 24 April 2003 - 10:52 PM
Posted 25 April 2003 - 12:49 AM
Posted 25 April 2003 - 01:04 AM
Has anyone tried to use both the A18+A19 so the could have the orig+orig+evoxd6+x2. Or would this not work ?
Edited by 52volts, 25 April 2003 - 01:38 AM.
Posted 25 April 2003 - 11:09 AM
post your results
I would recomend first testing
x2+x2+evox d6+x2 4796
that way if the d6+x2 portion doesn't work you could still boot to the lower half the tsop and then fix the top half.
Posted 25 April 2003 - 02:23 PM
Posted 25 April 2003 - 08:45 PM
Posted 25 April 2003 - 10:26 PM
Posted 25 April 2003 - 10:29 PM
you either need a 29 pin homebrew for a 1.1 or 007 + memory card hack.
both these have worked for me.
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