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> Homemade Modchip, questions about making your own chip
TPS
post Jun 13 2002, 11:38 AM
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Hi
I was wondering, if i want to use a 29F020 flash chip to my homemade chip, is 90 ns a resonable speed for the chip?
I want to use a chipprogammer to write the XTender 1.1 bios image to the chip, is there anything special i need to do/know?

About updating the Xbox bios:
I havent quite unterstand what you do, are you just writing the XTender 1.1 bios image to the Xbox bios?

Thanks
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Hammy
post Jun 13 2002, 11:54 AM
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Ok mate!

Same hassle here. I rang around today to try and find the right eprom
29f020 and i got a great reply for 1 supplier.mininum order of 190 chips at $5 each,stuff that as i only want 5 chips so i can program my chip with the motherboard trick and i will also make my programming board as the main tech at work told me that the swap trick will only work 50% of the time as it has to do with the contact pionts.something like if the 5 volt rail contact 1St you are stuffed so he told me how to make a simply double board with a switch so i can boot up the pc and then switch to the blank eprom and program it without any flash failing>

If i get this up and running i will post the double switch mod biggrin.gif

Good luck mate.
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Tommatt
post Jun 13 2002, 09:08 PM
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Moved to modchip chat.
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Duece
post Jun 13 2002, 10:44 PM
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On the homebrew install diagrams I am confused on one solder point. One is labeled 32 and the other is labeled link to 32. My question is do you solder the two points then solder a wire to pin 32 on the flashrom? Any input would be appreciated! wink.gif
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4NIC8TOR
post Jun 14 2002, 03:27 AM
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I soldered the two points together on the chip and then ran two wires...one to 32 and one to 'link to 32' (31).

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Blackout13
post Jun 14 2002, 03:57 AM
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I soldered a link between the two points on the board, then ran a wire from the point labeled "32" to pin 32 on the DIP.
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Duece
post Jun 14 2002, 05:08 PM
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Approaching the end......I don't have any electric tape here to tape up the mod, I remember seeing some wrapping theirs in paper. Is that safe?
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Blackout13
post Jun 14 2002, 06:32 PM
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I wrapped mine in electrical tape to insulate it from any possible contact with the casing. I also used double-sided foam tape to attach the chip to the board.
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4NIC8TOR
post Jun 14 2002, 07:00 PM
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I made my wires long enough to route it up behind the hard drive.
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TPS
post Jun 15 2002, 03:03 PM
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[QUOTE]Approaching the end......I don't have any electric tape here to tape up the mod, I remember seeing some wrapping theirs in paper. Is that safe? [QUOTE]

Paper will do it, but somthing to hold it tight to the board is needed. I use double sided tape and electrical insulating tape.

TPS
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noptical
post Jun 16 2002, 03:56 AM
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hey all, i was just looking around, and most places dont carry the 29F080, 29F040, or 29F020 chips anymore, and i was looking for some other model that i could replace it with and still write it to an old computers bios dip.
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4NIC8TOR
post Jun 16 2002, 05:27 AM
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http://www.newark.com/search/Description.j...jsp?sku=48F3605

There ya go...3 bucks.
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oddie
post Jun 18 2002, 11:49 PM
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My motherboard has a socket with the description "27010 flash" (32 pin), what kind of chip should i use ?

I think that is an Intel motherboard
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hevnsnt
post Jun 19 2002, 12:27 AM
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Any of the flash chips..

like 29F040-90 would work..
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XBoy
post Jun 19 2002, 06:03 AM
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I have a Pentium 100Mhz mobo (ASUS P55TP4XE -- uses the Intel 430FX chipset I believe) which UNIFLASH reports the flash rom as an Intel 28F001BX/BN-T/12V.

Can I use this board to flash some mod chips?

As well, I have another PentiumII BX board which reports the flash rom as a Macronix MX29L1611G/11V.

How about this one?
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