Multi region piggy back mod - HELP

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Clur1981
noob
Posts: 3

Multi region piggy back mod - HELP

Post#1 » Sun Mar 19, 2017 7:51 pm

Could someone give some advice please?
I've soldered my new chip in ( on top of existing one)
I don't want a switch so can I hard wire it in without a switch before I load the software? Or does it need a switch??
Are there any advantages to being able to swop between multi region and PAL with a switch? Am I missing something lol.
Cheers in advance
Claire

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Maliki
lithium
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Re: Multi region piggy back mod - HELP

Post#2 » Sun Mar 19, 2017 9:06 pm

I would imagine without a switch you would be getting both at the same time. (Edit: Which I can't imagine working, but I know nothing about these chips specifically, I've been surprised before.)

How come you are not wanting to use a switch?

Advantage of the switch is you can choose between the two. Rather then one or the other full time.
Last edited by Maliki on Sun Mar 19, 2017 9:24 pm, edited 1 time in total.
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SEGA RPG FAN
Graffiti Grind
Posts: 311

Re: Multi region piggy back mod - HELP

Post#3 » Sun Mar 19, 2017 9:08 pm

We're probably going to need a lot more info and pics to know what you have done/are trying to do. Sounds like you're trying to use a chip like this? http://www.mmmonkey.co.uk/dreamcast-4-w ... p-install/
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Maliki
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Re: Multi region piggy back mod - HELP

Post#4 » Sun Mar 19, 2017 9:25 pm

He's talking about doing this one: http://www.mmmonkey.co.uk/sega-dreamcas ... free-bios/

Where you have one on top of the other, legs joined accordingly.
Kurupt FM wif a K like... 108.9 on ya dial u mugz <3

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Jako
killer
Posts: 266

Re: Multi region piggy back mod - HELP

Post#5 » Sun Mar 19, 2017 9:28 pm

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krssn
Vagabond
Posts: 735

Re: Multi region piggy back mod - HELP

Post#6 » Mon Mar 20, 2017 3:18 pm

No idea if you need a switch for the flash process, been too long since I did that. But afterwards if you only want to use the piggybacked bios, you don't need a switch. Just connect everything as if the switch would be in one position, without the switch...

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Jako
killer
Posts: 266

Re: Multi region piggy back mod - HELP

Post#7 » Tue Mar 21, 2017 2:47 am

Hi!
Sorry for the late reply, to flash the chip there are 2 ways:
-Flash alone the chip with a epprom programer and replace the original bios with it.
-With the 2 epproms connected to the console and the switch... IE boot in normal bios Dreamshell, go to the program that flash and swith to the empty epprom, at this moment you can write on the chip and store a custom bios, a different region, a Dreamshell boot loader...

So usefull! :-)
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