Unknown hardware modification

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Retrojaner
dark night
Posts: 55

Unknown hardware modification

Post#1 » Wed Jun 03, 2020 4:31 pm

Hi Guys,

I bought a used DC because I needed a replacement motherboard. Now I have discovered a modification. What could that be?

20200603_215704.jpg

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pcwzrd13
Seen Any Sailors?
Posts: 6114
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Re: Unknown hardware modification

Post#2 » Wed Jun 03, 2020 4:32 pm

PSO Characters:
Teal'c - lvl 119 HUcast - GC# 11666
Alto - lvl 39 FOnewm - GC# 12964

YouTube Channel : Dreamcast Live

Retrojaner
dark night
Posts: 55

Re: Unknown hardware modification

Post#3 » Wed Jun 03, 2020 4:41 pm

OK, thanks. The modification according to the link is not the same. But it tends to be similar.

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megavolt85
Toy Commander
Posts: 555

Re: Unknown hardware modification

Post#4 » Wed Jun 03, 2020 4:42 pm

BIOS on this mother board don't support MIL-CD
replace BIOS and remove mod chip

Retrojaner
dark night
Posts: 55

Re: Unknown hardware modification

Post#5 » Wed Jun 03, 2020 4:54 pm

I don't want to remove that. I can't get the original back because leg 28 is no longer connected to the board and my knowledge of soldering is not very high. I better buy another motherboard and sell it again ...

And I count 5 wires. Wire 1 is soldered somewhere else, the rest fits:

http://www.goldenshop.com.hk/AI-trad/Dreamcast_htm/d_5wiremod.htm

This Mod-chip injects the correct country code during the boot sequence, so you are able to play IMPORT GAMES include Japan, USA and Europe titles. This Mod-chip are equipped with the latest codes.

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megavolt85
Toy Commander
Posts: 555

Re: Unknown hardware modification

Post#6 » Wed Jun 03, 2020 5:15 pm

hm, MPR-23588-X2 don't support MIL-CD and requery mod chip
i'm don't know why need mod chip with MPR-21931-x2

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Ian Micheal
Developer
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Re: Unknown hardware modification

Post#7 » Wed Jun 03, 2020 5:45 pm

Might be one of the wierd ones I have seen from Brazil were they have mix match of parts

Retrojaner
dark night
Posts: 55

Re: Unknown hardware modification

Post#8 » Mon Jun 15, 2020 12:55 pm

The modchip makes sense because the console plays EU, US and JP games ... I tested it.

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