Region Changer 1.5

Discuss modifications you have done or plan to do to your Dreamcast or any other hardware, or discuss devices you want to build. If your console does not work or is acting up, ask about fixing it in here.
DCEmu Cool Newbie
DCEmu Cool Newbie
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Joined: Sat May 12, 2007 8:19 am

Re: Region Changer 1.5

Post by mathieulh » Tue Mar 03, 2009 4:57 pm

Is the region changer open source ? For people who have the goal of flashing the HKT-0120 bios (or in my case a patched version of it with mil-cd + region free support) People should know that the HKT-0120 bios actually looks in the flash at 0x0001A000 and if the bit is set to 30 (which creates the first 0 of the 00XYZDreamcast ASCII string (for the region)) then it refuses to boot. I do not know why such a check is there and I have yet to figure how to nop it.

An easy fix would just be to overwrite the 0x30 to 0xFF so I am wondering if the sources are available so I can overwrite this bit on the flash with some blank value (this does not affect the retail bios behaviour at all)

I will look for the check in the bios later to see if I can nop it.

UPDATE: Nevermind that, I got the check dealt with.

Also thanks for the help Link83 provided with his bios.

I will see with him if I can provide details on some of the changes that I have done on the bios.
DCEmu Newbie
DCEmu Newbie
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Re: Region Changer 1.5

Post by cvgs » Tue Mar 30, 2010 10:17 am

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