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For many years, my brothers and I have been puzzled by a screen in Golvellius that appears out of place and identical to another room in the game. So, my brother (Quinntesson, author of the Genesis/SegaCD/32X emulator 'AGES') checked more deeply into it and found that there was, indeed, a bug in Golvellius where one room was inadvertently used twice. Since this bug didn't break the game, the game was shipped any way.

Today, we present you with a detailed description of the bug and a patch for Golvellius so that you can finally play this game with the proper room, as it was meant to be played.

All map locations refer to the coordinates on the following map:
http://www.smspower.org/seganotebook/golvlius/golvmap.html

The incorrect room is at C5 and is currently identical to the room layout used for room E1.

The patch also includes a fix for the cave in room H4 which has garbled graphics.

Enjoy!

golvellius_missing_room.png (24.86 KB)

missing room image (room C5)

golvellius_fixed_cave.png (25.39 KB)

fixed cave (room H4)

Golvellius - Valley of Doom (UE) [!].ips (20 B)

patch file

golvellius.txt (2.06 KB)

technical description

golvellius_file_compare.txt (137 B)

patch description

I believe it was correct in the Japanese version of the game. This ties in well with our new Hacks section, which you're welcome to add this to.

This is really cool! I'm very impressed with the detective work that went into determining the cause of the bug, and providing a fix as well.

Now I have a good excuse to play through Golvellius again. :D

Hi everybody,

could anyone apply the patch and make the patched rom available to me? I'm running linux and am not sure any of the patchers will work on linux.

thanks a lot!

IPS is an ancient format, there must be patchers around. Here's a few candidates:

https://github.com/BlockoS/ips-patcher
Lunar IPS under WINE
http://zerosoft.zophar.net/jips.php with Java
It's only three bytes, patch it by hand!
Some options here, including a Perl script: http://wiki.superfamicom.org/snes/show/How+to+Use+ROM+Patches

Maxim wrote

IPS is an ancient format, there must be patchers around. Here's a few candidates:

https://github.com/BlockoS/ips-patcher
Lunar IPS under WINE
http://zerosoft.zophar.net/jips.php with Java
It's only three bytes, patch it by hand!
Some options here, including a Perl script: http://wiki.superfamicom.org/snes/show/How+to+Use+ROM+Patches

Thank you Maxim! BlockoS/ips-patcher did it for me :D

cheers

I created section for this hack here:

http://www.smspower.org/Hacks/Golvellius-SMS-Bugfix

There's also a link to this on the main Hacks page. It didn't fit into the 'Game Gear to Master System' section so I created a new one just called 'Master System'. Admins of the site can decide if that's the format they want or if it needs to be tweaked.

Thanks

Author	Message
Eric R. Quinn Joined: 18 Sep 1999 Posts: 498 Location: Portland, Oregon USA	Golvellius bug: Lost Room has been found Posted: Sun May 11, 2014 1:10 am
	For many years, my brothers and I have been puzzled by a screen in Golvellius that appears out of place and identical to another room in the game. So, my brother (Quinntesson, author of the Genesis/SegaCD/32X emulator 'AGES') checked more deeply into it and found that there was, indeed, a bug in Golvellius where one room was inadvertently used twice. Since this bug didn't break the game, the game was shipped any way. Today, we present you with a detailed description of the bug and a patch for Golvellius so that you can finally play this game with the proper room, as it was meant to be played. All map locations refer to the coordinates on the following map: http://www.smspower.org/seganotebook/golvlius/golvmap.html The incorrect room is at C5 and is currently identical to the room layout used for room E1. The patch also includes a fix for the cave in room H4 which has garbled graphics. Enjoy! golvellius_missing_room.png (24.86 KB) missing room image (room C5) golvellius_fixed_cave.png (25.39 KB) fixed cave (room H4) Golvellius - Valley of Doom (UE) [!].ips (20 B) patch file golvellius.txt (2.06 KB) technical description golvellius_file_compare.txt (137 B) patch description

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Sun May 11, 2014 7:39 am
	I believe it was correct in the Japanese version of the game. This ties in well with our new Hacks section, which you're welcome to add this to.

Charles MacDonald Joined: 28 Sep 1999 Posts: 1197	Posted: Sun May 11, 2014 1:17 pm
Charles MacDonald Joined: 28 Sep 1999 Posts: 1197	This is really cool! I'm very impressed with the detective work that went into determining the cause of the bug, and providing a fix as well. Now I have a good excuse to play through Golvellius again. :D

guangling Joined: 21 Dec 2004 Posts: 24 Location: Hong Kong	Posted: Mon May 12, 2014 12:31 pm
	Hi everybody, could anyone apply the patch and make the patched rom available to me? I'm running linux and am not sure any of the patchers will work on linux. thanks a lot!

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14740 Location: London	Posted: Mon May 12, 2014 4:57 pm
	IPS is an ancient format, there must be patchers around. Here's a few candidates: https://github.com/BlockoS/ips-patcher Lunar IPS under WINE http://zerosoft.zophar.net/jips.php with Java It's only three bytes, patch it by hand! Some options here, including a Perl script: http://wiki.superfamicom.org/snes/show/How+to+Use+ROM+Patches

guangling Joined: 21 Dec 2004 Posts: 24 Location: Hong Kong	Posted: Tue May 13, 2014 1:25 am
	Maxim wrote IPS is an ancient format, there must be patchers around. Here's a few candidates: https://github.com/BlockoS/ips-patcher Lunar IPS under WINE http://zerosoft.zophar.net/jips.php with Java It's only three bytes, patch it by hand! Some options here, including a Perl script: http://wiki.superfamicom.org/snes/show/How+to+Use+ROM+Patches Thank you Maxim! BlockoS/ips-patcher did it for me :D cheers

Eric R. Quinn Joined: 18 Sep 1999 Posts: 498 Location: Portland, Oregon USA	Posted: Thu May 22, 2014 3:02 am
	I created section for this hack here: http://www.smspower.org/Hacks/Golvellius-SMS-Bugfix There's also a link to this on the main Hacks page. It didn't fit into the 'Game Gear to Master System' section so I created a new one just called 'Master System'. Admins of the site can decide if that's the format they want or if it needs to be tweaked. Thanks

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