Hey guys, love the forum. Glad to see sites like this still exist!!
I just bought a GDEMU 5.15b clone (bitfunx edition). I have a few questions for you all if you can be of assistance.
1) Bitfunx calls their GDEMU 5.15b the "Ultima Version." Is this just a marketing gimmick or does it actually mean something?
2) I've heard the only difference with 5.15b vs 5.20+ is that 5.15b has issues with with Skies of Arcadia and Resident Evil Code Veronica, but you can find patches for these! Where can I find them?
3) What is the best romset/full pack available for the GDEmu 5.15b? I know Archive.org has a few, but not sure which one to pick.
4) What's the best place to get the Atomiswave ports that are most compatible with GDEmu 5.15b?
5) I also read that the GDEMU 5.15b has worse compatibility with Atomiswave Ports compared to the 5.20+. Is this correct?
Thanks in advance.
Just bought a GDEMU 5.15b clone and have some questions
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- shadow
- Posts: 8
- Dreamcast Games you play Online: None
- megavolt85
- Developer
- Posts: 2158
Re: Just bought a GDEMU 5.15b clone and have some questions
1) marketing gimmick
2) there is a patch only for code veronica. you need more posts to access the download section.
3) the best option is the Dubcity collection. you need more posts to access the download section.
4) they are all compatible with GDEMU, the difference in assemblies is only in control presets.
5) no, this is a lie, only the SD card matters, some games may freeze when using a low-quality SD.
P.S. I'm the one who ported AtomisWawe and I'm using the original GDEMU with firmware 5.14 and I'm not going to upgrade to 5.20
2) there is a patch only for code veronica. you need more posts to access the download section.
3) the best option is the Dubcity collection. you need more posts to access the download section.
4) they are all compatible with GDEMU, the difference in assemblies is only in control presets.
5) no, this is a lie, only the SD card matters, some games may freeze when using a low-quality SD.
P.S. I'm the one who ported AtomisWawe and I'm using the original GDEMU with firmware 5.14 and I'm not going to upgrade to 5.20

- fafadou
- Leonard Nimoy
- Posts: 1854
Re: Just bought a GDEMU 5.15b clone and have some questions
Why don't you want to update yours ?megavolt85 wrote: I'm using the original GDEMU with firmware 5.14 and I'm not going to upgrade to 5.20
- megavolt85
- Developer
- Posts: 2158
Re: Just bought a GDEMU 5.15b clone and have some questions
I am completely satisfied with 5.14, and what errors can occur in 5.20 is not completely known.fafadou wrote:Why don't you want to update yours ?
I know that in 5.14 (the same as 5.15) there is a bug in only two games, RECV and SoA, for the first there is a fix, and in the second you can just skip the FMV.
someone said that in 5.20 there are problems with some games, of course I can’t confirm this, but it will be unpleasant if I update and it turns out to be true, I also don’t like that in 5.20 you need to turn off GDI checking
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- shadow
- Posts: 8
- Dreamcast Games you play Online: None
Re: Just bought a GDEMU 5.15b clone and have some questions
This is super helpful. Thank you! how many posts do we need to access the downloads section? Edit: Nvmd, seems like it's 2 posts as I see it now!megavolt85 wrote:1) marketing gimmick
2) there is a patch only for code veronica. you need more posts to access the download section.
3) the best option is the Dubcity collection. you need more posts to access the download section.
4) they are all compatible with GDEMU, the difference in assemblies is only in control presets.
5) no, this is a lie, only the SD card matters, some games may freeze when using a low-quality SD.
P.S. I'm the one who ported AtomisWawe and I'm using the original GDEMU with firmware 5.14 and I'm not going to upgrade to 5.20
Also, what is your take on changing the power supply when installing the GDEmu? It seemed rather inconclusive as there appears to be proponents of keeping the stock PSU regardless of installing GDEmu or not.
- megavolt85
- Developer
- Posts: 2158
Re: Just bought a GDEMU 5.15b clone and have some questions
According to statistics, NTSC-U console power supplies do not overheat, and PAL console power supplies overheat in 99% of cases when installing GDEMU.tonysantana wrote:Also, what is your take on changing the power supply when installing the GDEmu?
my personal opinion, the power supply should always be changed, this is an extra source of heat that shortens the life of the console, let this heat be released outside the console case.
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- shadow
- Posts: 8
- Dreamcast Games you play Online: None
Re: Just bought a GDEMU 5.15b clone and have some questions
I have an NTSC-U console, so it sounds like it really doesn't matter then. What do you mean though to let the heat be released outside the console case? How would a different PSU make that happen versus the stock PSU?megavolt85 wrote:According to statistics, NTSC-U console power supplies do not overheat, and PAL console power supplies overheat in 99% of cases when installing GDEMU.tonysantana wrote:Also, what is your take on changing the power supply when installing the GDEmu?
my personal opinion, the power supply should always be changed, this is an extra source of heat that shortens the life of the console, let this heat be released outside the console case.
Last edited by tonysantana on Thu Jan 19, 2023 7:56 pm, edited 1 time in total.
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- lithium
- Posts: 36
Re: Just bought a GDEMU 5.15b clone and have some questions
He means, use an external power supplies. The DC uses an internal power supplies.
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- lithium
- Posts: 36
Re: Just bought a GDEMU 5.15b clone and have some questions
After market ones use a "brick". Also, if you do get a new ps, dont get one of the ali express cheapos. I cant direct you on where to buy one since I dont use one though.
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- shadow
- Posts: 8
- Dreamcast Games you play Online: None
Re: Just bought a GDEMU 5.15b clone and have some questions
Ah, okay. I didn't know that. Thanks for the clarification. Are you also using a GDEmu with a stock psu? If so, how is it working for you?rudiment wrote:After market ones use a "brick". Also, if you do get a new ps, dont get one of the ali express cheapos. I cant direct you on where to buy one since I dont use one though.
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