MAMEWorld Forums - MAMEUI & IV/Play - Re: Bug in kof96, kof97 and kof98

> Hi Robbbert,
> I believe you already know it. In the games listed in the subject and only with
> MAMEUI, when the game timer is at zero instead of ending the challenge the time
> starts from zero.
> Are there any chances that this error will be fixed?
>
> Thank you.

Since this was an issue that was apparently fixed, and based on what you're reporting is occurring again in 202, Robbert *really* needs to explain what the source of the issue is. Transparency is key here.

From the outside it looks like a 68k issue, a very fundamental one of not being able to count / flags being wrong. If that's the case it's going to affect a far broader range of games than these NeoGeo titles in subtle, unwanted ways that completely break the gameplay. It puts MAMEUI builds affected by the issue on a 'do not use' list because the 68k is a widely used processor.

This shouldn't be happening, there should be no reason for this bug, so we need a clear explanation of why it is happening and what was done to fix it before.

If it's a code change specific to MAMEUI it needs pointing out in the MAMEUI source, and reverting (there really shouldn't be changes that affect how drivers work anyway)

If it's a bug that's created by certain compiler versions then those compiler versions should not be trusted as if they're getting something basic like this wrong they're probably doing a lot wrong elsewhere too. Alternatively, if MAMEUI is using the same compiler but different compiler optimizations than baseline, including potentially dangerous ones (options turned too high) that needs to be fixed because again such things can cause widespread issues.

I'm not being a dick here, this kind of bug is genuinely concerning and to have confidence in the product people need to know why it happens and what is being done to address that, it's something that's come out of nowhere after almost 20 years of these games never having such an issue, with them all using emulation code that is mature and well tested.

So, Robbert, why is this happening in MAMEUI?