Search found 85 matches

by Manveru
Wed Aug 09, 2023 12:23 pm
Forum: Mega/SegaCD
Topic: SEGA CD Mode 1
Replies: 57
Views: 393774

Re: SEGA CD Mode 1

Eke wrote: Tue Aug 08, 2023 8:52 pm Unfortunately, Bizhawk is using a quite old version of Genesis Plus GX so it's probably missing a lot of bugfixes and added features, including automatic Mode 1 support.
In Retroarch it works perfectly, thanks
by Manveru
Tue Aug 08, 2023 1:50 pm
Forum: Mega/SegaCD
Topic: SEGA CD Mode 1
Replies: 57
Views: 393774

Re: SEGA CD Mode 1



I think Genesis Plus GX also supports Mode 1 boot these days, but I've personally had trouble figuring out how to get it running.
Hi,

You only need to have a .cue file with same basename as the ROM file you load, in same directory, and Sega CD Mode 1 should automatically be enabled ...
by Manveru
Sat Aug 05, 2023 6:48 am
Forum: Mega/SegaCD
Topic: SEGA CD Mode 1
Replies: 57
Views: 393774

Re: SEGA CD Mode 1


FWIW, BlastEm nightly builds also have Mode 1 support these days and might run on a slightly less beefy machine. My CD compatibility is currently a fair bit worse at the moment, though I do much better on mcd-verficator. I think Genesis Plus GX also supports Mode 1 boot these days, but I've ...
by Manveru
Fri Aug 04, 2023 6:08 pm
Forum: Mega/SegaCD
Topic: SEGA CD Mode 1
Replies: 57
Views: 393774

Re: SEGA CD Mode 1


You might try ARES. It has better mode 1 support (it's the emulator Vic uses for testing mode 1 support in D32XR). The main problem with ares is that it takes a pretty beefy computer.

If it acts the same, then the problem is likely in the code rather than the emulator.

Vic posted his Genesis+CD ...
by Manveru
Sat Jul 29, 2023 4:41 pm
Forum: Mega/SegaCD
Topic: SEGA CD Mode 1
Replies: 57
Views: 393774

Re: SEGA CD Mode 1

Hello mates, i am working with mode 1 and i am having some issues, so sorry for writting in this old thread but i cant make it work.

I tried from the last version code in this thread, it works well just adding a check command after reading disk. My problem comes when i try to read pads. When i both ...
by Manveru
Sat Jun 06, 2020 2:43 pm
Forum: Sound
Topic: Sega CD Mode 1 support functions for SGDK
Replies: 25
Views: 107637

Re: Sega CD Mode 1 support functions for SGDK


I suppose that after a certain amount of time, or if the user selects something from the menu to disable the cd, you could reset the asic and the sub cpu. That should do it.

/*
* Reset the Gate Array - this specific sequence of writes is recognized by
* the gate array as a reset sequence ...
by Manveru
Thu Jun 04, 2020 11:08 pm
Forum: Sound
Topic: Sega CD Mode 1 support functions for SGDK
Replies: 25
Views: 107637

Re: Sega CD Mode 1 support functions for SGDK


Emulators generally don't handle things like Mode 1 since it wasn't used by anything commercial, so it was of no interest to emulator authors. It's like CD32X emulation - not something emulations handle. This is more a real hardware thing.
Yeah, but finally Kega can be used for testing if you do ...
by Manveru
Thu Jun 04, 2020 4:16 pm
Forum: Sound
Topic: Sega CD Mode 1 support functions for SGDK
Replies: 25
Views: 107637

Re: Sega CD Mode 1 support functions for SGDK

Now i see this thread up, i wonder if there is any tutorial or else to make "Mode 1" (sorry Sik) work in emulators. I tried with Kega but it has some glitches that does not draw the graphics after loading the CD. It is suppose to work with Genesis plus gx, but i can not find any guide for that, so ...
by Manveru
Fri Dec 06, 2019 9:17 am
Forum: Video Display Processor
Topic: Horizontal Cell Scroll + Vertical Plane Scroll
Replies: 4
Views: 24798

Re: Horizontal Cell Scroll + Vertical Plane Scroll


Could it be that vdp hardware applies first vertical scroll and only then horizontal? If that’s the case, since there is no way to exchange priorities, I don’t think there is a solution, one of both scrollings has to be first.
it is possible and i also can not find a solution so we decided to set ...
by Manveru
Tue Dec 03, 2019 9:55 am
Forum: Video Display Processor
Topic: Horizontal Cell Scroll + Vertical Plane Scroll
Replies: 4
Views: 24798

Re: Horizontal Cell Scroll + Vertical Plane Scroll


Your post is extremely confusing, not sure I understood it at all, but let’s give it a try.

You can only scroll 28 tiles because that’s the max resolution on NTSC (28 * 8 = 224).
The questin was if it is possible to make properly a horizontal cell scroll when the vertical scroll is moving ...
by Manveru
Mon Dec 02, 2019 9:43 am
Forum: Video Display Processor
Topic: Horizontal Cell Scroll + Vertical Plane Scroll
Replies: 4
Views: 24798

Horizontal Cell Scroll + Vertical Plane Scroll

I come from this topic but i do not know very well how it works and if the same applies to horizontal scroll:
http://gendev.spritesmind.net/forum/viewtopic.php?f=22&t=737

In short: i have a cell (tile) scroll for a 36 tile height background. When vertical scroll is 0, then the background ...
by Manveru
Thu Jul 11, 2019 4:58 pm
Forum: Video Display Processor
Topic: DMA Fill with autoinc 128
Replies: 3
Views: 15365

Re: DMA Fill with autoinc 128


See official documentation for an explanation; see SGDK code implementation for a solution.

Fill basically works only with bytes when transferring, so both bytes of the map have to be the same; this will only work if you intend to use the very first tile as a substitute with all flags to 0 ...
by Manveru
Thu Jul 11, 2019 1:43 pm
Forum: Video Display Processor
Topic: DMA Fill with autoinc 128
Replies: 3
Views: 15365

DMA Fill with autoinc 128

Hello mates. I think what i wanted to do is not possible due to how DMA Fill works, but i want to ask you before definitely discard that idea.

I want to clear an image in a plane, column by column. Then my first thought was to do a DMA Fill of 0s from the corresponding plane nametable pattern ...
by Manveru
Fri Jan 18, 2019 12:11 pm
Forum: Video Display Processor
Topic: Help scale and rotation sega genesis
Replies: 33
Views: 73389

Re: Help scale and rotation sega genesis

Some time ago we made some tests with scaling and rotation, and as Sik said, it is very very expensive.
Anyway, i you want or need to make some basic stuff in intros or something like that, we used this guide with as much optimizartions as we could: http://www.drdobbs.com/architecture-and-design ...
by Manveru
Sun Dec 23, 2018 11:05 am
Forum: Tools
Topic: Fork of DMF2ESF (Deflemask to Echo converter)
Replies: 10
Views: 32961

Re: Fork of DMF2ESF (Deflemask to Echo converter)



I hope someone can help us. We need some stuff to convert from a tracker to Echo, and Deflemask + your converter seems to be the best chance.

Hi. I made an app to convert DMF to Echo's format. It's call "DefleMask Convert" and it's in the Tools section. You should try it.
Thanks for your work ...