Search found 87 matches

by jotego
Tue Dec 26, 2017 4:41 pm
Forum: MiST
Topic: Ghosts'n Goblins on MiST
Replies: 18
Views: 2466

Re: Ghosts'n Goblins on MiST

I am not sure what happened to the twitter account. It has been working for me all this time... Anyway, as my regular job is keeping me fairly busy and I have not been able to work on this for the last 2~3 months; I have decided to release what I have now. I hope to complete it next year (2018). Jus...
by jotego
Sat Dec 09, 2017 9:35 am
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 348
Views: 50871

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

It's there: http://atari-forum.com/viewtopic.php?f=26&t=31479&start=250#p329758 Thank you very much. I see it is only the original demo. It is nonetheless absolutly impressive! I would have gone crazy for this when I was a teenager! As an adult this kind of work actually motivates me to kee...
by jotego
Sun Dec 03, 2017 10:39 am
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 348
Views: 50871

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

Could you please share the download link? I cannot find it.
by jotego
Tue Aug 22, 2017 9:24 pm
Forum: MiST
Topic: Ghosts'n Goblins on MiST
Replies: 18
Views: 2466

Ghosts'n Goblins on MiST

Hi guys, I have not posted here in a while. Just to let you know that I'm still alive and doing things for MiST. After reaching to a hard stop on the Genesis port because we could not figured out how to fix certain things; I decided to learn more about the MiST platform and how the graphic system of...
by jotego
Mon Apr 10, 2017 10:54 am
Forum: MiST
Topic: Where to get Atari ST core and newbie questions
Replies: 7
Views: 1979

Re: Where to get Atari ST core and newbie questions

Welcome to MiST! The Atari ST core is actually called MiST. You can find it in github indeed . The file is the .rbf one ,10 months old as of today. The TOS image was a problem with real ST computers too. Some software depends on specific TOS versions so if something fails, try a different TOS versio...
by jotego
Fri Apr 07, 2017 8:49 am
Forum: MiST
Topic: Game image management
Replies: 5
Views: 1507

Re: Game image management

This is really useful! Great :-D
by jotego
Thu Apr 06, 2017 11:23 am
Forum: MiST
Topic: NES core on MiST
Replies: 162
Views: 36152

Re: M

The header actually contains detailed information about the ROM, like the mapper ID and its capabilities (backuped RAM, ROM, additional VRAM, etc). The problem is that a lot of ROMs out there are pirated versions that were running on custom cartridges/mappers. Sometime it's a huge effort to impleme...
by jotego
Wed Apr 05, 2017 11:55 am
Forum: MiST
Topic: NES core on MiST
Replies: 162
Views: 36152

Re: NES core on MiST

Here is a list of all available mappers: https://wiki.nesdev.com/w/index.php/List_of_mappers https://wiki.nesdev.com/w/index.php/Mapper Let me see if I understand this issue: -There were different ways of connecting chips inside each game cartridge. -The cartridges received all signals from the NES...
by jotego
Tue Apr 04, 2017 1:46 pm
Forum: MiST
Topic: Perfecting existing cores
Replies: 12
Views: 3041

Re: Perfecting existing cores

How about 10-20 games+demos+homebrew titles are initially selected to be tested. This can be known demanding games, ones that emulation have difficulty in running. It will be easier to split up the work and we will progress through Cores quicker and feel like progress is being made. Yes, deep testi...
by jotego
Tue Apr 04, 2017 1:44 pm
Forum: MiST
Topic: NES core on MiST
Replies: 162
Views: 36152

Re: NES core on MiST

About the mappers... is it possible to just run a program on the PC to get the mappers of all available NES cartridges?
by jotego
Tue Apr 04, 2017 12:23 pm
Forum: MiST
Topic: New Stick for MiST
Replies: 2
Views: 1100

Re: New Stick for MiST

Cool stuff!
by jotego
Tue Apr 04, 2017 12:23 pm
Forum: MiST
Topic: MIST 1.3 plus
Replies: 41
Views: 8107

Re: MIST 1.3 plus

I have a v1.3 with MIDI add-on board, and I also use the MIDI ports as an extra serial port with a core I'm working on. I've built an adapter cable which connects to the DIN connectors and is brought out to header pins on a lead for plugging in an FTDI basic board (such as you would need for connec...
by jotego
Tue Apr 04, 2017 12:21 pm
Forum: MiST
Topic: (Poll) Most wanted new MIST cores: FINAL ROUND
Replies: 38
Views: 8833

Re: (Poll) Most wanted new MIST cores: FINAL ROUND

My vote is ensuring all cores work on all MiST versions before new ones are created !! ;) I wish Amstrad CPC Plus feature series implemented in the CPC Core and an OCM (MSX) core that works without disk errors on new Mist hardware. I have to agree with you guys. We need to improve the implementatio...
by jotego
Mon Mar 27, 2017 1:41 pm
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

Device EP3C25E144C7 i think it's better to change to C8 part in project settings to help Quartus measure timings more correct. MiST uses C8 grade of FPGA. Well spotted! Yes, it is essential. Otherwise you might get a compile build and a timing analysis that targets a faster speed grade and might fa...
by jotego
Sun Mar 26, 2017 10:36 am
Forum: MiST
Topic: Perfecting existing cores
Replies: 12
Views: 3041

Re: Perfecting existing cores

I think that the documentation work you have done on the NES core is very relevant. I am not ready to help with it just yet. I have to learn more about how to make cores in general. Until now I have only focused on a specific module (sound modules) and I have tried to stay away from the general core...
by jotego
Sat Mar 25, 2017 3:58 pm
Forum: MiST
Topic: Jupiter Ace arrives at MiST
Replies: 34
Views: 6242

Re: Jupiter Ace arrives at MiST

Newsdee wrote:Did you see my reply in the new thread, btw?


Yes, sorry I have not replied yet.
by jotego
Wed Mar 22, 2017 2:33 pm
Forum: MiST
Topic: Jupiter Ace arrives at MiST
Replies: 34
Views: 6242

Re: Jupiter Ace arrives at MiST

What I wanna say is that yes it would be nice to get improved and better cores to the mist but you shouldn't discourage beginners. Sometimes a 60% solution is better than a 120% one which never got released. Absolutely, everything is open source so people will always be able to come in and experime...
by jotego
Wed Mar 22, 2017 9:24 am
Forum: MiST
Topic: Jupiter Ace arrives at MiST
Replies: 34
Views: 6242

Re: Jupiter Ace arrives at MiST

Certainly, taking into account coders' motivation is important but I think the motivation is not only fun, there is also a social aspect. When we, coders, see people enjoying our work and giving us appreciation back, it feels great. So recognition is a factor too. Another one is collaboration in the...
by jotego
Tue Mar 21, 2017 9:29 pm
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

This is a summary of a build on the Next branch ... I understand this is a completely different core than the one we were talking about earlier, right? No, it is the same FPGAgen core. It's just that there is the master branch and the Next branch in the repository. The Next is where I put new stuff...
by jotego
Tue Mar 21, 2017 5:19 pm
Forum: MiST
Topic: Bomb Jack Arcade : Has someone tried to port this to the MiST ?
Replies: 5
Views: 1564

Re: Bomb Jack Arcade : Has someone tried to port this to the MiST ?

But it doesn't mean Bomb Jack cannot be done on MiST, right? It's just that particular implementation which has issues on MiST
by jotego
Tue Mar 21, 2017 3:12 pm
Forum: MiST
Topic: Jupiter Ace arrives at MiST
Replies: 34
Views: 6242

Re: Jupiter Ace arrives at MiST

Publishing the code means: 1) You respect the one from who you got the code. Remember, the original author spent a lot of time to develop it. 2) Some one can pick the code and improve it instead to do porting from beginning. And depending on the license, there is a legal aspect too. All my sound co...
by jotego
Tue Mar 21, 2017 1:45 pm
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

This is a summary of a build on the Next branch with all the sound elements commented out, to ease synthesis. Nonetheless it still contains many violations. If I include the sound subsystem things just get worse. Flow Status Successful - Tue Mar 21 14:33:11 2017 Quartus II 64-Bit Version 12.1 Build ...
by jotego
Tue Mar 21, 2017 11:14 am
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

Yes, the issue comes from having multiple clocks. The original author of FPGAgen used a sort of clock enable strategy. That actually works fine for small designs. The problem is that we are almost completely using the FPGA resources and then things that are normally not a problem become a problem. T...
by jotego
Mon Mar 20, 2017 2:15 pm
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

I think it has something to do with VDP DMA VRAM FILL? Thunder Force IV makes extensive use of this. Software emulators had to improve their VRAM FILL accuracy for this game. Perhaps if it is not emulated/recreated correctly the audio core gets no DMA access for a while and then lots of data very q...
by jotego
Sun Mar 19, 2017 7:09 am
Forum: MiST
Topic: Genesis / Megadrive core ported to MiST
Replies: 147
Views: 27313

Re: Genesis / Megadrive core ported to MiST

I have worked a lot the last two weeks in order to improve sound quality. I have added FIR filters and a better sigma-delta in order to have a proper signal processing chain at least on the digital side. I have not seen FIR filters for interpolation before the sigma-delta DAC in any other retro FPGA...

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