Neko Project II kai (PC-9801) core (different nekop2, meowPC98)

Libretro Cores
#157

I setup RetroArch to clean macOS 13.
Then BIOS files are located to ‘np2kai’ directory in system directory.
Then I run RetroArch, download np2kai core, select core, select content (.nhd file).

Did you try without ‘bios.rom’ ?

#158

Interesting…

If I delete the whole np2kai folder then core boots OK and I can play a game!? (but with no fonts)

Next, if I put an empty np2kai folder then it will not boot and crashes?
Similarly, if I put my full np2kai folder, it also crashes.

Why?

#159

I tried on Guest account (I activated a preset account). And worked correctly.
I put files to User/Shared/RetroArch. (system/np2kai too)
Naturally, Access rights of the files/dirs were changed to everyone/rw.

#160

It is strange…

I have an Intel HD 4000 GPU. Maybe related?

And my system uses APFS filesystem (default version = not case sensitive).

I have a working setup, with two bios directories:

  • np2 (with np2.cfg, for rev.14)
  • np2kai (with np2kai.cfg, for rev.16)

The only thing changed is the core. rev.16 crashes, rev.14 works.

I am back to using rev.14 …for now.

#162

OK, I deleted retroarch.cfg and the core loaded.

So I went through my old retroarch.cfg and found the line causing the problem:

rewind_enable = "true"

Please confirm.

Of course np2kai does not support rewind. But what changed between r14 and r16 that causes this config setting to crash everything?

#163

Now I am getting another, different crash! Even deleting retroarch.cfg does not help.

Using:

  • stable 1.7.3 or nightly
  • latest build of n2paki core (downloaded inside fresh RetroArch)

here are the verbose logs:

Seems to fail just before: [INFO] Environ SET_DISK_CONTROL_INTERFACE.

#164

Hello

I upgrade on my recalbox with retroarch 1.7.3 and uploaded last core on buildbot.libretro.com when i tried to use FDD2 to charge disk 2 , not possible folder it’s not the good…

1522675341-np2kai02.png - envoi d'image avec NoelShack

#165

Hello.

Is it possible to remap the Joy2Key configuration at all, even if through manually creating a configuration file? I want to get a Joypad button mapped to Left Shift for playing Touhou games that use it.

Using Neko Project II kai ver .0.86 kai rev. 16 on Android.

#166

@AZO234 Just saw your twitter message about your health problems and that you’re stopping Np2Kai development for now.

I’d like to thank you for all you’ve done on that program, bringing the FM sound and all the other improvements we wouldn’t have without your work.

いろいろありがとうございました。体に気をつけて。

3 Likes
#167

I apologize for being busy for a while and taking time to respond.

As @Tetsuya79 said, I got a bit of a loss of health.

In about one month from now, try to solve some existing problems, I’ll release rev.17.
After that, I’ll take a rest for about a year to improve my life.

It is not seriously ill! Because it only spends without thinking about development.
(Just follow my doctor’s extra advice.:stuck_out_tongue:)

Let’s examine the matter of @matt on Linux.

According to @Acris, it seems necessary to investigate recalbox.

I think that @Aethix needs a complicated implementation,
such as which keyboard key should be selected,
implemented by changing the cfg file instead of the UI. extremely difficult.
It can not be realized with rev.17. I’m sorry.

I would like to express our appreciation to those who gave valuable opinions to NP2kai !!
Very very thanks to NP2kai users.
I’LL BE BACK !!:+1:

Regard.

2 Likes
#168

Thanks a lot for all your work Take care

1 Like
#169

I see. Thank you for taking the time to respond and for all your hard work on this awesome emulator. Please take care of yourself.

1 Like
#170

I was thinking about getting a single board computer for PC98 emulation. Can anyone give me some information on the speed and compatibility of this core right now? And maybe a recommendation of what fruit to go for (raspberry, orange, banana)

I’m hoping it will be good enough to run most older games so I can make a standalone unit dedicated to pc98.

Your help would be very much appreciated.

#171

It’s rather expensive cpu wise, a bit similar to DosBox requirement.
A Pi will probably struggle to emulate a cpu above 10~16MHz I think? (I don’t have one, judging from the results I got on my android phone)
So games like Touhou that were made for a DX2 66Mhz will have a hard time running at fullspeed on such devices.

1 Like
#172

I am sorry that it took time to reply.

Between rev. 14 and 16, WAB was implemented.
It seems that there was a problem with this difference.

When rewind is enabled,
I modified the part that saved NULL buffer to state save.
It never aborts.

However, I cannot confirm the problem when deleting retroarch.cfg.
(These are the same trouble, and it is lucky if it fixed)

Regard.

1 Like
#173

I am sorry that it took time to reply.

If FDD2 is empty at startup,
system/np2kai should be displayed when inserting a disk.
It is correct behavior.

However, if a disk is in FDD2 at startup,
that directory of disk image file should be displayed.

#174

Don’t worry about rewind error so much, because there is a workaround (make sure rewind is turned off! :laughing: ).

More important is issue regarding crash I cannot understand or workaround (June 9th).

Wishing you good health! We will be here when you return. #PC98forever

1 Like
#175

You enabled NP2kai’s 3DS build.
Thank you very much.

I fixed compile error on 3DS building.

1 Like
#176

Thank you for the quick reply. I wanted something cheap (preferably below 60 usd) and small. What minimum requirements would you recommend for a pc? And do you have any other ideas for alternatives?

#177

I added the ‘Manual’ mode of Joy2Key.
You can assign RETROK key code to each button.
(D-UP/DOWN/LEFT/RIGHT/A/B/X/Y/L/R/Select/Start)

Please edit to the ‘lrjoybtn’ value of system/np2kai/np2kai.cfg file.

Thanks to your nice idea !!

1 Like