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

Libretro Cores
#1

I implemented Neko Project II (PC-9801) core, different nekop2(meowPC98).

  • libretro port and SDL2 port
  • More CPU clock
  • More memory size
  • More FDD/HDD image types
  • CD Drive available
  • VGA/256 color available and more…

Please add libretro cores family.

Thanks.

6 Likes
#2

Wow, that’s awesome! Thanks for sharing this. We’ll get it added to the online updater very soon.

#3

Nice! :slight_smile:

Can’t test it as I’m on windows. I see it’s using system/np2 too, the cfg file is going to be the same between the 2 np2 cores.

#4

Hi.

I’ll try to be able to build cores on Windows.

There are difference to between libretro core and SDL2 core cfg files. Then I think cfg files locate different as possible. But 2 cfg files are almost same, probably these can use commonly.

Thanks for your request.

#5

Hi.

I fixed to be able to build MinGW.

Thanks.

1 Like
#6

Thank you, but it still gives me some errors.

Compile log.

#7

Nice implementation ( although most of Libretro code is taken from @guicrith or mine implementation)

#8

I used follow MinGW environment. (Probabry this is old)

I try again with

https://bot.libretro.com/docs/compilation/windows/

Thanks report.

#9

Hello, r-type.

My implementation is referenced your code. and I add a bit betterment.

Thanks for your great code.

#10

I’m using this one.

The other one you mentioned is indeed really old.

#11

I fixed source on GitHub and maked with MSYS2 x86_64.

Please try it. (:D)

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#12

Thanks it’s working now. :slight_smile:

I see that Touhou 1 works, that’s nice.

I did some tests: it runs as fast as the meow port and has additional features that’s good. Just lost some keys for our western keyboard (as : or @) that I could bring back easily.

#13

I cant make works the outstanding PC98 version of Policenauts. I have the hdi file and the user boot disk (hdm file) Its not crashing, but nothing happen, a strange black screen Can someone make it works through retroarch ?

Thanks

#14

Is there any reason why you are using PC9801-26K as the default sound board?
Isn’t PC9801-86 the usual default one in Neko Project II?

#15

To hostile1975, Tetsuya79

Hi. Tetsuya79 saies so, default 86 newer sound in usual NP2.
But legacy games use 26K sound.
Then it sets 86 sound, there are no sound legacy games.

26K = SSG, FM(OPN)
86 = SSG, FM(OPNA), PCM(not WSS)
118 = SSG, FM(OPN3-L or OPL3), PCM(WSS), MIDI(MPU-401)

It is convenient to know this feature.

Regards.

1 Like
#16

Sadly every Neko Project II version has some sound issues except this one (which is closed source and for windows only).
I give you the links to its revision history if that can give you ideas for np2kai (if you don’t already now about it!):
-old thread
-new thread (just got a virus warning on the last version :s )

Fixes include saturation problems (like Touhou 2 “End of daylight” song after a while, other tracks too), cleaner digitalized voices in a lot of games.

#17

I know ‘fmgen’ have a lot of fixation.
But 'fmgen’s source code is not opened.
And NP2 itself can not drive completely.
Let 's do our best if possible.

#18

I added ‘fmgen’ FM sound module to NP2kai core.
Option -> Sound Generator -> fmgen
and restart.

This is probably same ‘NP2/fmgen’ binary used.
(‘NP2/fmgen’ seems to be a lot of fixes done.)

Please try to use fmgen.

#19

Nice, great addition!

Although I’ve got a lot of noise here, I don’t know if that’s the same for you?

#20

Oops. It’s noizy my Linux environment.
But Windows (Windows 10) environment, sounds clean.

I’m sorry for making you feel uncomfortable.
I tune this.

1 Like