X68000 beta - Updates and releases

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patamar4
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Re: X68000 beta - stopped working all of a sudden

Unread post by patamar4 »

breiztiger wrote: Sun Sep 06, 2020 7:05 am hi
just test with gradius II
i have a persistent sound when watching demo mode that is not present in X68000_20200902
Hi, best way is Mr Puu implement in his design, I just put it the way it would work, but for him to see that it is better than the implementation he made of the sound chip, now is to wait if he will put the jotego on the x68k correctly
friendly.joe
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Re: X68000 beta - stopped working all of a sudden

Unread post by friendly.joe »

Hi, thank you for this experiment!
It looks like if internal core timings (write timing to the JT51 core) are in sync or well regulated, sound is produced VERY nicely.
Many games are still having this signal timing issues and experience incomplete sound output; however I tried with MMDSP and a dedicated MDX sound driver to play various X68000 tunes. Result is top notch and bug free, very clean and wonderful music playback is possible. :D
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tontonkaloun
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Re: X68000 beta - stopped working all of a sudden

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...
puu
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Re: X68000 beta - stopped working all of a sudden

Unread post by puu »

The DMA fix released on 8/27 revealed that there was something wrong with the writing on the SASI HDD.
I have uploaded a modified version, so please update it.
http://fpga8801.seesaa.net/archives/20200913-1.html
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tontonkaloun
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Re: X68000 beta - stopped working all of a sudden

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Thank you Mr. Puu for the last version.
I will test it immediately !!!!!
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tontonkaloun
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Re: X68000 beta - stopped working all of a sudden

Unread post by tontonkaloun »

Thank you !!!
It is now possible to save in the game Akumajou Dracula !!! :D :D
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tontonkaloun
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Re: X68000 beta - stopped working all of a sudden

Unread post by tontonkaloun »

Hello Mr. Puu
What would be missing now is to be able to save the configuration of the x68000 core ... for example, the joystick must be configured each time the core is restarted
dentnz
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Re: X68000 beta - stopped working all of a sudden

Unread post by dentnz »

I'd love to change the subject of this thread to just be X68000 beta... Any idea how I can make that happen?
dentnz
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Re: X68000 beta - Updates and releases

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Ah, done!
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tontonkaloun
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Re: X68000 beta - Updates and releases

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The brand new core with the jt51 sound chip
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Alkadian
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Re: X68000 beta - stopped working all of a sudden

Unread post by Alkadian »

puu wrote: Sun Sep 13, 2020 1:23 pm The DMA fix released on 8/27 revealed that there was something wrong with the writing on the SASI HDD.
I have uploaded a modified version, so please update it.
http://fpga8801.seesaa.net/archives/20200913-1.html
Thanks puu! Looking forward to testing it!
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Alkadian
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Re: X68000 beta - stopped working all of a sudden

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tontonkaloun wrote: Sun Sep 13, 2020 3:31 pm Thank you Mr. Puu for the last version.
I will test it immediately !!!!!
Thanks a lot for sharing, as usual!
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Alkadian
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Re: X68000 beta - Updates and releases

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tontonkaloun wrote: Mon Sep 14, 2020 3:04 pm The brand new core with the jt51 sound chip
Great, thanks for sharing this as well!
Txamin
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Re: X68000 beta - Updates and releases

Unread post by Txamin »

I've been testing this, some games appear squashed up or to the right, probably due to different resolutions. Very impressed with the core (and the original computer)
zoopster
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Re: X68000 beta - Updates and releases

Unread post by zoopster »

Amazing to hear the improvement with the JT51 sound chip.
roel27
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Re: X68000 beta - Updates and releases

Unread post by roel27 »

For some reason I need to set the "VGA to scaler" output to 1 on this core (vga_scaler=1). The games run, but the view area is very small.
On other cores this setting is 0 on my Sony BVM MiSTer IO setup (VGA to Scart > SCART breakout to BNC).

I thought that the X68000 core could also display in 15khz (at least for some games that support this) ?
zakk4223
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Re: X68000 beta - Updates and releases

Unread post by zakk4223 »

roel27 wrote: Sun Sep 20, 2020 9:31 pm For some reason I need to set the "VGA to scaler" output to 1 on this core (vga_scaler=1). The games run, but the view area is very small.
On other cores this setting is 0 on my Sony BVM MiSTer IO setup (VGA to Scart > SCART breakout to BNC).

I thought that the X68000 core could also display in 15khz (at least for some games that support this) ?
The core doesn't support this at the moment. See a previous post from puu in this thread. It always outputs 800x600@60hz I think.
This is apparently due to the original platform he developed it on not having a scaler, so the core does some internal conversion itself.

Unfortunately this means most of the video timings aren't accurate, which may or may not be a big deal depending on the game in question and how far off of 60hz is was originally intended to run.
roel27
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Re: X68000 beta - Updates and releases

Unread post by roel27 »

zakk4223 wrote: Mon Sep 21, 2020 8:00 pm
roel27 wrote: Sun Sep 20, 2020 9:31 pm For some reason I need to set the "VGA to scaler" output to 1 on this core (vga_scaler=1). The games run, but the view area is very small.
On other cores this setting is 0 on my Sony BVM MiSTer IO setup (VGA to Scart > SCART breakout to BNC).

I thought that the X68000 core could also display in 15khz (at least for some games that support this) ?
The core doesn't support this at the moment. See a previous post from puu in this thread. It always outputs 800x600@60hz I think.
This is apparently due to the original platform he developed it on not having a scaler, so the core does some internal conversion itself.

Unfortunately this means most of the video timings aren't accurate, which may or may not be a big deal depending on the game in question and how far off of 60hz is was originally intended to run.
Ok, thanks for you clarification
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wark91
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Re: X68000 beta - Updates and releases

Unread post by wark91 »

I found a sound issue with the last version with the integration of JT51. It is maybe a jt51 issue or integration issue. This issue is not present in on the core without JT51.
In the game Gradius 2, if you let attract mode play. At the game over screen a weird sound appeared until the Konami logo.
Can someone confirm it ?

@puu, for information there is some updates on TG68K cpu (https://github.com/TobiFlex/TG68K.C) It maybe helps this core.
This code is used on Amiga core.

Thanks,
neopolo
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Re: X68000 beta - Updates and releases

Unread post by neopolo »

hello,how do you get the sram file?i'm lost. :oops:

thanks very much :)
neopolo
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Re: X68000 beta - Updates and releases

Unread post by neopolo »

i'm sorry :oops: ......i find it in the pezz82 topic :)

thanks
puu
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Re: X68000 beta - Updates and releases

Unread post by puu »

It doesn't matter if you don't have the SRAM file. There is no problem with normal operation with the initial value. If you want to create it, create an empty 16kB file, put it in the SD card, select it as an SRAM file, and then select STORE SRAM to update the contents. Just selecting a file does not load it. LOAD SRAM is required to load.
Txamin
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Re: X68000 beta - Updates and releases

Unread post by Txamin »

wrong post, sorry.
neopolo
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Re: X68000 beta - Updates and releases

Unread post by neopolo »

puu wrote: Thu Oct 22, 2020 12:28 am It doesn't matter if you don't have the SRAM file. There is no problem with normal operation with the initial value. If you want to create it, create an empty 16kB file, put it in the SD card, select it as an SRAM file, and then select STORE SRAM to update the contents. Just selecting a file does not load it. LOAD SRAM is required to load.
thanks very much PUU ,for the information.
AeroCity
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Re: X68000 beta - Updates and releases

Unread post by AeroCity »

I am also having sound issues with Chourensha. It seems, both non JT51 and Jt51 versions have different issues with generating all instruments consistently, as well as the noise channel.it would be soooo awesome, if someone could look into it. It's my favorite game! :)
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