Sega Saturn Core in Development

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neogeo81
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Re: Sega Saturn Core in Development

Unread post by neogeo81 »

Beeble wrote: Sun Apr 23, 2023 9:53 pm
neogeo81 wrote: Sun Apr 23, 2023 6:34 pm
Beeble wrote: Sun Apr 23, 2023 2:48 pm

Update: After the MiSTer Linux Update from today I am able to boot into games.

Looks like you missed to use the latest unstable mister main. It is know implemented into the main.

I didnt, which is why I answered here. Maybe the wind blew from the wrong direction last time or solar flares did interfere :)

ok but if the main update solved the issue than the issue must have been the from main. :!:

Marcellus
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Re: Sega Saturn Core in Development

Unread post by Marcellus »

No, not from main. 3 times, downloaded and updated my main mister with unstable nightly and Saturn Core with no success. Today I performed update_all, which updated a lot of things and Linux part also, and Tadammmm! Saturn working again.

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Re: Sega Saturn Core in Development

Unread post by Goemon »

Just reading about the Saturn Dual SDRAM use. Is this likely to be the case when the core is closer to final or is the aim to get it fully functional with a Single SDRAM? This is one of the cores I’m looking forward to and wondered if I should upgrade with another SDRAM module in preparation.

Appreciate this may not be currently possible to answer.

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ntt
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Re: Sega Saturn Core in Development

Unread post by ntt »

Too early to tell, I'm afraid... I'd wait to see if this core - or some other cores currently being developed - may require/offer better performance with double SDRAMs in their final stable version
In general stable cores usually work with a single SDRAM card, so far at least, yet double SDRAM sticks (any size) give better latency.. It all depends on how the core is engineered and optimized, though.
For the record my MiSTer has two SDRAM sticks, but the second one for now sees basically no use other than the Saturn core or an experimental PSX core..

Goemon wrote: Thu May 04, 2023 7:48 pm

Just reading about the Saturn Dual SDRAM use. Is this likely to be the case when the core is closer to final or is the aim to get it fully functional with a Single SDRAM? This is one of the cores I’m looking forward to and wondered if I should upgrade with another SDRAM module in preparation.

Appreciate this may not be currently possible to answer.

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Re: Sega Saturn Core in Development

Unread post by neogeo81 »

Marcellus wrote: Mon Apr 24, 2023 12:02 pm

No, not from main. 3 times, downloaded and updated my main mister with unstable nightly and Saturn Core with no success. Today I performed update_all, which updated a lot of things and Linux part also, and Tadammmm! Saturn working again.

exactly, you had the wrong unstable my friend. because if the update_all did solve the issue, the issue was in the main, because the main was update to work with saturn wip core.

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Re: Sega Saturn Core in Development

Unread post by Goemon »

ntt wrote: Thu May 04, 2023 8:40 pm

Too early to tell, I'm afraid... I'd wait to see if this core - or some other cores currently being developed - may require/offer better performance with double SDRAMs in their final stable version
In general stable cores usually work with a single SDRAM card, so far at least, yet double SDRAM sticks (any size) give better latency.. It all depends on how the core is engineered and optimized, though.
For the record my MiSTer has two SDRAM sticks, but the second one for now sees basically no use other than the Saturn core or an experimental PSX core..

Thanks for the info. When you say dual gives better latency, where exactly is the improvement seen?

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ntt
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Re: Sega Saturn Core in Development

Unread post by ntt »

You don't see it easily as an end user, I think..
Core developers might use it to improve RAM bandwidth and get better core performance (for instance create a mister core for a system with relatively high RAM speed)
Please note that I'm an end user myself, not a core developer, the above is just my understanding of this matter.

Goemon wrote: Fri May 05, 2023 7:15 am

Thanks for the info. When you say dual gives better latency, where exactly is the improvement seen?

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Re: Sega Saturn Core in Development

Unread post by Marcellus »

neogeo81 wrote: Fri May 05, 2023 7:12 am
Marcellus wrote: Mon Apr 24, 2023 12:02 pm

No, not from main. 3 times, downloaded and updated my main mister with unstable nightly and Saturn Core with no success. Today I performed update_all, which updated a lot of things and Linux part also, and Tadammmm! Saturn working again.

exactly, you had the wrong unstable my friend. because if the update_all did solve the issue, the issue was in the main, because the main was update to work with saturn wip core.

Weird, I have installed MiSTer_unstable_20230413_21c1d8, mentioned earlier in this thread, as a proper version.Downloaded from links posted here. And no success.

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Re: Sega Saturn Core in Development

Unread post by lsnderick »

We have a new build pushed a few hours ago, haven't tested yet if it works with current MiSTer main

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Re: Sega Saturn Core in Development

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Yeah. I was going to pop the new one on the Mister.

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Re: Sega Saturn Core in Development

Unread post by Krathoon »

I tried the new build out. Panzer Dragoon Saga is running now. It does freeze on the cutscenes for some reason.

It looks like Sonic Jam fully renders now. There is some kind of audio issue.

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Re: Sega Saturn Core in Development

Unread post by Fallon »

Feels like the Saturn core is edging closer and closer to a general release. Saturn Bomberman and Bubble Symphony seem almost perfect except the crackling background music.

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Re: Sega Saturn Core in Development

Unread post by Krathoon »

I have not tried Nights yet. It is getting pretty exciting. The bios screen needs to match the region.

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Re: Sega Saturn Core in Development

Unread post by pbsk8 »

On discord I found these two, which one is the most updated?

Latest Saturn_SingleSDRAM unstable build: https://github.com/MiSTer-unstable-nigh ... 16758e.rbf

[Sergey Dvodnenko 2023-04-10 758e32b] Update files

Latest Saturn_SingleSDRAM unstable build: https://github.com/MiSTer-unstable-nigh ... 16ee8d.rbf

[Sergey Dvodnenko 2023-05-10 ee8d254] Update debug

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neogeo81
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Re: Sega Saturn Core in Development

Unread post by neogeo81 »

The bottom one with 16ee8d

[Sergey Dvodnenko 2023-05-10 ee8d254] Update debug

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Re: Sega Saturn Core in Development

Unread post by MrMister1985 »

Hi guys, just tryin to get this set up as it looks so close to a release now. :)

If i want to play both US and JP games do i need 2 bios? I have Bios Saturn 1.01 (J) [!] renamed to boot.rom.bin. Is that all i need or do i need a 2nd bios if so which one and what do i rename it to please?

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Re: Sega Saturn Core in Development

Unread post by Stupid Dufus »

I only have one, and it's named "boot.rom" not "boot.rom.bin". Try that and see how it works. ^^

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Re: Sega Saturn Core in Development

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ok thank you :)

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Re: Sega Saturn Core in Development

Unread post by Grechy34 »

Darius Gaiden still no sound effects for me. Not sure if it’s isolated. Single ram setup.

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Re: Sega Saturn Core in Development

Unread post by neogeo81 »

MrMister1985 wrote: Mon May 15, 2023 12:14 am

ok thank you :)

You can put a separate bios as boot.rom in the folder of the game itself if that game needs another bios.

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Re: Sega Saturn Core in Development

Unread post by MrMister1985 »

neogeo81 wrote: Wed May 17, 2023 10:59 am
MrMister1985 wrote: Mon May 15, 2023 12:14 am

ok thank you :)

You can put a separate bios as boot.rom in the folder of the game itself if that game needs another bios.

Great thanx mate :)

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Re: Sega Saturn Core in Development

Unread post by neogeo81 »

New release 08.06.2023

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Re: Sega Saturn Core in Development

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neogeo81 wrote: Fri Jun 09, 2023 7:17 am

New release 08.06.2023

0 Changes on Srg's Github so any new build is the same as the last one

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Re: Sega Saturn Core in Development

Unread post by Rahzadan »

This may have been asked before, and I apologize if it has.

Does anyone know why the analog video output of this core is shifted to the left? No other cores seem to do this with analog out. Digital video seems fine. I'm using the latest single-SDRAM core 08.06.2023, but it's been doing this since the very early revisions. Is this a known issue or something strange with my CRT TV?

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Re: Sega Saturn Core in Development

Unread post by Yagamisan »

Rahzadan wrote: Fri Jun 09, 2023 1:22 pm

This may have been asked before, and I apologize if it has.

Does anyone know why the analog video output of this core is shifted to the left? No other cores seem to do this with analog out. Digital video seems fine. I'm using the latest single-SDRAM core 08.06.2023, but it's been doing this since the very early revisions. Is this a known issue or something strange with my CRT TV?

Same here with my crt.

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Re: Sega Saturn Core in Development

Unread post by TLPD-AVW »

Most likely that accurate analog video output timings are of lower priority currently. My CRT also displays Saturn shifted to the left, but the image signal itself is very stable. This will be probably tweaked some time later.

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Re: Sega Saturn Core in Development

Unread post by FPGA64 »

Its an alpha core, no where near finished and CRT positioning isnt that important currrently compared to getting a working core

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Re: Sega Saturn Core in Development

Unread post by peke »

hi to all. I'm trying to test the latest build but get a "no cd bios found". bios boot normaly. need some help

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Re: Sega Saturn Core in Development

Unread post by peke »

solve the issue replacing mister unstable build, thanks to all

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Re: Sega Saturn Core in Development

Unread post by lsnderick »

New update from SRG320 today, anybody tried it yet? It does not even start on my MiSTer

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