PlayStation MiSTer Core Repository Created

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pgimeno
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Re: PlayStation MiSTer Core Repository Created

Unread post by pgimeno »

I imagine that the software emulator is a "reality check" on how the hardware works and behaves, and allows tuning or fixing things, testing ideas etc. faster and with more debugging tools than doing it directly in hardware form. That sounds like good approach.

Watching the Croc demo video suggested that the speed was quite good, so I guess I got a wrong impression. Nevertheless, I think there's value in publishing the emulator, in that users may check behaviours in certain games to see if they match the real machine the way they expect, and if not, report them even before the hardware is implemented, allowing for correction of those aspects and planning the hardware implementation in advance.

But yeah, I guess that's an "ideal world" view and that the reality is that people will complain if the software emulator doesn't perform as they expect, so it may not be a good idea in practice after all.
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Re: PlayStation MiSTer Core Repository Created

Unread post by FPGAzumSpass »

The software emulator doesn't support all games yet and still has bugs and no sound at all, which causes even more bugs.

For Lynx and Wonderswan I "completed" the emulators before doing the hardware, as they were not as big.
But this time it would have taken too long, so i'll be doing it as I did with GBA: implementing the hardware until some games run, then go back to all the missing things.

It's a longer process, but i don't risk forgetting how things work when I finally got 99% of the games working perfect in the emulator some day next year.
Also i need this to keep myself motivated. I cannot work for 1 year on such a project with no (playable) outcome.


As for the croc demo: the playback was at 2x speed, so about 80% of original speed, I didn't want to torture all viewers with the slow games i have to see :)

Edit: I'm really looking forward to test on FPGA, because it will be 100% speed. It will feel like running in fastforward.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Moondandy »

Getting exciting. Has it been decided what the .rbf name will be for this core?
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Re: PlayStation MiSTer Core Repository Created

Unread post by MottZilla »

lroby74 wrote: Thu Sep 02, 2021 1:20 pm
Sectorseven wrote: Wed Sep 01, 2021 3:12 pm So no analog out through the IO board, it will be interesting to see how users react to that.
No CRT no party! :lol: :lol: :lol:
I agree. But this is just the very beginning. It's understandable to be a low priority at the start. Lots of people certainly hope it'll be added eventually. I certainly do as I prefer analog RGB via the I/O board.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Xbytez »

Another PlayStation 1 core development update:

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Re: PlayStation MiSTer Core Repository Created

Unread post by Hyper Space Squid »

This is exciting! Can't wait to play this classic again!
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Re: PlayStation MiSTer Core Repository Created

Unread post by Xbytez »

PS1 MiSTer beta core for PSXNICCC demo and progress so far:

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Re: PlayStation MiSTer Core Repository Created

Unread post by cursedverses »

I downloaded it to see if I could run it - it didn't work for me. Maybe I'll try on a fresh SD card
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Re: PlayStation MiSTer Core Repository Created

Unread post by sfish »

Downloaded it and followed the directions in the howto_niccc.txt file. Worked like a charm. Excellent work! I can't wait to see how this continues to progress.
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Re: PlayStation MiSTer Core Repository Created

Unread post by PikWik »

holy shit,
i was expecting this to be a long-term project. amazing progress !
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Re: PlayStation MiSTer Core Repository Created

Unread post by cursedverses »

Weird. The scph5501.bin and scph7001.bin roms worked for me... And it looks awesome!

EDIT: I'm an idiot with a corrupt scph1001.bin file :D
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Re: PlayStation MiSTer Core Repository Created

Unread post by FPGAzumSpass »

Good to know other BIOS also works. I didn't try yet.
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Re: PlayStation MiSTer Core Repository Created

Unread post by cursedverses »

I stuck with USA BIOSes as I'm unsure if anything in the BIOS would be influenced by timings, etc.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Caldor »

Why are people saying it wont have analog out? I ran the beta core yesterday with the demo on my CRT. Or is it some other type of Analog that is meant?

It did have a strange black stripe that kept scrolling over the display though and I figured that might be because I was using a CRT.
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Re: PlayStation MiSTer Core Repository Created

Unread post by sfish »

Caldor wrote: Tue Sep 14, 2021 10:45 amIt did have a strange black stripe that kept scrolling over the display though and I figured that might be because I was using a CRT.
Make the additions to your mister.ini file as recommended in howto_niccc.txt and you should be able to get rid of that pesky black stripe.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Caldor »

sfish wrote: Tue Sep 14, 2021 11:01 am
Caldor wrote: Tue Sep 14, 2021 10:45 amIt did have a strange black stripe that kept scrolling over the display though and I figured that might be because I was using a CRT.
Make the additions to your mister.ini file as recommended in howto_niccc.txt and you should be able to get rid of that pesky black stripe.
Ahh, thanks. I will try that.
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Re: PlayStation MiSTer Core Repository Created

Unread post by 8bitAndy »

An update was posted on GPU progress:
viewtopic.php?p=33859
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Re: PlayStation MiSTer Core Repository Created

Unread post by Xbytez »

Another PlayStation Core update from Robert:

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Re: PlayStation MiSTer Core Repository Created

Unread post by Captain FPGA »

This is good news
Dreams don't die!
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Re: PlayStation MiSTer Core Repository Created

Unread post by Xbytez »

Another PlayStation core update showing the first part of BIOS now booting up on the MiSTer FPGA.

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Re: PlayStation MiSTer Core Repository Created

Unread post by Neocaron »

A Bit of "bad" news regarding the core is that for sound we might need a dual sdram setup for the first full release anyway. It might be redirected on the DDR3 in an updated version but this was not a promise, sounded more like a hopeful thought. My qestion though, is how would that work with custom build, I have Antonio Villena's Mister and the board is not stock at all I think... would it even be possible to have dual sdram on this board? Even if it fits, would have to remove the IO board? Also I'm gonna throw the stupid question in there, but would a higher capacity than 128 sdram help in this case? Is it even possible to have/build higher capacity sdram at all?

And don't take me wrong, It's awesome to see the core moving along so well. I'm just trying to anticipate a bit about what needs to be done for this to work at this best. I hope there will be easy way for everyone with a Mister to get a second sdram in there.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Hodor »

Neocaron wrote: Fri Oct 08, 2021 3:30 pm A Bit of "bad" news regarding the core is that for sound we might need a dual sdram setup for the first full release anyway. It might be redirected on the DDR3 in an updated version but this was not a promise, sounded more like a hopeful thought. My qestion though, is how would that work with custom build, I have Antonio Villena's Mister and the board is not stock at all I think... would it even be possible to have dual sdram on this board? Even if it fits, would have to remove the IO board? Also I'm gonna throw the stupid question in there, but would a higher capacity than 128 sdram help in this case? Is it even possible to have/build higher capacity sdram at all?

And don't take me wrong, It's awesome to see the core moving along so well. I'm just trying to anticipate a bit about what needs to be done for this to work at this best. I hope there will be easy way for everyone with a Mister to get a second sdram in there.
Maybe it´s a bit early to deal with all this topics. For the moment let´s hope the core reach a full working implementation. Later there will surely be enough time to think about it.

Just a thought :)
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Re: PlayStation MiSTer Core Repository Created

Unread post by PikWik »

im glad to see such quick progress with this core,
but if the dual SDRAM is needed, this will hinder several peoples setups who use SNAC, active cooling, VGA for other cores, dual SD cards, and the user buttons

kind of puts the playstation into a standalone MiSTer setup at that point,
or having to purchase a separate MiSTer specifically for the playstation if you use the IO board for other things

i agree tho, happy to see the PS1 getting developed, but definitely bummed out by that news.
maybe there will be a new IO board that allows for dual SDRAM and the other functions of the IO board ??
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Re: PlayStation MiSTer Core Repository Created

Unread post by Neocaron »

PikWik wrote: Fri Oct 08, 2021 7:48 pm im glad to see such quick progress with this core,
but if the dual SDRAM is needed, this will hinder several peoples setups who use SNAC, active cooling, VGA for other cores, dual SD cards, and the user buttons

kind of puts the playstation into a standalone MiSTer setup at that point,
or having to purchase a separate MiSTer specifically for the playstation if you use the IO board for other things

i agree tho, happy to see the PS1 getting developed, but definitely bummed out by that news.
maybe there will be a new IO board that allows for dual SDRAM and the other functions of the IO board ??
He did say he will try to figure out a way to used DDR3 for sound so that might be the way to get around this. And I'm also hopeful that if the interest is there we will see new addons available to take into account the PSX core needs.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Xbytez »

I will just leave this one here :D

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Re: PlayStation MiSTer Core Repository Created

Unread post by LamerDeluxe »

The speed Robert is able to develop at is just incredible.
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Re: PlayStation MiSTer Core Repository Created

Unread post by Neocaron »

LamerDeluxe wrote: Sat Oct 09, 2021 7:48 am The speed Robert is able to develop at is just incredible.
Indeed! :D
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Re: PlayStation MiSTer Core Repository Created

Unread post by Waifu4Life »

Let us pray to the Retro Gods that 2022 will be the year of the 32-bit cores.
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Re: PlayStation MiSTer Core Repository Created

Unread post by allegrosurf »

MiSTer FPGA PSX Core - first games running, new ingame video, and glitch is gone.

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Re: PlayStation MiSTer Core Repository Created

Unread post by Neocaron »

How did he manage to get everything cleaned up so fast though? This is unbelievable... 0_0
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