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Dual SDRAM Version Still Available?

Posted: Sat Sep 02, 2023 8:51 pm
by rhester72

I saw mention of how to determine if you have the dual-RAM core or not in the menu, and that it isn't included in Update All, but is it actually available (and tracked against public releases) anywhere?


Re: Dual SDRAM Version Still Available?

Posted: Tue Sep 12, 2023 6:37 am
by JakubH

There are two choices, obtain the dulasdram version from the Discord test-builds channel , here is the latest: https://discord.com/channels/6479093974 ... 2813590639 or compile it yourself from source: https://github.com/MiSTer-devel/PSX_MiSTer


Re: Dual SDRAM Version Still Available?

Posted: Tue Sep 12, 2023 12:18 pm
by rhester72

Thank you!


Re: Dual SDRAM Version Still Available?

Posted: Wed Mar 20, 2024 2:39 pm
by PhDTenma

Related with this... Is there a reason why single ram and dual ram cores for PSX are not combined? I mean, in dual ram you have the option of selecting the SPU Ram whereas in the single ram that option is grey out and can't be changed:

https://mister-devel.github.io/MkDocs_M ... ram-select

I'm sure there's a reason for this but couldn't that restriction be removed and thus avoid having both cores?


Re: Dual SDRAM Version Still Available?

Posted: Wed Mar 20, 2024 5:09 pm
by FPGA64
PhDTenma wrote: Wed Mar 20, 2024 2:39 pm

Related with this... Is there a reason why single ram and dual ram cores for PSX are not combined? I mean, in dual ram you have the option of selecting the SPU Ram whereas in the single ram that option is grey out and can't be changed:

https://mister-devel.github.io/MkDocs_M ... ram-select

I'm sure there's a reason for this but couldn't that restriction be removed and thus avoid having both cores?

No the dual ram is needed to allow this option. Without it it just doesnt work. So 2 cores are required


Re: Dual SDRAM Version Still Available?

Posted: Wed Mar 20, 2024 6:45 pm
by PhDTenma
FPGA64 wrote: Wed Mar 20, 2024 5:09 pm

No the dual ram is needed to allow this option. Without it it just doesnt work. So 2 cores are required

Maybe I haven't explained myself well. I know that for it to work, it's necessary to have double SDRAM :) but my comment is because I don't think that restriction is necessary to allow the selector (along with a note saying "if you don't have double SDRAM, don't change this option because it will fail").

Could it be that the two cores are for safety, to prevent, at all costs, someone with a single SDRAM module from mistakenly selecting the wrong option and causing the core to fail?