PS1 No BIOS found, expect errors

This topic has 21 replies, 4 voices, and was last updated 9 years ago by Floob.

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10/26/2015 at 21:19 #108478

g0nz0uk
Participant

Hello,

I’m trying to get a game on the PS1 working and I get the message “No BIOS found, expect errors” when I try to run it.

I have added the BIOS files to /home/pi/RetroPie/BIOS like I do for the other emulators.

The main one I have added is SCPH1001.BIN

Any ideas why it isn’t seeing the BIOS file?

Also tried this

pi@raspberry ~ $ cd /opt/retropie/configs/psx
pi@raspberry /opt/retropie/configs/psx $ nano retroarch.cfg
Added the following line to the bottom of this file:

system_directory= /home/pi/RetroPie/BIOS

10/27/2015 at 13:51 #108530

dankcushions
Participant

~~long shot, but are you sure it’s “RetroPie” ? on my system it’s lowercase. i imagine it’s all case sensitive as per the rest of the operating system.~~

(ignore this, mine is RetroPie also!)

10/27/2015 at 15:07 #108534

petrockblog
Keymaster

I think it should be lowercase.

Check the checksum also

http://wiki.libretro.com/index.php?title=PCSX_ReARMed

10/27/2015 at 15:08 #108535

petrockblog
Keymaster

if it works lowercase then please do update the wiki page https://github.com/RetroPie/RetroPie-Setup/wiki/Playstation-1

10/27/2015 at 23:14 #108556

g0nz0uk
Participant

renamed to scph1001.bin and still get the same error

10/28/2015 at 02:34 #108567

petrockblog
Keymaster

Did you compare the checksum ?

10/28/2015 at 08:28 #108580

g0nz0uk
Participant

Sorry I missed that part, I’ve just looked at the link but can’t see how I verify the checksum, how do I check it’s the right checksum?

10/28/2015 at 08:41 #108584

petrockblog
Keymaster

Google “how to checksum a file md5” or something – if on windows there are gui tools. on terminal on linux you can use “md5sum [file]”

10/28/2015 at 14:57 #108595

g0nz0uk
Participant

Checksum is fine.

Just defaults to the HLE BIOS.

It’s as if Retroarch isn’t even looking the BIOS folder for these files. Is the path set somewhere as I can’t see it in the Retroarch.cfg?

10/28/2015 at 19:52 #108624

Floob
Member

Can you confirm you are using RetroPie 3.1 (or 3.2 or other) from the image provided on this site, as opposed to a source or binary install? Then I’ll do the same test and check it out.

10/28/2015 at 20:09 #108626

g0nz0uk
Participant

I’m using 3.1 from this site, thanks.

10/28/2015 at 23:07 #108646

Floob
Member

Ok, I wrote a clean 3.1 to the SD card, expanded the filesystem and copied

SCPH1001.BIN to the folder /home/pi/RetroPie/BIOS

The filesize of the file I used is 524,288 bytes and has an MD5 of
924e392ed05558ffdb115408c263dccf

that worked fine with the PSX games I tried, it worked fine upper or lower case.
It couldnt find the bios file if I renamed it to a random filename.

What is the MD5 of your BIOS? Does it match any here?
https://github.com/RetroPie/RetroPie-Setup/wiki/Playstation-1

10/29/2015 at 01:06 #108660

g0nz0uk
Participant

Hi, mine looks fine, see image, I’m on 3.1 too.

10/29/2015 at 01:41 #108666

Floob
Member

If you can confirm the user Pi has permission to read the bios file I would think it may be a customisation you have made to a config file.
On my test I made no changes to them at all and it works fine.
Are you able to reset them or try on a separate SD card to test?

10/29/2015 at 09:44 #108688

g0nz0uk
Participant

Hi Floob, I’m not sure how to check the permissions so will Google this and let you know.

I’ve ordered a new SD card and will put the latest version on it.

10/29/2015 at 17:57 #108720

g0nz0uk
Participant

Permissions look good on the file:

\\RETROPIE\configs\psx\Retroarch.cfg

Pi user has read/write access
Pi group has read access

Are you able to compare my retroarch file with yours?

https://www.dropbox.com/s/gjvls7ql98195a1/retroarch.cfg?dl=0

10/29/2015 at 19:56 #108730

Floob
Member

I mean what are the permissions on the bios file.

What do you get if you use PuTTY and logon to the Pi, run this command
ls -lah /home/pi/RetroPie/BIOS/{BIOS filename}

Your retroarch.cfg is wildly different to what you really need.
Here are the originals, untouched which is what I’m using

/opt/retropie/configs/all/retroarch.cfg
http://pastebin.com/raw.php?i=15Nan1C1

/opt/retropie/configs/psx/retroarch.cfg
http://pastebin.com/raw.php?i=bUYH1A5b

If you really want to edit your system specific retroarch.cfg with custom settings for RetroArch, check this video out

10/29/2015 at 20:18 #108732

g0nz0uk
Participant

Thanks Floob, I will test this tonight. Thanks for your time on this, most appreciated.

10/29/2015 at 22:41 #108740

g0nz0uk
Participant

First part:

pi@retropie ~ $ ls -lah /home/pi/RetroPie/BIOS/scph1001.bin
-rw-r–r– 1 pi pi 512K Oct 28 13:53 /home/pi/RetroPie/BIOS/scph1001.bin

10/29/2015 at 23:53 #108758

g0nz0uk
Participant

Adding system_directory = /home/pi/RetroPie/BIOS to opt/retropie/configs/all/retroarch.cfg fixed it.

If I edit /opt/retropie/configs/psx/retroarch.cfg it gets overwritting by the contents of /opt/retropie/configs/psx/retroarch.cfg – weird eh.

I tested WipEout 3 and maybe it is the power of the Pi2 but, the sound stutters at times, plus the graphics are grainy, I wondered if there are any tweaks/Filters?

Thanks

10/30/2015 at 12:13 #108786

dankcushions
Participant

there’s an option to increase the resolution – have a look in the retroarch menu under ‘core options’. i forget what it’s called. however, it’ll probably just exacerbate your sound stutters! PCSX has no texture filters, aside from all the usual retroarch entire screen shaders.

10/30/2015 at 20:47 #108837

Floob
Member

Does the performance on your WipeOut match the video here?
Although first I would sort out those retroarch.cfg files – I dont know what you mean when you say that file overwrites itself. I’d be tempted to start with a clean install – or at least just use the defaults I provided above.
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