[psyqo] basic "hello" sample doesn't work on Mednafen

The psyqo applications (even basic ones) don't seem to work on Mednafen - here's a "hello" sample - it hangs somewhere after the first frame (but seems to boot and do a clear):


```txt
~/work/ps1dev$ mednafen --version
Starting Mednafen 1.32.1
Build information:
Compiled with gcc 13.2.0
Compiled against zlib 1.3, running with zlib 1.3.1(flags=0x000000a9)
Compiled against SDL 2.30.1(SDL-release-2.30.1-0-g5adbf3765 (Debian 2.30.1+dfsg-4)), running with SDL 2.30.7(SDL-release-2.30.7-0-g9519b9916 (Debian 2.30.7+dfsg-1))
Running with libFLAC 1.4.3
Base directory: /home/eliasdaler/.mednafen
Emulation modules: apple2 nes snes gb gba pce lynx md pcfx ngp psx ss ssfplay vb wswan sms gg sasplay snes_faust pce_fast demo cdplay
```

Here's a .cue/.iso of the demo I built:

[game.zip](https://github.com/user-attachments/files/17293020/game.zip)

And here's the output of "warnings" psx.dbg_mask of Mednafen - not sure if it's relevant, because most of the warnings happen during boot logo:
[dbg_out.txt](https://github.com/user-attachments/files/17293043/dbg_out.txt)