MVS 4 slot vs any other

[pierpa86]

Hello guys,
I'm having a curious problem on a 4-slot mvs base,
there seems to be some problem playing the audio correctly,
but the strange thing is that it only does it with the 4-slot base,
all the other bases work. is there any difference between the audio management in this base?

4 Slot

View: https://youtube.com/shorts/pCRjF6hnUEA


2 Slot

View: https://youtube.com/shorts/QbYcIODuuTo


One more question, do you think should i not use 29f1615 memory for C rom ?
Any one have problem with that ?

 

[lithy]

I haven't experienced this noise in particular but what bios is in the 4 slot.

I have decided that mine does not like Unibios 4.0 and went back down to 3.0.

With 4.0 I was getting difficulty starting games with sound and if I did get sound after cycling in attract for a bit, sound would drop out.

Also, my original Nam in somewhat odd in that even when it's working fine, if I put it in slot 1, the 4 slot starts at slot 2 and then cycles around once before going into Nam's attract sequence.

Cool cab by the way!

 

[Neo-Alec]

Sounds like the 4-slot needs to be cleaned and clear the backup ram.

 

[pierpa86]

Sounds like the 4-slot needs to be cleaned and clear the backup ram.

Done, seem its only happen with Nam with intro, since this is not my cab i'm poor... i will test one without NeoGeo gigle on start.