Samurai Shodown unplayble demo on MSX+V9990

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By albs_br

Champion (467)

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26-11-2022, 14:29

Has anyone tried to run this demo on a real V9990 hardware?

By erpirao

Paragon (1303)

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26-11-2022, 15:32

I'm not home, but tomorrow night I'll test it on my powergraph and upload it to youtube
msx2 and powergraph ?
turboR and powergraph ?

By albs_br

Champion (467)

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27-11-2022, 15:37

Don't forget to set mapper type to ASCII16.

By erpirao

Paragon (1303)

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27-11-2022, 22:15

I have tried the rom in turboR and msx2+ as ascii16, and it doesn't show what is in the video/webmsx.
videos attached.
turboR
msx2+ sony

By albs_br

Champion (467)

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28-11-2022, 11:35

Oh, that's not good...

Any idea whats the issue here? On openMSX with gfx9000 extension it works perfectly.

By aoineko

Paladin (803)

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28-11-2022, 13:04

@erpirao Can you please try this ROM (https://webmsx.org/?PRESETS=V9990&ROM=https://github.com/aoi...) ? It was tested working on a Powergraph Light.

@albs_br So far, I've never come across anything that works on OpenMSX/WebMSX but not on a real V9990 cartridge.
From the video, the program seems to crash (not just a graphics corruption) so if I were to look for a lead, I would look at the status or interrupt register handling.

By erpirao

Paragon (1303)

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28-11-2022, 14:56

hello, for a while I will not be able to do tests with the powergraph v9990, it seems that there is a damaged Vram module.
Sorry I can't help during this time.

By aoineko

Paladin (803)

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28-11-2022, 15:05

So the bug on the video don't come from the albs_br's tech demo code?

By erpirao

Paragon (1303)

erpirao's picture

28-11-2022, 15:33

Another user who has the same problem, when I have a video, I will upload it.
. I mean that the rom fails like me, not that the v9990 is damaged.

By ToriHino

Paladin (814)

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28-11-2022, 19:30

I did a test on real hardwar as well ( V9990 Power Graph Light + TurboR FS-A1ST), both give problems:
Samurai Showdown
MSXgl

I did not test these yet on my Sony MSX 2+.

As a cross-check, just to be sure, also tried Ghost'n Goblins V9990 on this setup and that works fine.

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