I just noticed Universe Unknown expects initial VRAM (or at least a big part of it) to be filled with 0, the "STAGE 1" screen when you start the game will show wrong graphics at the bottom part of the screen otherwise: white lines on my MSX1, and just a big white blob on my MSX2.

Hah, I just reported that bug to Wolf the other day! I saw it happening on my real Yashica YC-64!

All code comments are for: Edwin_

There may well be a bug left. Although after more than a year of not having heard about it, I'm thinking you may very well be seeing an illusion Anyway, it's not an init bug. I have an idea about what you're seeing, but I didn't think anything like that was left in the final release.

Just to be sure, the version of UU you're playing is the *final* version which has the slightly modified MSX2 palette? (e.g. all the reds are more like orange/brown in the final on MSX2)

I dunno, just used the multiROM. YOu should know which version that is

It happens on the final one, what's awkward is that the one sent in for MSXDEV doesn't have this bug
manuel, The Cure is on the multiROM too, does the glitch I described in the VDP statusregister thread happen on your MSX1 too?

I've briefly played The Cure from the multiROM, but I didn't see any bugs. I'll try it again on the YC-64, as I don't remember on which machine I played it.

Wow, Stratos has very heavy corruption when run for the first time on my MSX1... Try it!

The Cure looks fine, though.

By the way, my Yashica YC-64 doesn't have a reset button, but quickly turning off and on also seems to work to switch games

Funny, Stratos works ok for me
Anyway, This is what The Cure does here:
logo for the 1st time: http://home.planet.nl/~haps/crap/msx_cureintro.jpg
in-game sprites (whip in this example): http://home.planet.nl/~haps/crap/msx_curewhip.jpg

And while I'm at it: http://home.planet.nl/~haps/crap/msx_uustage.jpg

(edit: not using the multirom)

SO, we have different types of VRAM or so (As far as the UU thing is VRAM related anyway.)

hap> can you tell me exactly what configuration you used that gave you those results?

MSX1: Canon V-20, 64KB RAM in slot 3, loaded game from cassette. VRAM filled with alternating FF,00,FF,00,etc, results in white lines on the bottom 1/3rd when you first enter that "STAGE 1" screen.
MSX2: modified Philips VG8235, 256KB RAM somewhere in a subslot in slot 3, loaded game from disk by renaming .ROM to .COM. VRAM filled with FF, similar result: completely white instead of those lines.

How is normal RAM initialized on those machines?

MSX2: alternating strings of length $80 of $00 and $FF. MSX1: repeating pattern with strings of length $40 filled with: $FF,$00,$FF,$00, $00,$FF,$00,$FF, $00,$FF,$00,$FF, $FF,$00,$FF,$00, in that order.

If I saw correctly, UU uses a mask on the colourtable on the titlescreen, maybe that's related to it.