{dutch start}

Men neme een originele R-Type en duwe die in de Turbo-R -> alleen psg geluid.

Men neme een originele R-Type en losse Pana FM-Pac en duwe die in de Turbo-R -> FM- Pac + psg geluid.

Vreemd? Andere spellen werken wel gewoon met de Turbo-R FM-Pac. Iemand van jullie bekend met dit euvel?

edit: English restart-

When I put an original R-Type cartridge in a Turbo-R I only have psg sounds, but when I also put a Pana FM-Pac in it I hear the FM-Pac music also. Other games work perfectly with only the built-in Turbo-R FM-Pac... Strange huh?

Ja, algemeen bekende bug in R-Type.

So now I'll wait for the patch

Sorry I didn't start in English....

People might call it rude in some way and some surely will call it impolite starting in dutch on the international part of the forum.

My guess it searches just for the FM-PAC string and not the built-in MSX-MUSIC string. I think that is quite sloppy code, even though the original FM-PAC is the only external MSX-MUSIC device which can be inserted in an MSX1 and MSX2 computer. Irem probably thought there would be no clones for the external FM-PAC or something...

Quote:

People might call it rude in some way and some surely will call it impolite starting in dutch on the international part of the forum. My guess it searches just for the FM-PAC string and not the built-in MSX-MUSIC string. I think that is quite sloppy code, even though the original FM-PAC is the only external MSX-MUSIC device which can be inserted in an MSX1 and MSX2 computer. Irem probably thought there would be no clones for the external FM-PAC or something...

I didn't mean to be rude, I was just a little too enthausiastic. Sorry for that and I edited my startpost

No problemo. I wasn't meant to be rude either btw.

You weren't meant to be rude, but you turned out that way never the less...
Bill Gates was meant to be a window cleaner, I guess he misunderstood his destiny as well

Anyway, I sought for the 'OPLL' string in the R-Type code, and it's not there.. I'm assuming the code uses something like:
LD A,'O'
CP [HL]
INC HL
JR NZ,WRONG
LD A,'P'
CP [HL]
etc...

If that code is found, it's probably a simple procedure of changing the search of 'PAC2OPLL' to 'APRLOPLL' to get a version that ONLY works with internal MSX-MUSIC. Or, better, patch out the first 4 compares with NOPs to get a universally working one. (The code will still enable the FM-PAC even when it's internal, and although wrong, it doesn't hurt)