Adriano Camargo Rodrigues da Cunha wrote:
>
> Hi, folks.
>
> I was making some proggies for MSXDOS and tried using the MSX2
> SUBROM under DOS2. Simple like this:
>
> LD IY,(FAF7h)
> LD IX,subrom_routine_i_want_to_call
> CALL 001Ch
>
> Well, what is the result?
> For some routines, a great CRASH.
> For setting palette, NOTHING.
> For reading VDP registers, in some MSX, CRASH.
> For saving a screen area (copy(x,y) to "file.pic"), CRASH.
>
> Anybody knows what I'm doing wrong?
I've experienced the same problem; I've traced the whole stuff and I
found the following: in MSXDOS 1 the slotroutines (like #001C) corrupt
the IY register during the slotswitching!
CU
jon
> Or I can't access some SUBROM routines due to system vars, DOS
> environment, etc, etc, etc?
>
> Thanks,
>
> Adriano Camargo Rodrigues da Cunha ([EMAIL PROTECTED])
> Engenharia de Computacao - UNICAMP
> http://www.adrpage.cjb.net MSX-TR:I have one.And you?
>
> * The Artificial Inteligence doesn't work due to the Natural Stupidity. *
>
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