> At 02:33 AM 12/11/98 -0200, you wrote:
> >Hello all.
> >
> >I'm trying to run some softwares here (most demos) in my brazilian MSX,
> >which runs with my TV in 60hz. Those software switch to 50 hz, so my TV
> >can't display the image right. How can i fix this?
>
> Typical assembly fragment that switches to 50Hz looks like this:
> LD A,2
> OUT (#99),A
> LD A,#89
> OUT (#99),A
> in bytes that is:
> 3E 02
> D3 99
> 3E 89
> D3 99
> If you change "02" into "00", you'll get 60Hz display.
> Some programs use 192 lines, in that case "82" should be changed into "80".
>
> However, this won't fix all programs:
> - some programs use another (more compatible) way of changing frequency
> - some programs depend on the 50Hz frequency and will not run well on 60Hz
> (because they have less clock ticks to spend per interrupt)
>
> Bye,
> Maarten
Hello,
I do not know if you know the program cheatmaster. This program is
loaded before you load the demo and can be used to do switsh vdp
frequency.
MSX greatings,
Peter
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