Re: RGB Card Question

[bieling@terra.es (Jorge ChB)]

Michael J. Mahon <mjmahon@aol.com> wrote:

> mdj wrote:
> > I would suspect that the TEXT/GRAPHICS softswitch triggers it.
> 
> Correct, and the TEXT softswitch is off in MIXED/GRAPHICS mode.
> 
> > It's possible in this case that the killer doesn't activate until a
> > video cycle ends or starts.

Well, if, as you say, the Color Burst is being gated in by the TEXT
softswitch then certainly it's going to be toggled on and off by this :

>>LOOP:
>>LDA TEXTMODE
>>WAIT (A FEW TENTHS OF A FRAME)
>>LDA GRAPHICSMODE
>>WAIT (A FEW TENTHS OF A FRAME)
>>JMP LOOP

> > I'd suspect that the colour burst being absent in the middle
> > of a frame would produce pretty bizzarre results.

Like for example ?
I ran the program above and nothing "bizarre" came on the screen.
-- 
Jorge Chamorro Bieling