Re: A86: Many Stupid Questions
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Re: A86: Many Stupid Questions
Actually, I don't think anything bad will happen if you don't change the
value at $C008. But the TI-OS won't know what you set it to, so the next
time you change it (or the calc is turned on?), it will be reset back to
what it was before you changed it.
At 09:07 AM 8/19/98 -0700, you wrote:
> I've tried messing around with contrast before by (stupidly) mangling a
>TI-83 prog and putting it on the 86 to see what would happen... the
>gremlins in the calculator ate the screen.
>
>
>
> Is it possible to adjust the contrast of individual pixels, or do
>>you have to adjust the contrast of the whole screen? A bit of code:
>ContDown:
> ;since port 2 is read only, we must get the
> ;current contrast from a memory address
> ;decriment it, then load it back to the mem
> ;and to the port also
> ;return to calling code It is
>important that u load the new contrast to both places, else bad
>things can happen!! Later,
>CHICANE
>
>
--
David Phillips
mailto:electrum@tfs.net
ICQ: 13811951
AOL/AIM: Electrum32
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