A89: Re: grayscale

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A89: Re: grayscale

It simply toggles the write-only pointer at $600010 (which contains the address that the LCD hardware reads its data from, divided by 8) fast enough to give the illusion of greyscale.

 / Niklas Brunlid
Check out Prosit for the TI-89 / TI-92+ at http://prosit.ticalc.org
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----- Original Message -----
From: Lynn McCartney
To: asm89 ticalc
Sent: Friday, October 22, 1999 6:18 AM
Subject: A89: grayscale

Could some one explain how graphlib makes grayscale?  I know it uses auto-interrupt1.  I just want to know exactly is used to create it.  I appreciatte any help that can be given.  Thanks for you time and trouble.
 
Regards,
Eric Greening
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