[A83] Re: lcd driver

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: lcd driver
From: "SUCKER from the old days" <sucker_pvn@hotmail.com>
Date: Thu, 06 Dec 2001 17:15:19 +0000
Reply-To: assembly-83@lists.ticalc.org


>At 16:06 2001-12-06, you wrote:
> >Why did TI use a lcd driver in the 83(+)(SE)?
> >Are there advantages about it?
> >(and what about disadvantages?)
>
>An lcd driver is always used if you have an lcd. The difference is only how
>you communicate with it.
>On the 83 you have to go via two dataports, on more expensive calcs, with
>more advanced lcd drivers (85, 86, 89, 92) you can write to a special
>memory segment that is dedicated to the lcd driver, where it automagically
>reads the image data.
>The difference is most probably only price. the 83 is supposed to be a
>cheap calc, that most people can afford, and thus they choosed a simpler
>cheaper lcd driver.
>the simpler lcd driver in the 83 also allows for a more simple hardware
>design, making the design cost slightly lower too.
>
>///Olle

Somebody knows the lcd drivers of the 85, 86, 89, 92 ??

           SUCKER

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