[A83] Re: Here we go again BLODs
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[A83] Re: Here we go again BLODs
I filled the screen once on a friend's calc (of course) and it wasn't that
hard. You alternate two outputs, and the lines will fill sequentially.
One of them writes from a random loc downward and the other goes top down.
>
>Oh. Like I said, write out the abbrevation, and everything becomes so much
>clearer :)
>In my head theese BLODs had been sorted into a interesting sideeffect of
>the lcd, and nothing useful. Thats why I didn't make the connection BLOD ->
>Blue Line Of Death, because the topic was serious. Thought it was some
>programming tech.
>Anyway. Sounds tricky to control the BLODs that well. As we all probably
>know by now, they appear when you set the LCD in "test mode". The only info
>Toshiba (the maker of the LCD driver chip) gives on this command is "This
>command selects the test mode. Do not use this command." Then one line
>appears. There is no simple way (like writing a certain value) to control
>where on the LCD the BLOD appear.
>There might though (this is just my guessing) be possible to control it by
>timeing it with the LCD in some way.
>Do several calls to this testmode, with exact timeings, filling the screen.
>_maybe_ possible. I don't have a 83 so I can't test.
>Has anyone been able to fill the screen with BLODs? Sounds awfully tricky
>to me.
>The only things I have seen that might be mistaken for this is setting the
>contrast really high.
>
>///Olle
>(pdf with tech info about the LCD driver chip from Toshiba can, as always,
>be found on my site. here:
>http://alh.dhs.org/ftp/calculator/ti83/tech/t6a04.pdf )
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