[A83] Re: time between lcd writes

[A83] Re: time between lcd writes

• To: <assembly-83@lists.ticalc.org>
• Subject: [A83] Re: time between lcd writes
• From: <alh@home.se>
• Date: Tue, 4 Feb 2003 13:01:28 +0100 (CET)
• Importance: Normal
• In-Reply-To: <024701c2cb2c$3abb53f0$01891581@BSTERNERL>
• References: <001201c2cb24$844a2cb0$6401a8c0@devbox> <024701c2cb2c$3abb53f0$01891581@BSTERNERL>
• Reply-To: assembly-83@lists.ticalc.org

> The romcall does not delay x many clocks, it simply reads a port until
> it indicates the LCD isn't busy.  You can get a rough estimate but I
> would guess it varies slightly from machine to machine and depending on
> batteries and other variables.
>

It does? It didn't in TI83-, and I assumed it didn't on Ti83+ too, at
least earlier versions of the rom.Checking the lcd driver for the bit is a bit inefficiant, it would almost
always be true on the first try because the delay needed isn't very long.on the ti83- it was somewhere around 30-40 clocks. Have heard something of
it beeing longer on 83+:s though...
--Olle

• [A83] Re: time between lcd writes
• From: Grant Miller <iluvmimac@charter.net>

• [A83] time between lcd writes
• From: "Joe Pemberton" <joe@joepnet.com>
• [A83] Re: time between lcd writes
• From: Brandon Sterner <bms9019@rit.edu>

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