On Thu, 5 Jun 2003 09:41:22 +0100, you wrote:

>>Another handy trick for products with 44780 type LCD
>>modules -  if for example your product uses a 16x2 LCD,
>>plug a 40x2 module in for testing and you instantly
>>have 24x2 characters to output debug info, using all
>>your existing display routines.
>
>Great idea, except won't you need another pin for the second chip =
select? I
>thought these have two 44780 devices on them to get the number of rows.
No - they have one 44780 and  more column driver chips - the interface =
and memory map is exactly the
same.=20

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