I have done considerable work with graphic displays both B&W and color. What
is the controller on your display? What is the size of the display? Most of the
controllers have ram on board, but the ram is used quite differently. For
example on the Toshiba 6963 controller each byte of ram controls 6 bits of
Generating the fonts and putting data to the screen is not hard, just attention
to detail is required.
Answer the two questions above and let's see if I have some code or examples to
share with you.
----- Original Message -----
From: Gary Olmstead
Sent: Monday, May 03, 2004 4:44 PM
Subject: [68HC12] OT: graphic displays
I have an LCD graphic display that I want to use for a project. I know how
to move the bits from the processor to the display, but I am completely
lost about the best way to generate the bits to begin with.
For a simple example, let's say that I wanted to display numbers as tall as
the display, and proportionately as wide. So instead of being 8 pixels
high, and 6 pixels wide, it would be 64 pixels high, and 48 pixels
wide. Or something like that, because 8X6 includes a bit of empty space,
while 64X48 implies more empty space than I want to leave. But you get the
Phase two is to generate vectors, but I'll be happy with numbers for now.
I assume I set aside an area of RAM where one bit represents one pixel, but
that is as far as I have gotten.
Someone must have solved this, any ideas?
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