Hi Ruben

> I would like to see the bytes mapped out on the display (pages and
> columns) and the equation of how to get to a specified pixel (Chip, y
> and x address to the display chip and byte mask - Note that y is
> address within a page (column) and x is the page address)

I think that is fairly well covered in the link to the other page

http://www.piclist.com/images/boards/BMP2gLCD18F-jc/index.htm

> Also note that CS1 and CS2 are active low

Definitely active high on this display (at the interface pin anyway). The
KS0108 has more than one CS, one of which is active high

> The KS0108 works with a 3.3V interface

This display has a 5V logic supply and a 5V interface, no mention at
all of 3V3. Samsung's datasheet says 0.7Vdd toVdd @ 5V Vdd

> Also the reading and writing sequence - At some point you need
> to read (or write?) to the chip twice, where one is a dummy read
> (or write). Don't remember exactly where now

Not on this display

> And of course - code for reading the busy signal

Covered on the other page

> I also prefer C-code compared to assembler

This is initially aimed at kids who use PICAXEs. I don't do PICAXE
Basic or C. Hopefully my commenting, explanations and pictures are
enough for them to convert my examples to their language(s)

> I would also start with pixel setting/clearing, line drawing, block=20
> filling/clearing/inverting before going to text

With respect, IMVHO that is even more complicated than text, even
with the understanding of addressing a particular x,y position

> If you have 1k ram available (as I have with my PIC32) it is also a
> lot easier to write to the ram and then just dump it to the LCD when
> done updating

That is kind of what I've done on the other page, converting a BMP

Not all PICs have 1k RAM though, and perhaps not enough program
memory for a set of fonts and pre-drawn screens, so I mentioned the
use of an external EEPROM. A 1MHz 32k x 8 24LC256 is only a
couple of dollars. Theoretically you could use a very modest PIC

> Anyway, keep up the good work - it is nice to find a page like this
> if you are starting out something new

Thanks. The nuts and bolts basics get overlooked too often

Joe
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