Hello

I have a T6963c LCD connected to a PIC24. I'm pretty close to having it wor=
k perfect but Ive got some odd problems and I don't know what im doing wron=
g.

When the address pointer is set to 0x0000, no pixels light up. I have to se=
t the address pointer to 0x0014 (byte 20) to write data to the first 8 pixe=
ls.
As a test, when I set the address to 0x0000 and use a loop to write 0xff to=
 the graphic area, 20 loops go by before the first byte turns on.  From tha=
t point, the address pointer increments and continues to fill up the line a=
nd moves to the next lineas expected (20 bytes / cols).

When I try to set the address pointer to different values and write 0xff,  =
the data will not appear as expected. For example, If I set address pointer=
 to 0x0029 , and write 0xff, the data will show up two or three bytes to th=
e right. If I write to address 0x0028, it works as exptect.  If I choose an=
 address further down the screen, the data will not show up anywhere.

Also, whenever I try changing the data to write to something like 0xAA or 0=
x55, the bits get flipped around. 0xAA will show up as "1010 1001".  0x55 w=
ill turn on pixels "0101 0110".
Another test I did worked fine when I wrote 0xf0 and then 0x0f.

The LCD is 160x128.  I have graphic home set to 0x0000, and graphic area se=
t to 20 bytes. My instruction time is 250ns (8mhz fosc). I use one NOP betw=
een instructions as a delay.

Any ideas ?

Thanks,
Steve

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