Graphic display KS107/KS108

[Richi]

Hi friends,

I´m using a graphic display and want to show pictures and text. Text is no problems and I also can show my pictures. But I´m wondering - I need very much ROM space for these pictures. I write pixel for pixel out to the display...

write_display(0xAA); // . . . .
write_display(0x01); // .
write_display(0xFF); // ........

for more lines with same data I use a: for(i=1; i<5; ++i) to save space

Any other methods? My 16F877 is nearly full with only 2 Pages!

[Richi]

Hi all,

my PIC16F877 is not crowded full- only a little bit over 50%?? When I delete 7 or 8 orders, the ROM usage is 50%...

Why can´t I use 100%
This is the error message when I don´t delete the orders:

Hauptmenu
Seg 0033-07FF, 0101 left, need 050B
Seg 0800-0FFF, 0800 left, need 081D
Seg 1000-17FF, 0800 left, need 081D
Seg 1800-1FFF, 0800 left, need 081D
Seg 0000-0003, 0000 left, need 081D
Seg 0004-0032, 0000 left, need 081D
Seg 0033-07FF, 0101 left, need 081D

main

*** Error 71 "\16F877\
Main.c" Line 171(0,1): Out of ROM, A segment or the program is too large
Halting build on first failure as requested.
BUILD FAILED: Wed Jul 19 23:17:54 2006

[PCM programmer]

It looks like you're exceeding the ROM page size, which is 2K words
for the 16F877. Do you have a very large function ? In CCS, all
functions must fit within a 2K page. If your function is larger than
that, then you need to split it into two or more functions.

[Guest]

Store the graphic data in an external serial EEPROM. This is the usual way.