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bjmurphy

9 Posts
Posted - 17 Sep 2003 :  12:31:31  Show Profile  Email Poster
Hello,

Does anyone know the correct frame buffer registers for an Hitachi SX25S003-ZZA.

bngo

4 Posts
Posted - 17 Sep 2003 :  13:01:52  Show Profile  Email Poster
Hi,

For GC+ below is the setting we used

;Hitachi SX25S003 Dual Passive VGA 800x600 LCD
0xB0100000 0x00000004 ; LCCR0
0xB0100020 0x01011710 ; LCCR1
0xB0100024 0x0000152B ; LCCR2
0xB0100028 0x0000FF0B ; LCCR3

Brian
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rwhaley

628 Posts
Posted - 18 Sep 2003 :  08:50:58  Show Profile  Email Poster
For Linux, you also need either:

0xB0100010 0xFFFF1000; 8bpp

or

0xB0100010 0xFFFF2000; 16bpp


See topic 736 for further details.
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bjmurphy

9 Posts
Posted - 18 Sep 2003 :  09:43:13  Show Profile  Email Poster
This LCD has 12bpp. Is their a register value for 12bpp
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bngo

4 Posts
Posted - 18 Sep 2003 :  10:15:32  Show Profile  Email Poster
Hitachi SX25S003-ZZA is dual 8-bpp, you can use 0xB0100010 0xFFFF1000; 8bpp
Brian
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rwhaley

628 Posts
Posted - 18 Sep 2003 :  10:18:07  Show Profile  Email Poster
The LCD bpp is different from the framebuffer bpp. If your LCD has only 12bpp you should select 8bpp for the framebuffer, this will result in a 256 color palette (hence the 8bpp), each color in the palette will have 12bpp.
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