Vassilis Virvilis wrote:

Antonino A. Daplas wrote:

quoted

lspci -v -d 5333:8d04

OK I have done a lot of tests. First my device is
5333:8d01 and the non-prefetchable memory is at ec000000
so we have

#define PCI_ID        0x8d01  /* put the PCI id of the device here */
#define PCI_PBASE     0xec000000  /* put the start address of the PCI
resource here */

Ok. I tried both X (with use bios), and SDL testsprite in 640x480,
800x600, 1024x768 at
8, 16, 24 bpp.

testsprite is a SDL demo that accepts the following options
(-width, -height, -bpp). I made both sets of tests in a medion TFT 18
screen and in an
EIZO F520 CRT.

All X modes are working.
SDL works for 1024x768 bpp=* in CRT and TFT
SDL work in 800x600 bpp={16, 24} (not 8bpp) only in TFT and __not in CRT__

I am attaching the output of savagedump for all modes, for both monitors
(#36),
just for future reference.

I will try to understand the differences but the registers are too many
and without
documentation it is a bit hopeless I am afraid. Or is there

Too many differences since the timings for the 2 modes are also different.
If you can match the timings, as shown by fbset and xvidtune, this should
minimize the variation.

documentation somewhere publicly
available?

There are no docs.

Is there any way to replay the working set of registers to get the
correct mode settings?

savagefb does save the initial registers and reuses part of them when setting
the mode, so if you can boot with vga= parameter that matches the initial mode
of savagefb, it might help. Try this:

video=savagefb:1024x768-16@60 vga=0x317

Tony


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