Afaik no, unless there is a possibility to replace faulty ASICs with a
chip like Altera, programed to mimic the ASIC. I had unfortunally the
same problem, but I have a working SAM for spare parts. After replacing
the ASIC the palette went to normal. Maybe if you obtain a faulty SAM
with working ASIC... On SAM Shows like ORSAM I heard, there are some SAM
Boards with ASIC given away...
There is still a very small chance that the ASIC is okay, and a resistor
or capacitor was blew up.
Maybe someone else has a idea about this?
Thomas Harte schrieb:
It seems likely to be the bright signal. Sam the Juggler runs with
three shades of blue in the sky where there should be six, and the red
square behind Sam's right arm is a solid red whereas in Sim Coupe it
contains two separate red colours. Furthermore, the top of Sam's left
leg blends in with the white square behind it, when it should be a
touch darker.
Assuming this diagnosis is correct, is there anything I can do that is
likely to be easier and/or cheaper than simply obtaining a Sam with a
functioning ASIC?
On 19 Feb 2009, at 20:42, LCD wrote:
Thomas Harte schrieb:
My next Sam physical hardware question — is there any reason why my
Sam might find itself merging similar colours? Check out:
http://members.allegro.cc/ThomasHarte/temp/Image(072).jpg
That's how the first screen of Prince of Persia looks from both the
SamCo Birthday disk and Blitz 8 (thought I'd check, since the
birthday disk one is clearly an earlier version of the demo and, for
all I knew, predates the game being completed). It's not a great
photograph, but it does demonstrate the point. The walls on the TV
are as they appear in that photo, a single solid blue. The effect is
the same through both the aerial socket and RGB SCART, with or
without the Trinity plugged in. I have no other hardware attached.
Maybe the Bright-Signal of your ASIC chip is gone, or there is a
short circuit in the DAC for blue output.
