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.
