Quote:
Originally Posted by lolita";p="
please do not experiment too much with s1giveio. It is possible to cause hardware damage if you set the I/O ports wrong
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Ok, I'm sorry! :roll:
Quote:
Originally Posted by lolita";p="
Please test the GPOA pins again via port EE and determine if your player really does have 2 backlight control lines. Try 1, 2, 4, and 8 only -- these turn on only GPOA0,A1,A2,and A3. Do not disturb the upper 4 bits of the port, leave them at 0.
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I have "expanded" the test in order to use
only the lower nibble, and this is the result:
Code:
-o ee 0 ; backlight off
-o ee 1 ; backlight off
-o ee 2 ; backlight off
-o ee 3 ; backlight off
-o ee 4 ; BACKLIGHT ON
-o ee 5 ; BACKLIGHT ON
-o ee 6 ; BACKLIGHT ON
-o ee 7 ; BACKLIGHT ON
-o ee 8 ; backlight off
-o ee 9 ; backlight off
-o ee A ; backlight off
-o ee B ; backlight off
-o ee C ; BACKLIGHT ON
-o ee D ; BACKLIGHT ON
-o ee E ; BACKLIGHT ON
-o ee F ; BACKLIGHT ON
Mmmh... can be that the backlight is connected only on A3, and A2 is for another use?