So, data sheets reading primers does wonders! Judging by the host parameters supply specified in SM (if I didn’t make a mistake in choosing the data table according to the bit depth (16bit) and RGB565 depth = 65K) for IC38 (S1D13742 Mobile Graphics Engine)
I found outed this table of signal encoding for RGB(565):
in which I did not quite understand the essence of the mapping between controls & picture data flow (indicated in the red frame), correct me if I am wrong in the following conclusion:
shortly: control data bits are in the first pulse events on the parallel channels:
- MSB - MD15 (PIN #131)
- LSB - MD0 (PIN #101)
which we need to catch and reproduce correctlyMD0 = [01h]for dubbing cell mode of picture (highlighted in yellow) which addressing to REG[36h],..
while to catch addressing to REG[36h] (Special Effects Register), you need to IC22 produced that control signal to transfer from IC23A PIN#6
and at these control points it is necessary to install the Arduino translator to convert the control bitMD0 = [01h]together with the rest of the parallel bits coming from the host (and for all other image data - the transparency of the transfer without changes is necessary) for IC38 (S1D13742 Mobile Graphics Engine)
Only I still don’t understand the following solutions on SM (picture above):
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how does IC38 LCD controller work with xWR16 signal from IC25A (in red square mark)
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op-amps IC22; 24; 26 HD74LV245ATELL can work as bidirectional 8-bus keys, then doesn’t it follow from this that there is bidirectional communication between the host and the LCD controller during the initial boot-start and bypass for coordinating the “rules of the game” and possible parameters like QVGA/VGA/WVGA of the supported monitor panel? is this survey possible?
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how does the initial setup of the screen window occur? at the very beginning of the OS launch or every time before redrawing the screen image? since the difficulty is that reverse engineering for the screen periphery will be a very complex project, and I was unable to get into the engineering menu…
Google searches do not provide an answer to this request, and AI does not deny that such a synthesizer mode exists! therefore - if anyone knows how to get to this complementary menu of V-synth GT settings - I will be grateful!
Please, correct me if anyone understands…