On Mon, Jun 8, 2020 at 7:34 PM Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de> wrote: > On 6/8/20 7:03 PM, Istvan Hegedus wrote: > > Thank you Levente for the information! > > > > I have already noticed in plus4emu source code that the NTSC color > > phases are different while the standard says the color phases are > > rotated with 33 degree which is the case in the documentation (just the > > wrong direction). I will check YAPE too and use color angles from the > > emulators. > > I am investigating the color and luma signals via oscilloscope directly > > on the TED pins and sometimes on the composite output after the RF > > modulator. The luminance levels are also strange and not the same as in > > the documentation... > > What kind of TED are you checking? A 7360 or a 8360? If the > documentation was written for the 7360 and you are looking at the output > of a 8360 that might be the explanation. > Definitely the 8360. I don't have 7360. > When switching from HMOS-I to HMOS-II (8360) MOS might not have bothered > to fine tune the analog parts if the output looked OK. > That explains the differences. Still I don't know where those luminance voltage levels are coming from. Has someone measured them on a 7360? On a 8360 I got something like: L0 1.7v L1 1.9v L2 2.0v L3 2.2v L4 2.68v L5 3.1v L6 3.4v L7 4.4v blanking 1.3v sync 220mv IstvanReceived on 2020-06-09 12:00:02
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