1 Mars 2020 - PDF added with schematics and full investigation of the RTC logic and also non documented chips on-board investigated and explain. Check it out š Step By Step and Images from live implementation. Cred to Henrik Gilvad, Thor and Hans Otten for the original scan and schematics
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I get it! The methods described in Hansotten's sviombouw.pdf file are completely different. The one for NYYRIKKI is to convert the computer to MSX2 without clock and the one for CUC is to convert it to MSX2 with clock. Some time ago I had first applied the NYYRIKKI method and then the CUC method (a lot of trouble!). Now I undo the CUC method and redo the NYYRIKKI method, and then apply your method. It works perfect and it is very simple and clear. The problem I had with the CUC method is that it drained too much power from the battery. Take this opportunity to comment on an error, in your circuit you have not connected the case ofā¦
Hello again. Did you make this mod over msx2 converting by NYYRIKKI (no clock) or CUC version?
No problem. Thank you for the guide!
New PDF uploaded with correct diodes šš»
Sorry its correct 1N4148 should it be