diff --git a/README.md b/README.md index f55a7e5..3706cc5 100644 --- a/README.md +++ b/README.md @@ -17,8 +17,8 @@ ZX81+38rev1,5.zip contains all gerber and drill files for the working updated an The file ZX81+38rev1,5.pdf is the schematic of the corrected revision 1.5 (in black and white) -And I will upload kiCad files after I know revision 1.5 is working well. - We found one more error, that I have fixed in revision 1,6: the keyboard matrix is connected to eigh Address lines, A8 to A15, but the error is that for A8 a version is used that comes from the signal line passing through a 10K resistor (R1) so it is signal A8' , that is not correct, the keyboard needs unattenuated signals, so A8, not A8'. otherwise the resulting dataline does not go low enough to reliably register as "low". + +And I will upload kiCad files after I know revision 1.6 is working well.