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      gevietor replied to the thread PSRAM on Teensy 4.1.
      Thanks. I have tested the Teensy with the sketch from Paul Stoffregen. Also thank you all for the suggestions and hints. I re-soldered all pins (in particular D1 and D2) and carefully cleaned the board. To no avail. The only explanation I have...
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      Today I tried to solder PSRAM chips (APS6404L) onto a Teensy 4.1 board. Both chips did not work, but seem to be defect. The following error messages were reported while testing the memory: First Chip error Message: 15:17:05.580 -> EXTMEM Memory...
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