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MJoergen / HyperRAM

Portable HyperRAM controller
MIT License
44 stars 11 forks source link

Controller locks up on some boards. #8

Open MJoergen opened 2 months ago

MJoergen commented 2 months ago

This is observed when connecting a PicoLemon HyperRAM module to the PMODs of a QMTech Wukong board.

I suspect the problem is due to the increased latency through the board traces and PMODs.

AnttiLukats commented 1 month ago

There is no significant routing latency, that is not the problem for sure.

AnttiLukats commented 3 weeks ago

The lock up is for sure the same issue as with mega65 R6, there is a BUG in hyperram_rx.vhd code, the code as is would lock up at first time when FIFO is empty! This is a real bug that is easy to fix.