
Experimental SDRAM access on ULX3S.

To try, flash bitstream and Forth image:

openFPGALoader --board=ulx3s --write-flash ulx3s.bit
openFPGALoader --board=ulx3s --write-flash -o 0x200000 --file-type bin mecrisp-quintus-ulx3s-with-tools.bin

Open terminal with 115200 baud 8N1 and press the button labeled "PWR" next to the SDRAM to reset.

