PART=xc7a100tcsg324-1 # loops
#PART=xc7a200tfbg484-1 # loops
#PART=xc7a35tcpg236-1 # fine
#PART=xc7a50tcpg236-1 # fine

pypy3 ${NEXTPNR_XILINX}/xilinx/python/bbaexport.py --device ${PART} --bba ${PART}.bba
${NEXTPNR_XILINX}/bba/bbasm --l ${PART}.bba ${PART}.bin
${NEXTPNR_XILINX}/nextpnr-xilinx --chipdb ${PART}.bin --json top.json --log top_debug.tim --debug