Banana pi BPI-M64 quad-core 64 bit SBC with allwinner R18 chip design
allwinner A64 chip and R18 chip is PIN to PIN compatibility, so BPI-M64 just replace R18 ,A64 chip onboard, easy to DIY new product.
hardware interface:
all spec is same as BPI-M64, just main chip difference. you can see online gitbook