We are trying to design a product to transfer data using FIFO mode. The problem now is it doesn't show any respond like when we connect it using UART mode. The LED's just ON alternately for 2 seconds only indicating power on. But, when a flash disk is plugged in, nothing happens. What seems to be the problem?
Should ground all the address lines? Any other hardware config?

By the way, can MCU 8051 be used as a monitor for VDIP1? Is it compatible with VDIP1? Or maybe any other suggestion for the monitor?

Thanks.