The purpose of this work is to design a new version (called SNAVA+) of the architecture SNAVA, an SNN hardware emulator implemented on a XilinX Kintex-7 FPGA. SNAVA+ increases the capabilities of SNAVA in order to have a large-scale SNN emulator. It preserves the basic hardware structure of SNAVA, making however several changes to optimize the performance. In particular, SNAVA+ project focuses on the aim to exploit more efficiently the availables resources, to reduce both the area and power consumption of the FPGA. A better use of the resources, in fact, is the main key to increase the potentiality of the SNN emulator, i.e. to increase the number of neurons and synapses simulated.