In this paper, we continue the discussion about of fast numerical simulation of tsunami wave propagation. In case of seismic event offshore Japan, tsunami approaches the nearest shore in approximately 20 minutes. As the calculation of tsunami wave propagation normally serves as a part of any warning system, speeding up this software results in overall better performance for tsunami warning. Implementation of the Mac-Cormack scheme to solve the shallow water system is here described. Field programmable gates array (FPGA) microchip is used to achieve better performance. The numerical solution is compared with the available exact solution to the problem considered.