Simulation signal viewing method and system for digital product

A simulation system for a digital product, comprising:

• a field programmable gate array (FPGA), configured to load the digital product and perform a plurality of simulation verifications, wherein the simulation verifications comprise, in a sequential order, a first simulation verification and a second simulation verification;
• a controller, configured to control the FPGA to perform the simulation verifications;
• and
• a storage device, configured to store simulated data read and recorded by the controller,
• wherein the controller, when controlling the FPGA to perform the first simulation verification on the digital product, is configured to:
• read external port status data of all external ports of the digital product in real time, and meanwhile read all internal status data of the digital product once at each interval;
• and
• after the first simulation verification is completed, in response to determining that data of a certain clock cycle of the digital product needs to be viewed in a backtracking manner, read the internal status data of the digital product stored at a last time point before said certain clock cycle and the external port status data of the external ports at said last time point from the recorded simulated data;
• wherein the controller, when controlling the FPGA to perform the second simulation verification on the digital product, is configured to:
• load the digital product into the FPGA, and set the external port status data of the external ports and the internal status data recorded at said last time point as initial status data of the digital product;
• and
• start the FPGA to operate to one clock cycle before the certain clock cycle that needs to be viewed, and read all the internal status data of the digital product clock by clock until the certain clock cycle that needs to be viewed is reached.