Algowire Technologies Fpga Design Engineer Interview Questions and Answers for Experienced

Blocking and non-blocking are two types of assignments in Verilog that differ in their execution order and timing.

• Blocking assignments execute in a sequential order and the next statement waits for the current statement to complete before executing.

• Non-blocking assignments execute concurrently and the next statement does not wait for the current statement to complete before executing.

• Blocking assignments are used for c...read more

Reset is a signal used to initialize the system or a specific module.

• Reset is used to bring the system or module to a known state.

• It is an asynchronous signal that overrides all other signals.

• There are different types of resets such as power-on reset, soft reset, hard reset, etc.

• Reset can be active high or active low depending on the design.

• Reset can be generated internally or externally.

• Reset can be used to clear regi...read more

Task and function are both subprograms in Verilog/SystemVerilog, but task is used for procedural blocks and function is used for expressions.

• Task is used for procedural blocks and can contain delays and event control statements.

• Function is used for expressions and cannot contain delays or event control statements.

• Functions can return a value, while tasks cannot.

• Functions can be called from within tasks or other functio...read more

RAM and FIFO are essential components in FPGA design. Here's how to write code for them.

• For RAM, define the memory size and data width, then instantiate the memory module and write/read data using the address bus and data bus.

• For FIFO, define the depth and data width, then instantiate the FIFO module and write/read data using the write and read pointers.

• Use synchronous or asynchronous reset signals to initialize the RA...read more

Code for read and write file

• Use fopen() function to open a file

• Use fprintf() function to write to a file

• Use fscanf() function to read from a file

• Close the file using fclose() function