Acronym Attack
This type of device is "Field Programmable" and uses a gate array architecture.
What is FPGA?
The keyword required at the end of a case statement to prevent an inferred latch if not all cases are covered.
default
The formula for Slack.
What is "Slack = Clock Period - Setup - Clock Uncertainty - Path Delay"?
This type of memory is One-time programmable with mask.
What is ROM?
In this machine model, output depends only on current state.
What is a Moore machine?
The specific term for a device that is programmed during the manufacturing process
What is mask-programmable/ASIC?
This unwanted storage element is inferred when you forget the "else" clause in combinational logic.
What is a latch?
This term describes the delay from input to output, which increases when you add pipeline stages.
What is latency?
This memory technology uses fuse links combined with ROM structure and was developed because ROM masks were very expensive.
What is PROM (Programmable ROM)?
This subroutine type can include timing delays like posedge and wait, but cannot be synthesized.
What is a task?
These gates make up Fash-bases PLDS
What are NAND/NOR?
These two SystemVerilog keywords explicitly indicate combinational versus sequential always blocks.
What are always_comb and always_ff?
This term describes operations per unit time, which improves when you add pipelining without slowing the clock.
What is throughput?
This EEPROM variant has rapid erasure time and comes in NOR or NAND technology.
What is Flash memory?
This code generation construct can only be used in concurrent code and cannot appear inside procedural blocks like always statements.
What is a generate statement?
In the context of CRC and random number generation, this is what LFSR stands for.
What is Linear Feedback Shift Register?
This case statement variant treats 'z' as don't-care and uses '?' symbols in case items.
What is casez?
If you have a long combinational path causing a setup violation, this is the primary technique used to fix it without changing the logic function.
What is Pipelining / Register Retiming / Adding FFs?
This type of Flash memory uses block write/read, is cheaper per bit, and is used for data storage rather than code execution.
What is NAND Flash?
For an XOR-based LFSR, This is the "Forbidden State". (XOR vs. XNOR)
All Zeros state (00...)
This Xilinx debug IP allows you to drive or observe internal FPGA signals and stands for Virtual Input/Output.
What is VIO?
This causes code to run repeatedly in an infinite loop. It is only useful with a delay or control construct, otherwise will create a zero delay infinite loop that can block time progression in simulation.
What is always?
Calculate the maximum frequency given: T_clk-q = 2ns, T_logic = 5ns, T_setup = 1ns.
What is (1 / (2+5+1) = 1/8ns = 125MHz)?
This programming technology creates conducting paths by changing insulators to polysilicon and is one-time programmable.
What is anti-fuse?
This delay model filters out glitches that are shorter than the propagation delay.
What is inertial delay?