SHDL | Board
SHDL tool includes graphical simulation of some FPGA board peripheral components: buttons, LED, rotary encoder and various displays. Board support can be enabled on the Setup window and the board is then accessed by clicking on a Board button.
Connection of a circuit model with the board is through predefined port signal names:
The code board1 uses described peripheral units. By click on Start, a simulation with interactive board graphics is performed.
entity board1 btn: in u4; rot: in u2; led, bcd: out u8; begin led <= rot & "00" & btn; if btn(0) then bcd <= bcd + 1 end end