ASIC/FPGA Design and Verification Out Source Services

NGD of LEON 2

NGD script is a very simple one:
#!/bin/bash

ngdbuild -uc leon_xst.ucf -p xc3s1500l-fg676-4 synt.ngc synt.ngd
ngd2vhdl synt.ngd xil.vhd

1. Please note that I use a deprecated command to generate the post synthesize net-list, ngd2vhdl.


2. The UCF is taken from LEON synthesize data. Since I use a different part number, I can not use the pin location.




grep "^[^#]" leon_xst.ucf
NET "clk" TNM_NET = "clk";
TIMESPEC "TS_clk" = PERIOD "clk" 40 ns HIGH 50 %;
OFFSET = IN 7 ns BEFORE "clk";
OFFSET = OUT 12 ns AFTER "clk";
NET "clk" LOC = "AF14";
NET "pio<0>" PULLDOWN;
NET "pio<1>" PULLDOWN;
NET "pio<10>" PULLUP;
NET "pio<14>" PULLUP;
NET "bexcn" PULLUP;
NET "brdyn" PULLDOWN;

Home

simualation Control from CPU in SOC

probe_i2c_slv.vhd wave_simili.pl Lst2vcd.c Download Area