Mapping ISE Design Suite Command Scripts - 2022.2 English

Mapping ISE Design Suite Command Scripts - 2022.2 English - UG911

ISE to Vivado Design Suite Migration Guide (UG911)

Document ID

UG911

Release Date

2022-10-19

Version

2022.2 English

This section covers the Vivado Design Suite non-project design flow mode only, and is intended for those who plan to use Tcl scripting with the Vivado tools.

You can use Tcl scripts to migrate your ISE Design Suite scripts to implement your design. Similar to the ISE Design Suite, the compilation flow in the Vivado Design Suite translates the design, maps the translated design to device-specific elements, optimizes the design, places and routes the design, and then generates a BIT file for programming.

Table: ISE Design Suite versus Vivado Design Suite Design Flow shows the main differences between the two design flows.

Table 2-1: ISE Design Suite versus Vivado Design Suite Design Flow
ISE Design Suite	Vivado Design Suite
Separate command line applications	Tcl commands in a shell.
XCF/NCF/UCF/PCF constraints	XDC timing and physical constraints
Design constraints (timing or physical) only applied at beginning of the flow	Constraints (timing or physical) can be applied, changed, or removed at any point in the flow.
Multiple database files (NGC, NGD, NCD) required	A single design database (checkpoint with a .dcp extension) written out on-demand at any point in the flow.
Reports generated by applications	Reports generated on-demand at any point in the flow, where applicable.

The table below shows the mapping of ISE Design Suite commands to corresponding Vivado Design Suite Tcl commands. You can run the Tcl commands using any of the following:

• In the Vivado IDE Tcl Console

• At the Tcl prompt ( vivado -mode tcl )

• Through a batch script ( vivado -mode batch -source my.tcl )

Table 2-2: ISE Design Suite Commands and Vivado Design Suite Tcl Commands
ISE Design Suite Command	Vivado Design Suite Tcl Command
xst	read_verilog read_vhdl read_xdc synth_design Note: The commands must be run in this order.
ngdbuild	read_edif read_xdc link_design Note: You need these commands if you are importing from third-party synthesis. If using synth_design , omit these steps. Note: If you are using the Non-Project flow, you need to use the read_edif command to include the NGC file.
map	opt_design power_opt_design (optional) place_design phys_opt_design (optional)
par	route_design
trce	report_timing report_timing_summary
xpwr	read_saif report_power
drc	report_drc
netgen	write_verilog write_vhdl write_sdf
bitgen	write_bitstream
xinfo	report_environment

The ISE Design Suite and the Vivado Design Suite use different algorithms; consequently, a one-to-one mapping is not always possible between the two tool flows. Table: ISE to Vivado Implementation Flow Mappings provides a mapping of frequently-used options between the two implementation flows.

Table 2-3: ISE to Vivado Implementation Flow Mappings
ISE Design Suite	Vivado Design Suite
ngdbuild -p partname	link_design -part
ngdbuild -a (insert pads)	s ynth_design -no_iobuf (opposite)
ngdbuild -u (unexpanded blocks)	Allowed by default, generates critical warnings.
ngdbuild -quiet	link_design -quiet
map -detail	opt_design -verbose
map -lc auto	Feature is no longer needed. Vivado automatically uses less area in quest for better routability and QOR.
map -logic_opt	opt_design, phys_opt_design
map -mt	place_design automatically runs MT with four cores in Linux or two cores in Windows.
map -ntd	place_design -non_timing_driven
map -ol	place_design -directive ⁽¹⁾
map -power	power_opt_design
map -u	link_design -mode out_of_context, opt_design -retarget (skip constant propagation and sweep)
par -pl	place_design -directive ⁽¹⁾
par -rl	route_design -directive ⁽¹⁾
par -mt	route_design automatically runs MT with four cores in Linux or two core in Windows
par -k (keep existing placement and routing)	Default behavior for route_design
par -nopad	report_io generates pad report
par -ntd	route_design -no_timing_driven
Notes: 1. See the Tcl help for more information on the -directive option.