picorv32

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README.md	Added scripts/yosys-cmp/	2015-10-30 14:25:04 +01:00
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README.md

Synthesis results for the PicoRV32 core (in its default configuration) with Yosys 0.5+383 (git sha1 8648089), Synplify Pro and Lattice LSE from iCEcube2.2014.08, and Xilinx Vivado 2015.3.

No timing contraints where used for synthesis; only resource utilisation is compared.

Last updated: 2015-10-30

Results for iCE40 Synthesis

Cell	Yosys	Synplify Pro	Lattice LSE
`SB_CARRY`	405	349	309
`SB_DFF`	125	256	114
`SB_DFFE`	251	268	76
`SB_DFFESR`	172	39	147
`SB_DFFESS`	1	0	69
`SB_DFFSR`	69	137	134
`SB_DFFSS`	0	0	36
`SB_LUT4`	1795	1657	1621
`SB_RAM40_4K`	4	4	4

Summary:

Cell	Yosys	Synplify Pro	Lattice LSE
`SB_CARRY`	405	349	309
`SB_DFF*`	618	700	576
`SB_LUT4`	1795	1657	1621
`SB_RAM40_4K`	4	4	4

Results for Xilinx 7-Series Synthesis

Cell	Yosys	Vivado
`FDRE`	671	553
`FDSE`	0	21
`LUT1`	41	160
`LUT2`	517	122
`LUT3`	77	120
`LUT4`	136	204
`LUT5`	142	135
`LUT6`	490	405
`MUXF7`	54	0
`MUXF8`	15	0
`MUXCY`	420	0
`XORCY`	359	0
`CARRY4`	0	83
`RAMD32`	0	72
`RAMS32`	0	24
`RAM64X1D`	64	0

Summary:

Cell	Yosys	Vivado
`FD*`	671	574
`LUT*`	1403	1146