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Updated Xilinx 7-Series area stats

This commit is contained in:
Clifford Wolf 2015-07-01 21:48:51 +02:00
parent 34193bf9df
commit 553b1ef143
2 changed files with 19 additions and 23 deletions
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22
README.md
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@ -533,17 +533,19 @@ place&route static timing analysis with `report_timing`.
| Xilinx Virtex-7T | -3 | 2.4 ns (416 MHz) |
The following table lists the resource utilization in area-optimized synthesis,
as reported by Vivado 2015.1 post optimization with `report_utilization`. The
"small" core is PicoRV32 configured down to a RV32E cpu, the "regular" core is
PicoRV32 with its default settings and the "large" core is PicoRV32 with
enabled PCPI, IRQ and MUL features.
as reported by Vivado 2015.1 post optimization with `report_utilization`.
PicoRV32 "small" is the core without counter instructions, with externally
latched `mem_rdata`, and without catching of misaligned memory access and
illegal instructions.
PicoRV32 "regular" is simply the core with its default settings.
And PicoRV32 "large" is with enabled PCPI, IRQ and MUL features.
| Core Variant | Slice LUTs | LUTs as Memory |
|:------------------ | ----------:| --------------:|
| PicoRV32 "small" | 855 | 48 |
| PicoRV32 "regular" | 996 | 48 |
| PicoRV32 "large" | 1814 | 88 |
*Note: Most of the size reduction in the "small" core comes from eliminating
the counter instructions, not from reducing the size of the register file.*
| PicoRV32 "small" | 828 | 48 |
| PicoRV32 "regular" | 968 | 48 |
| PicoRV32 "large" | 1742 | 88 |

20
scripts/vivado/synth_area_top.v
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@ -1,7 +1,6 @@
module top_small (
input clk, resetn,
output trap,
output mem_valid,
output mem_instr,
@ -14,13 +13,12 @@ module top_small (
);
picorv32 #(
.ENABLE_COUNTERS(0),
.ENABLE_REGS_16_31(0),
.ENABLE_REGS_DUALPORT(1),
.LATCHED_MEM_RDATA(1)
.LATCHED_MEM_RDATA(1),
.CATCH_MISALIGN(0),
.CATCH_ILLINSN(0)
) picorv32 (
.clk (clk ),
.resetn (resetn ),
.trap (trap ),
.mem_valid(mem_valid),
.mem_instr(mem_instr),
.mem_ready(mem_ready),
@ -91,13 +89,11 @@ module top_large (
output [ 3:0] mem_la_wstrb,
// Pico Co-Processor Interface (PCPI)
output pcpi_insn_valid,
output pcpi_valid,
output [31:0] pcpi_insn,
output pcpi_rs1_valid,
output [31:0] pcpi_rs1,
output pcpi_rs2_valid,
output [31:0] pcpi_rs2,
input pcpi_rd_valid,
input pcpi_wr,
input [31:0] pcpi_rd,
input pcpi_wait,
input pcpi_ready,
@ -126,13 +122,11 @@ module top_large (
.mem_la_addr (mem_la_addr ),
.mem_la_wdata (mem_la_wdata ),
.mem_la_wstrb (mem_la_wstrb ),
.pcpi_insn_valid(pcpi_insn_valid),
.pcpi_valid (pcpi_valid ),
.pcpi_insn (pcpi_insn ),
.pcpi_rs1_valid (pcpi_rs1_valid ),
.pcpi_rs1 (pcpi_rs1 ),
.pcpi_rs2_valid (pcpi_rs2_valid ),
.pcpi_rs2 (pcpi_rs2 ),
.pcpi_rd_valid (pcpi_rd_valid ),
.pcpi_wr (pcpi_wr ),
.pcpi_rd (pcpi_rd ),
.pcpi_wait (pcpi_wait ),
.pcpi_ready (pcpi_ready ),