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authorjoshua <joshua@fedora.framework>2022-05-14 23:30:38 -0500
committerjoshua <joshua@fedora.framework>2022-05-14 23:30:38 -0500
commitb8936029065835366e9e057a219c0c5194db8662 (patch)
tree31e50944ac6e23850f92bb0e0f6d851b74307f60 /verilog/alu/v2
parentd6b7d26cf51b4b3a7b5604f9b81bb43f55cbc33c (diff)
downloadriscv-processor-inorder-b8936029065835366e9e057a219c0c5194db8662.tar.gz
Verilog update
Diffstat (limited to 'verilog/alu/v2')
-rw-r--r--verilog/alu/v2/Makefile35
-rw-r--r--verilog/alu/v2/alu2.v40
-rw-r--r--verilog/alu/v2/aluOp.h16
-rw-r--r--verilog/alu/v2/aluOp.vh16
-rw-r--r--verilog/alu/v2/crab.pcf254
-rw-r--r--verilog/alu/v2/tbalu.cpp45
6 files changed, 406 insertions, 0 deletions
diff --git a/verilog/alu/v2/Makefile b/verilog/alu/v2/Makefile
new file mode 100644
index 0000000..6de97ff
--- /dev/null
+++ b/verilog/alu/v2/Makefile
@@ -0,0 +1,35 @@
+PROJ=alu2
+VERION:=r0.2
+RM = rm -rf
+COPY = cp -a
+PATH_SEP = /
+
+
+crab: ${PROJ}.dfu
+
+dfu: ${PROJ}.dfu
+ dfu-util -D $<
+
+
+%.json: %.v
+ yosys -p "read_verilog $<; synth_ecp5 -top ${PROJ} -json $@"
+
+%_out.config: %.json
+ nextpnr-ecp5 --json $< --textcfg $@ --25k --package CSFBGA285 --lpf crab.pcf
+
+%.bit: %_out.config
+ ecppack --compress --freq 38.8 --input $< --bit $@
+
+%.dfu : %.bit
+ $(COPY) $< $@
+ dfu-suffix -v 1209 -p 5af0 -a $@
+
+sim:
+ verilator -Wall --cc --exe --build tbalu.cpp alu.v --trace && ./obj_dir/Valu > out
+simclean:
+ rm -rf obj_dir/* out
+
+clean:
+ $(RM) -f ${PROJ}.bit ${PROJ}_out.config ${PROJ}.json ${PROJ}.dfu
+
+.PHONY: prog clean
diff --git a/verilog/alu/v2/alu2.v b/verilog/alu/v2/alu2.v
new file mode 100644
index 0000000..d7a0324
--- /dev/null
+++ b/verilog/alu/v2/alu2.v
@@ -0,0 +1,40 @@
+`default_nettype none
+`timescale 1us/1ns
+
+`include "aluOp.vh"
+
+module alu2
+(
+input wire [31:0] in1,
+input wire[31:0] in2,
+input wire[3:0] op,
+output wire[31:0] out
+);
+
+
+wire [31:0] diff = in1 - in2;
+reg [31:0] result;
+
+always @ (*)
+begin
+ case (op)
+ `ADD: result = in1 + in2;
+ `SUB: result = diff;
+ `XOR: result = in1 ^ in2;
+ `OR: result = in1 | in2;
+ `AND: result = in1 & in2;
+ `SLL: result = in1 << in2;
+ `SRL: result = in1 >> in2;
+ `SLTU: result = (in1 < in2 ? 32'b1 : 32'b0);
+ `NONE: result = in1;
+ `SLT: result = (in1[31] == in2[31] ? (diff[31] == 1'b0 ? 32'b0 : 32'b1) : (in1[31] == 1'b1 ? 32'b1 : 32'b0) );
+ `SRA: result = (in1 >> in2) | (in1[31] == 1'b0 ? 32'b0 :
+ 32'hFFFFFFFF << ((in2[4] ? 0 : 5'b10000) + (in2[3] ? 0 : 5'b01000) +
+ (in2[2] ? 0 : 5'b00100) + (in2[1] ? 0 : 5'b00010) + (in2[0] ? 0 : 5'b00001))
+ );
+ default: result = 32'b0;
+ endcase
+end
+
+assign out = result;
+endmodule
diff --git a/verilog/alu/v2/aluOp.h b/verilog/alu/v2/aluOp.h
new file mode 100644
index 0000000..999dac2
--- /dev/null
+++ b/verilog/alu/v2/aluOp.h
@@ -0,0 +1,16 @@
+#ifndef ALU_OP
+#define ALU_OP
+
+#define ADD 0
+#define SUB 8
+#define XOR 4
+#define OR 6
+#define AND 7
+#define SLL 1
+#define SRL 5
+#define SRA 13
+#define SLT 2
+#define SLTU 3
+#define NONE 15
+
+#endif
diff --git a/verilog/alu/v2/aluOp.vh b/verilog/alu/v2/aluOp.vh
new file mode 100644
index 0000000..b6e916f
--- /dev/null
+++ b/verilog/alu/v2/aluOp.vh
@@ -0,0 +1,16 @@
+`ifndef ALU_OP
+`define ALU_OP
+
+`define ADD 4'b0000
+`define SUB 4'b1000
+`define XOR 4'b0100
+`define OR 4'b0110
+`define AND 4'b0111
+`define SLL 4'b0001
+`define SRL 4'b0101
+`define SRA 4'b1101
+`define SLT 4'b0010
+`define SLTU 4'b0011
+`define NONE 4'b1111
+
+`endif
diff --git a/verilog/alu/v2/crab.pcf b/verilog/alu/v2/crab.pcf
new file mode 100644
index 0000000..c0d91c5
--- /dev/null
+++ b/verilog/alu/v2/crab.pcf
@@ -0,0 +1,254 @@
+LOCATE COMP "clk48" SITE "A9";
+IOBUF PORT "clk48" IO_TYPE=LVCMOS33;
+FREQUENCY PORT "clk48" 48.0 MHz;
+
+LOCATE COMP "ddram_a[0]" SITE "C4";
+IOBUF PORT "ddram_a[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[0]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[1]" SITE "D2";
+IOBUF PORT "ddram_a[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[1]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[2]" SITE "D3";
+IOBUF PORT "ddram_a[2]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[2]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[3]" SITE "A3";
+IOBUF PORT "ddram_a[3]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[3]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[4]" SITE "A4";
+IOBUF PORT "ddram_a[4]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[4]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[5]" SITE "D4";
+IOBUF PORT "ddram_a[5]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[5]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[6]" SITE "C3";
+IOBUF PORT "ddram_a[6]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[6]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[7]" SITE "B2";
+IOBUF PORT "ddram_a[7]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[7]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[8]" SITE "B1";
+IOBUF PORT "ddram_a[8]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[8]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[9]" SITE "D1";
+IOBUF PORT "ddram_a[9]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[9]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[10]" SITE "A7";
+IOBUF PORT "ddram_a[10]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[10]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[11]" SITE "C2";
+IOBUF PORT "ddram_a[11]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[11]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[12]" SITE "B6";
+IOBUF PORT "ddram_a[12]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[12]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[13]" SITE "C1";
+IOBUF PORT "ddram_a[13]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[13]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[14]" SITE "A2";
+IOBUF PORT "ddram_a[14]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[14]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_a[15]" SITE "C7";
+IOBUF PORT "ddram_a[15]" SLEWRATE=FAST;
+IOBUF PORT "ddram_a[15]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_ba[0]" SITE "D6";
+IOBUF PORT "ddram_ba[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_ba[0]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_ba[1]" SITE "B7";
+IOBUF PORT "ddram_ba[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_ba[1]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_ba[2]" SITE "A6";
+IOBUF PORT "ddram_ba[2]" SLEWRATE=FAST;
+IOBUF PORT "ddram_ba[2]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_ras_n" SITE "C12";
+IOBUF PORT "ddram_ras_n" SLEWRATE=FAST;
+IOBUF PORT "ddram_ras_n" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_cas_n" SITE "D13";
+IOBUF PORT "ddram_cas_n" SLEWRATE=FAST;
+IOBUF PORT "ddram_cas_n" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_we_n" SITE "B12";
+IOBUF PORT "ddram_we_n" SLEWRATE=FAST;
+IOBUF PORT "ddram_we_n" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_cs_n" SITE "A12";
+IOBUF PORT "ddram_cs_n" SLEWRATE=FAST;
+IOBUF PORT "ddram_cs_n" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_dm[0]" SITE "D16";
+IOBUF PORT "ddram_dm[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dm[0]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_dm[1]" SITE "G16";
+IOBUF PORT "ddram_dm[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dm[1]" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_dq[0]" SITE "C17";
+IOBUF PORT "ddram_dq[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[0]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[0]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[1]" SITE "D15";
+IOBUF PORT "ddram_dq[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[1]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[1]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[2]" SITE "B17";
+IOBUF PORT "ddram_dq[2]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[2]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[2]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[3]" SITE "C16";
+IOBUF PORT "ddram_dq[3]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[3]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[3]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[4]" SITE "A15";
+IOBUF PORT "ddram_dq[4]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[4]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[4]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[5]" SITE "B13";
+IOBUF PORT "ddram_dq[5]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[5]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[5]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[6]" SITE "A17";
+IOBUF PORT "ddram_dq[6]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[6]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[6]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[7]" SITE "A13";
+IOBUF PORT "ddram_dq[7]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[7]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[7]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[8]" SITE "F17";
+IOBUF PORT "ddram_dq[8]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[8]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[8]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[9]" SITE "F16";
+IOBUF PORT "ddram_dq[9]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[9]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[9]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[10]" SITE "G15";
+IOBUF PORT "ddram_dq[10]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[10]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[10]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[11]" SITE "F15";
+IOBUF PORT "ddram_dq[11]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[11]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[11]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[12]" SITE "J16";
+IOBUF PORT "ddram_dq[12]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[12]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[12]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[13]" SITE "C18";
+IOBUF PORT "ddram_dq[13]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[13]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[13]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[14]" SITE "H16";
+IOBUF PORT "ddram_dq[14]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[14]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[14]" TERMINATION=OFF;
+LOCATE COMP "ddram_dq[15]" SITE "F18";
+IOBUF PORT "ddram_dq[15]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dq[15]" IO_TYPE=SSTL135_I;
+IOBUF PORT "ddram_dq[15]" TERMINATION=OFF;
+LOCATE COMP "ddram_dqs_p[0]" SITE "B15";
+IOBUF PORT "ddram_dqs_p[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dqs_p[0]" IO_TYPE=SSTL135D_I;
+IOBUF PORT "ddram_dqs_p[0]" TERMINATION=OFF;
+IOBUF PORT "ddram_dqs_p[0]" DIFFRESISTOR=100;
+LOCATE COMP "ddram_dqs_p[1]" SITE "G18";
+IOBUF PORT "ddram_dqs_p[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_dqs_p[1]" IO_TYPE=SSTL135D_I;
+IOBUF PORT "ddram_dqs_p[1]" TERMINATION=OFF;
+IOBUF PORT "ddram_dqs_p[1]" DIFFRESISTOR=100;
+LOCATE COMP "ddram_clk_p" SITE "J18";
+IOBUF PORT "ddram_clk_p" SLEWRATE=FAST;
+IOBUF PORT "ddram_clk_p" IO_TYPE=SSTL135D_I;
+LOCATE COMP "ddram_cke" SITE "D18";
+IOBUF PORT "ddram_cke" SLEWRATE=FAST;
+IOBUF PORT "ddram_cke" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_odt" SITE "C13";
+IOBUF PORT "ddram_odt" SLEWRATE=FAST;
+IOBUF PORT "ddram_odt" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_reset_n" SITE "L18";
+IOBUF PORT "ddram_reset_n" SLEWRATE=FAST;
+IOBUF PORT "ddram_reset_n" IO_TYPE=SSTL135_I;
+LOCATE COMP "ddram_vccio[0]" SITE "K16";
+IOBUF PORT "ddram_vccio[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[0]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_vccio[1]" SITE "D17";
+IOBUF PORT "ddram_vccio[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[1]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_vccio[2]" SITE "K15";
+IOBUF PORT "ddram_vccio[2]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[2]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_vccio[3]" SITE "K17";
+IOBUF PORT "ddram_vccio[3]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[3]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_vccio[4]" SITE "B18";
+IOBUF PORT "ddram_vccio[4]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[4]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_vccio[5]" SITE "C6";
+IOBUF PORT "ddram_vccio[5]" SLEWRATE=FAST;
+IOBUF PORT "ddram_vccio[5]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_gnd[0]" SITE "L15";
+IOBUF PORT "ddram_gnd[0]" SLEWRATE=FAST;
+IOBUF PORT "ddram_gnd[0]" IO_TYPE=SSTL135_II;
+LOCATE COMP "ddram_gnd[1]" SITE "L16";
+IOBUF PORT "ddram_gnd[1]" SLEWRATE=FAST;
+IOBUF PORT "ddram_gnd[1]" IO_TYPE=SSTL135_II;
+LOCATE COMP "rgb_led0_r" SITE "K4";
+IOBUF PORT "rgb_led0_r" IO_TYPE=LVCMOS33;
+LOCATE COMP "rgb_led0_g" SITE "M3";
+IOBUF PORT "rgb_led0_g" IO_TYPE=LVCMOS33;
+LOCATE COMP "rgb_led0_b" SITE "J3";
+IOBUF PORT "rgb_led0_b" IO_TYPE=LVCMOS33;
+LOCATE COMP "gpio_0" SITE "N17";
+IOBUF PORT "gpio_0" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_0" PULLMODE=DOWN;
+LOCATE COMP "gpio_1" SITE "M18";
+IOBUF PORT "gpio_1" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_1" PULLMODE=DOWN;
+LOCATE COMP "gpio_5" SITE "B10";
+IOBUF PORT "gpio_5" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_5" PULLMODE=DOWN;
+LOCATE COMP "gpio_6" SITE "B9";
+IOBUF PORT "gpio_6" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_6" PULLMODE=DOWN;
+LOCATE COMP "gpio_9" SITE "C8";
+IOBUF PORT "gpio_9" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_9" PULLMODE=DOWN;
+LOCATE COMP "gpio_10" SITE "B8";
+IOBUF PORT "gpio_10" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_10" PULLMODE=DOWN;
+LOCATE COMP "gpio_11" SITE "A8";
+IOBUF PORT "gpio_11" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_11" PULLMODE=DOWN;
+LOCATE COMP "gpio_12" SITE "H2";
+IOBUF PORT "gpio_12" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_12" PULLMODE=DOWN;
+LOCATE COMP "gpio_13" SITE "J2";
+IOBUF PORT "gpio_13" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_13" PULLMODE=DOWN;
+LOCATE COMP "gpio_a0" SITE "L4";
+IOBUF PORT "gpio_a0" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_a0" PULLMODE=DOWN;
+LOCATE COMP "gpio_a1" SITE "N3";
+IOBUF PORT "gpio_a1" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_a1" PULLMODE=DOWN;
+LOCATE COMP "gpio_a2" SITE "N4";
+IOBUF PORT "gpio_a2" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_a2" PULLMODE=DOWN;
+LOCATE COMP "gpio_a3" SITE "H4";
+IOBUF PORT "gpio_a3" IO_TYPE=LVCMOS33;
+IOBUF PORT "gpio_a3" PULLMODE=DOWN;
+LOCATE COMP "usr_btn" SITE "J17";
+IOBUF PORT "usr_btn" IO_TYPE=SSTL135_I;
+LOCATE COMP "rst_n" SITE "V17";
+IOBUF PORT "rst_n" IO_TYPE=LVCMOS33;
+LOCATE COMP "spiflash4x_cs_n" SITE "U17";
+IOBUF PORT "spiflash4x_cs_n" IO_TYPE=LVCMOS33;
+LOCATE COMP "spiflash4x_dq[0]" SITE "U18";
+IOBUF PORT "spiflash4x_dq[0]" IO_TYPE=LVCMOS33;
+LOCATE COMP "spiflash4x_dq[1]" SITE "T18";
+IOBUF PORT "spiflash4x_dq[1]" IO_TYPE=LVCMOS33;
+LOCATE COMP "spiflash4x_dq[2]" SITE "R18";
+IOBUF PORT "spiflash4x_dq[2]" IO_TYPE=LVCMOS33;
+LOCATE COMP "spiflash4x_dq[3]" SITE "N18";
+IOBUF PORT "spiflash4x_dq[3]" IO_TYPE=LVCMOS33;
+LOCATE COMP "usb_d_p" SITE "N1";
+IOBUF PORT "usb_d_p" IO_TYPE=LVCMOS33;
+LOCATE COMP "usb_d_n" SITE "M2";
+IOBUF PORT "usb_d_n" IO_TYPE=LVCMOS33;
+LOCATE COMP "usb_pullup" SITE "N2";
+IOBUF PORT "usb_pullup" IO_TYPE=LVCMOS33;
diff --git a/verilog/alu/v2/tbalu.cpp b/verilog/alu/v2/tbalu.cpp
new file mode 100644
index 0000000..b3947f8
--- /dev/null
+++ b/verilog/alu/v2/tbalu.cpp
@@ -0,0 +1,45 @@
+#include <stdlib.h>
+#include <iostream>
+#include <verilated.h>
+#include <verilated_vcd_c.h>
+#include "Valu.h"
+#include "aluOp.h"
+#define OP SRA
+#define OPSTR "SRA"
+#define SIGN "SRA"
+#define LOWER -10
+#define UPPER 0
+
+vluint64_t sim_time = 0;
+
+int main(int argc, char** argv, char** env) {
+ Valu *dut = new Valu;
+
+ Verilated::traceEverOn(true);
+ VerilatedVcdC *m_trace = new VerilatedVcdC;
+ dut->trace(m_trace, 5);
+ m_trace->open("waveform.vcd");
+
+ dut->op = OP;
+ for (dut->in1 = LOWER; (int) dut->in1 < UPPER; dut->in1++) {
+ for (dut->in2 = 0; (int) dut->in2 < 10; dut->in2++) {
+ dut->eval();
+ std::cout << OPSTR << ": " << (int) dut->in1 << " " << SIGN << " " << (int) dut->in2 << " = " << (int) dut->out << "\n";
+ sim_time++;
+ m_trace->dump(sim_time);
+ }
+ }
+
+ for (dut->in1 = 1; (int) dut->in1 < 10; dut->in1++) {
+ for (dut->in2 = 0; (int) dut->in2 < 10; dut->in2++) {
+ dut->eval();
+ std::cout << OPSTR << ": " << dut->in1 << " " << SIGN << " " << dut->in2 << " = " << dut->out << "\n";
+ sim_time++;
+ m_trace->dump(sim_time);
+ }
+ }
+
+ m_trace->close();
+ delete dut;
+ exit(EXIT_SUCCESS);
+}