yosys/tests/arch/microchip/ram_TDP.ys

# ISC License
# 
# Copyright (C) 2024 Microchip Technology Inc. and its subsidiaries
# 
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
# 
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

read_verilog <<EOT
module ram_TDP (clka,clkb,wea,addra,dataina,qa,web,addrb,datainb,qb);
parameter addr_width = 10;
parameter data_width = 2;
input clka,clkb,wea,web;
input [data_width - 1 : 0] dataina,datainb;
input [addr_width - 1 : 0] addra,addrb;
output reg [data_width - 1 : 0] qa,qb;
reg [addr_width - 1 : 0] addra_reg, addrb_reg;
reg [data_width - 1 : 0] mem [(2**addr_width) - 1 : 0];

always @ (posedge clka)
begin
	addra_reg <= addra;
			
	if(wea) begin
		mem[addra] <= dataina;
		qa <= dataina;
	end else begin
		qa <= mem[addra];
	end
end

always @ (posedge clkb)
begin
	addrb_reg <= addrb;
	if(web) begin
		mem[addrb] <= datainb;
		qb <= datainb;
	end else begin
		qb <= mem[addrb];
	end
end
endmodule
EOT
synth_microchip -top ram_TDP -family polarfire -noiopad
select -assert-count 1 t:RAM1K20
select -assert-none t:RAM1K20 %% t:* %D

# similar to ram_TDP.v, but different write mode and read_enable=~write_enable
design -reset
read_verilog ../common/blockram.v
hierarchy -top sync_ram_tdp
chparam -set DATA_WIDTH 2 -set ADDRESS_WIDTH 10
synth_microchip -top sync_ram_tdp -family polarfire -noiopad
select -assert-count 1 t:RAM1K20
select -assert-count 2 t:CFG1
select -assert-none t:RAM1K20 t:CFG1 %% t:* %D