luke
/
prjxray
mirror of https://github.com/openXC7/prjxray.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

bram minitest: show data coverage clearly 

Signed-off-by: John McMaster <johndmcmaster@gmail.com>
This commit is contained in:
John McMaster 2018-10-10 14:47:26 -07:00
parent f4d81a312d
commit 2838cad2e5
1 changed files with 22 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
minitests/bram_basic/top.v
View File

@ -5,6 +5,10 @@ ROM32X1: 32-Deep by 1-Wide ROM
ROM64X1: 64-Deep by 1-Wide ROM ROM64X1: 64-Deep by 1-Wide ROM
*/ */
`ifndef ROI
`define ROI
`endif
module top(input clk, stb, di, output do); module top(input clk, stb, di, output do);
localparam integer DIN_N = 256; localparam integer DIN_N = 256;
localparam integer DOUT_N = 256; localparam integer DOUT_N = 256;
@ -26,10 +30,16 @@ module top(input clk, stb, di, output do);
assign do = dout_shr[DOUT_N-1]; assign do = dout_shr[DOUT_N-1];
//`ROI
//sweep through these three values to see small config vs data changes //sweep through these three values to see small config vs data changes
//roi_bram0 //roi_bram0
//roi_bram1 //roi_bram1
roi_bram_inv //roi_bram_inv
//sweep through to see all data bits toggle to get idea of size
//roi_bram36_0s
roi_bram36_1s
roi ( roi (
.clk(clk), .clk(clk),
.din(din), .din(din),
@ -64,12 +74,7 @@ module roi_bram1(input clk, input [255:0] din, output [255:0] dout);
r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8])); r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8]));
endmodule endmodule
//too much churn to be useful to compare vs above //ram_RAMB36E1 too much churn to be useful to compare vs above
module roi_bram36(input clk, input [255:0] din, output [255:0] dout);
ram_RAMB36E1 #(.LOC("RAMB36_X0Y20"), .INIT0(1'b0), .INIT({256{1'b0}}))
r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8]));
endmodule
//instead lets change something more subtle //instead lets change something more subtle
// ERROR: [DRC REQP-1931] RAMB18E1_WEA_NO_CONNECT_OR_TIED_GND: roi/r0/ram programming // ERROR: [DRC REQP-1931] RAMB18E1_WEA_NO_CONNECT_OR_TIED_GND: roi/r0/ram programming
// per UG473 requires that for SDP mode the WEA bus must be unconnected or tied to GND. // per UG473 requires that for SDP mode the WEA bus must be unconnected or tied to GND.
@ -83,6 +88,16 @@ module roi_bram_inv(input clk, input [255:0] din, output [255:0] dout);
r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8])); r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8]));
endmodule endmodule
module roi_bram36_0s(input clk, input [255:0] din, output [255:0] dout);
ram_RAMB36E1 #(.LOC("RAMB36_X0Y20"), .INIT0({256{1'b0}}), .INIT({256{1'b0}}))
r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8]));
endmodule
module roi_bram36_1s(input clk, input [255:0] din, output [255:0] dout);
ram_RAMB36E1 #(.LOC("RAMB36_X0Y20"), .INIT0({256{1'b1}}), .INIT({256{1'b1}}))
r0(.clk(clk), .din(din[ 0 +: 8]), .dout(dout[ 0 +: 8]));
endmodule
/* /*
One BRAM per tile One BRAM per tile
*/ */