61 lines
1.8 KiB
Systemverilog
61 lines
1.8 KiB
Systemverilog
// DESCRIPTION: Verilator: Verilog Test module
|
|
//
|
|
// This file ONLY is placed under the Creative Commons Public Domain.
|
|
// SPDX-FileCopyrightText: 2020 Wilson Snyder
|
|
// SPDX-License-Identifier: CC0-1.0
|
|
|
|
// verilog_format: off
|
|
`define stop $stop
|
|
`define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0)
|
|
// verilog_format: on
|
|
|
|
module t;
|
|
|
|
parameter int sliceddn[4:-3] = '{'h100, 'h101, 'h102, 'h103, 'h104, 'h105, 'h106, 'h107};
|
|
parameter int slicedup[-3:4] = '{'h100, 'h101, 'h102, 'h103, 'h104, 'h105, 'h106, 'h107};
|
|
int alldn[7:0];
|
|
int allup[0:7];
|
|
int twodn[1:0];
|
|
int twoup[0:1];
|
|
|
|
initial begin
|
|
`checkh(sliceddn[4], 'h100);
|
|
alldn[7:0] = sliceddn[4:-3];
|
|
`checkh(alldn[7], 'h100);
|
|
alldn[7:0] = sliceddn[-3+:8]; // down: lsb/lo +: width
|
|
`checkh(alldn[7], 'h100);
|
|
alldn[7:0] = sliceddn[4-:8]; // down: msb/hi -: width
|
|
`checkh(alldn[7], 'h100);
|
|
twodn[1:0] = sliceddn[3:2];
|
|
`checkh(twodn[1], 'h101);
|
|
`checkh(twodn[0], 'h102);
|
|
twodn[1:0] = sliceddn[1+:2];
|
|
`checkh(twodn[1], 'h102);
|
|
`checkh(twodn[0], 'h103);
|
|
twodn[1:0] = sliceddn[1-:2];
|
|
`checkh(twodn[1], 'h103);
|
|
`checkh(twodn[0], 'h104);
|
|
|
|
`checkh(slicedup[4], 'h107);
|
|
allup[0:7] = slicedup[-3:4];
|
|
`checkh(alldn[7], 'h100);
|
|
allup[0:7] = slicedup[-3+:8]; // up: msb/lo +: width
|
|
`checkh(alldn[7], 'h100);
|
|
allup[0:7] = slicedup[4-:8]; // up: lsb/hi -: width
|
|
`checkh(alldn[7], 'h100);
|
|
twoup[0:1] = slicedup[2:3];
|
|
`checkh(twoup[1], 'h106);
|
|
`checkh(twoup[0], 'h105);
|
|
twoup[0:1] = slicedup[1+:2];
|
|
`checkh(twoup[1], 'h105);
|
|
`checkh(twoup[0], 'h104);
|
|
twoup[0:1] = slicedup[1-:2];
|
|
`checkh(twoup[1], 'h104);
|
|
`checkh(twoup[0], 'h103);
|
|
|
|
$write("*-* All Finished *-*\n");
|
|
$finish;
|
|
end
|
|
|
|
endmodule
|