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olivier.gi |
/*===========================================================================*/
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/* Copyright (C) 2001 Authors */
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/* */
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/* This source file may be used and distributed without restriction provided */
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/* that this copyright statement is not removed from the file and that any */
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/* derivative work contains the original copyright notice and the associated */
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/* disclaimer. */
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/* */
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/* This source file is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU Lesser General Public License as published */
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/* by the Free Software Foundation; either version 2.1 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This source is distributed in the hope that it will be useful, but WITHOUT*/
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
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/* License for more details. */
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/* */
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/* You should have received a copy of the GNU Lesser General Public License */
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/* along with this source; if not, write to the Free Software Foundation, */
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
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/* */
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/*===========================================================================*/
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/* TWO-OPERAND ARITHMETIC: CMP[.B] INSTRUCTION */
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/*---------------------------------------------------------------------------*/
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/* Test the CMP[.B] instruction. */
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/*===========================================================================*/
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initial
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begin
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$display(" ===============================================");
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$display("| START SIMULATION |");
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$display(" ===============================================");
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repeat(5) @(posedge mclk);
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stimulus_done = 0;
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// CMP (WORD MODE)
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//--------------------------------------------------------
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@(r15==16'h1000);
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if (r5 !==16'h8888) tb_error("====== CMP without Carry =====");
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if (r6 !==16'h9999) tb_error("====== CMP with Carry =====");
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// CMP.B (BYTE MODE)
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//--------------------------------------------------------
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@(r15==16'h2000);
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if (r5 !==16'h8888) tb_error("====== CMP.B without Carry =====");
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if (r6 !==16'h9999) tb_error("====== CMP.B with Carry =====");
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// CMP (WORD MODE): Check Flags
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//--------------------------------------------------------
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@(r15==16'h3000);
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if (r2 !==16'h0004) tb_error("====== CMP FLAG: Flag check error: V=0, N=1, Z=0, C=0 =====");
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if (r5 !==16'h0666) tb_error("====== CMP FLAG: Result check error: V=0, N=1, Z=0, C=0 =====");
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@(r15==16'h3001);
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if (r2 !==16'h0001) tb_error("====== CMP FLAG: Flag check error: V=0, N=0, Z=0, C=1 =====");
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if (r5 !==16'h0555) tb_error("====== CMP FLAG: Result check error: V=0, N=0, Z=0, C=1 =====");
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@(r15==16'h3002);
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if (r2 !==16'h0003) tb_error("====== CMP FLAG: Flag check error: V=0, N=0, Z=1, C=1 =====");
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if (r5 !==16'h0333) tb_error("====== CMP FLAG: Result check error: V=0, N=0, Z=1, C=1 =====");
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@(r15==16'h3003);
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if (r2 !==16'h0104) tb_error("====== CMP FLAG: Flag check error: V=1, N=1, Z=0, C=0 =====");
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if (r5 !==16'h7ff0) tb_error("====== CMP FLAG: Result check error: V=1, N=1, Z=0, C=0 =====");
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@(r15==16'h3004);
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if (r2 !==16'h0101) tb_error("====== CMP FLAG: Flag check error: V=1, N=0, Z=0, C=1 =====");
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if (r5 !==16'h8000) tb_error("====== CMP FLAG: Result check error: V=1, N=0, Z=0, C=1 =====");
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// CMP.B (BYTE MODE): Check Flags
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//--------------------------------------------------------
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@(r15==16'h4000);
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if (r2 !==16'h0004) tb_error("====== CMP.B FLAG: Flag check error: V=0, N=1, Z=0, C=0 =====");
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if (r5 !==16'h5106) tb_error("====== CMP.B FLAG: Result check error: V=0, N=1, Z=0, C=0 =====");
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@(r15==16'h4001);
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if (r2 !==16'h0001) tb_error("====== CMP.B FLAG: Flag check error: V=0, N=0, Z=0, C=1 =====");
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if (r5 !==16'h5305) tb_error("====== CMP.B FLAG: Result check error: V=0, N=0, Z=0, C=1 =====");
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@(r15==16'h4002);
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if (r2 !==16'h0003) tb_error("====== CMP.B FLAG: Flag check error: V=0, N=0, Z=1, C=1 =====");
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if (r5 !==16'h8a03) tb_error("====== CMP.B FLAG: Result check error: V=0, N=0, Z=1, C=1 =====");
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@(r15==16'h4003);
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if (r2 !==16'h0104) tb_error("====== CMP.B FLAG: Flag check error: V=1, N=1, Z=0, C=0 =====");
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if (r5 !==16'h817f) tb_error("====== CMP.B FLAG: Result check error: V=1, N=1, Z=0, C=0 =====");
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@(r15==16'h4004);
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if (r2 !==16'h0101) tb_error("====== CMP.B FLAG: Flag check error: V=1, N=0, Z=0, C=1 =====");
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if (r5 !==16'h5480) tb_error("====== CMP.B FLAG: Result check error: V=1, N=0, Z=0, C=1 =====");
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stimulus_done = 1;
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end
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