Subversion Repositories openmsp430

/*===========================================================================*/
/* Copyright (C) 2001 Authors                                                */
/*                                                                           */
/* This source file may be used and distributed without restriction provided */
/* that this copyright statement is not removed from the file and that any   */
/* derivative work contains the original copyright notice and the associated */
/* disclaimer.                                                               */
/*                                                                           */
/* This source file is free software; you can redistribute it and/or modify  */
/* it under the terms of the GNU Lesser General Public License as published  */
/* by the Free Software Foundation; either version 2.1 of the License, or    */
/* (at your option) any later version.                                       */
/*                                                                           */
/* This source is distributed in the hope that it will be useful, but WITHOUT*/
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public       */
/* License for more details.                                                 */
/*                                                                           */
/* You should have received a copy of the GNU Lesser General Public License  */
/* along with this source; if not, write to the Free Software Foundation,    */
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA        */
/*                                                                           */
/*===========================================================================*/
/*                 TWO-OPERAND ARITHMETIC: ADD INSTRUCTION                   */
/*---------------------------------------------------------------------------*/
/* Test the ADD instruction with all addressing modes                        */
/*                                                                           */
/* Author(s):                                                                */
/*             - Olivier Girard,    olgirard@gmail.com                       */
/*                                                                           */
/*---------------------------------------------------------------------------*/
/* $Rev: 134 $                                                                */
/* $LastChangedBy: olivier.girard $                                          */
/* $LastChangedDate: 2012-03-22 21:31:06 +0100 (Thu, 22 Mar 2012) $          */
/*===========================================================================*/

.set    DMEM_BASE, (__data_start     )
.set    DMEM_200,  (__data_start+0x00)
.set    DMEM_202,  (__data_start+0x02)
.set    DMEM_204,  (__data_start+0x04)
.set    DMEM_206,  (__data_start+0x06)
.set    DMEM_208,  (__data_start+0x08)
.set    DMEM_20A,  (__data_start+0x0A)
.set    DMEM_20C,  (__data_start+0x0C)
.set    DMEM_20E,  (__data_start+0x0E)
.set    DMEM_210,  (__data_start+0x10)
.set    DMEM_212,  (__data_start+0x12)
.set    DMEM_214,  (__data_start+0x14)
.set    DMEM_216,  (__data_start+0x16)
.set    DMEM_218,  (__data_start+0x18)
.set    DMEM_21A,  (__data_start+0x1A)
.set    DMEM_21C,  (__data_start+0x1C)
.set    DMEM_21E,  (__data_start+0x1E)
.set    DMEM_220,  (__data_start+0x20)
.set    DMEM_222,  (__data_start+0x22)
.set    DMEM_224,  (__data_start+0x24)
.set    DMEM_226,  (__data_start+0x26)
.set    DMEM_228,  (__data_start+0x28)
.set    DMEM_22A,  (__data_start+0x2A)
.set    DMEM_22C,  (__data_start+0x2C)
.set    DMEM_22E,  (__data_start+0x2E)
.set    DMEM_230,  (__data_start+0x30)
.set    DMEM_232,  (__data_start+0x32)
.set    DMEM_234,  (__data_start+0x34)
.set    DMEM_236,  (__data_start+0x36)
.set    DMEM_238,  (__data_start+0x38)
.set    DMEM_23A,  (__data_start+0x3A)
.set    DMEM_23C,  (__data_start+0x3C)
.set    DMEM_23E,  (__data_start+0x3E)
.set    DMEM_240,  (__data_start+0x40)
.set    DMEM_250,  (__data_start+0x50)
.set    DMEM_252,  (__data_start+0x52)
.set    DMEM_254,  (__data_start+0x54)
.set    DMEM_256,  (__data_start+0x56)
.set    DMEM_258,  (__data_start+0x58)
.set    DMEM_25A,  (__data_start+0x5A)
.set    DMEM_25C,  (__data_start+0x5C)
.set    DMEM_25D,  (__data_start+0x5D)
.set    DMEM_25E,  (__data_start+0x5E)
.set    DMEM_25F,  (__data_start+0x5F)
.set    DMEM_260,  (__data_start+0x60)
.set    DMEM_261,  (__data_start+0x61)
.set    DMEM_262,  (__data_start+0x62)
.set    DMEM_263,  (__data_start+0x63)
.set    DMEM_264,  (__data_start+0x64)
.set    DMEM_265,  (__data_start+0x65)
.set    DMEM_266,  (__data_start+0x66)
.set    DMEM_267,  (__data_start+0x67)

.global main

main:
        /* ---------------------- INITIALIZE REGISTERS --------------------- */
        mov     #0x2202, r2
        mov     #0x3333, r3
        mov     #0x4444, r4
        mov     #0x5555, r5
        mov     #0x6666, r6
        mov     #0x7777, r7
        mov     #0x8888, r8
        mov     #0x9999, r9
        mov     #0xaaaa, r10
        mov     #0xbbbb, r11
        mov     #0xcccc, r12
        mov     #0xdddd, r13
        mov     #0xeeee, r14

        mov     #0x1000, r15


        /* ---------------------- TEST WHEN SOURCE IS Rn ------------------- */
.set   Rn_EDE,  DMEM_212
.set   Rn_TONY, DMEM_214

        mov     #0x4444, r4
        mov     #0x5555, r5
        add          r4, r5        ;# Add r4+r5 (0x4444+0x5555=0x9999)

        mov     #0x000a, r4
        add          r4, r0
        nop
        nop
        nop
        mov     #0x1234, r4        ;# Make sure the jump is taken
test_Rn_PC:

        mov     #0x2222, &DMEM_210
        mov   #DMEM_200, r6
        mov     #0x3333, r7
        add          r7, 16(r6)    ;# Write 0x2222+0x3333=0x5555 to memory @0x0210

        mov     #0x4444, &DMEM_212
        mov     #0x5678, r7
        add          r7, Rn_EDE    ;# Write 0x4444+0x5678=0x9abc to memory @0x0212

        mov     #0x5555, &DMEM_214
        mov     #0x1234, r8
        add          r8, &Rn_TONY  ;# Write 0x5555+0x1234=0x6789 to memory @0x0214

        mov     #0x2000, r15


        /* ---------------------- TEST WHEN SOURCE IS @Rn ------------------ */
.set   aRn_EDE,  DMEM_212
.set   aRn_TONY, DMEM_214

        mov   #DMEM_200, r4
        mov     #0x1111, &DMEM_200
        mov     #0x6666, r5
        add         @r4, r5        ;# Add @r4+r5 (0x1111+0x6666=0x7777)

        mov   #DMEM_200, r4
        mov     #0x000a, &DMEM_200
        add         @r4, r0
        nop
        nop
        nop
        mov     #0x1234, r4        ;# Make sure the jump is taken
test_aRn_PC:

        mov     #0x1234, &DMEM_20E
        mov     #0x5432, &DMEM_210
        mov   #DMEM_200, r6
        mov   #DMEM_20E, r7
        add         @r7, 16(r6)    ;# Write 0x1234+0x5432=0x6666 to memory @0x0210

        mov     #0x5f12, &DMEM_200
        mov     #0x8e1c, &DMEM_212
        mov   #DMEM_200, r7
        add         @r7, aRn_EDE    ;# Write 0x5f12+0x8e1c=0xed2e to memory @0x0212

        mov     #0x3112, &DMEM_202
        mov     #0x1541, &DMEM_214
        mov   #DMEM_202, r8
        add         @r8, &aRn_TONY  ;# Write 0x3112+0x1541=0x4653 to memory @0x0214

        mov     #0x3000, r15



        /* ---------------------- TEST WHEN SOURCE IS @Rn+ ----------------- */
.set   aRni_EDE,  DMEM_212
.set   aRni_TONY, DMEM_214

        mov   #DMEM_200, r4
        mov     #0x2222, &DMEM_200
        mov     #0x8888, r5
        add        @r4+, r5         ;# Add @r4+r5 (0x2222+0x8888=0xaaaa)

        mov   #DMEM_204, r6
        mov     #0x000a, &DMEM_204
        add        @r6+, r0
        nop
        nop
        nop
        mov     #0x1234, r6         ;# Make sure the jump is taken
test_aRni_PC:

        mov     #0x1234, &DMEM_20E
        mov     #0x5432, &DMEM_210
        mov   #DMEM_200, r8
        mov   #DMEM_20E, r7
        add        @r7+, 16(r8)     ;# Write 0x1234+0x5432=0x6666 to memory @0x0210

        mov     #0x5f12, &DMEM_206
        mov     #0x8e1c, &DMEM_212
        mov   #DMEM_206, r8
        add        @r8+, aRni_EDE   ;# Write 0x5f12+0x8e1c=0xed2e to memory @0x0212

        mov     #0x3112, &DMEM_202
        mov     #0x1541, &DMEM_214
        mov   #DMEM_202, r9
        add        @r9+, &aRni_TONY ;# Write 0x3112+0x1541=0x4653 to memory @0x0214

        mov      #0x4000, r15



        /* ---------------------- TEST WHEN SOURCE IS #N ------------------- */
.set   N_EDE,  DMEM_210
.set   N_TONY, DMEM_206

        mov      #0x3210, r4
        add      #0x1234, r4         ;# Write 0x3210+0x1234=0x4444 to R4

        mov      #0x0000, r5
        add      #0x000a, r0
        nop
        nop
        nop
        mov      #0x1234, r5         ;# Make sure the jump is taken
test_N_PC:

        mov      #0x5432, &DMEM_230
        mov    #DMEM_200, r6
        add      #0x5a5a, 48(r6)     ;# Write 0x5432+0x5a5a=0xae8c to memory @0x0230

        mov      #0x4325, &DMEM_210
        add      #0x1a2b, N_EDE      ;# Write 0x4325+0x1a2b=0x5d50 to memory @0x0210

        mov      #0x3254, &DMEM_206
        add      #0x3c4d, &N_TONY    ;# Write 0x3254+0x3c4d=0x6ea1 to memory @0x0206

        mov      #0x5000, r15


        /* ---------------------- TEST WHEN SOURCE IS x(Rn) ---------------- */
.set   xRn_EDE,  DMEM_220
.set   xRn_TONY, DMEM_208

        mov      #0x8347, &DMEM_210
        mov      #0x1234, r5
        mov    #DMEM_200, r4
        add       16(r4), r5         ;# Write 0x8347+0x1234=0x957b to R5

        mov      #0x000a, &DMEM_208
        mov    #DMEM_200, r4
        mov      #0x1234, r6
        add        8(r4), r0
        nop
        nop
        nop
        nop
        mov      #0x0000, r6         ;# Make sure the jump is taken
test_xRn_PC:

        mov      #0x4241, &DMEM_210
        mov      #0x1535, &DMEM_214
        mov    #DMEM_200, r7
        mov    #DMEM_202, r8
        add       16(r7), 18(r8)     ;# Write 0x4241+0x1535=0x5776 to memory @0x214

        mov      #0x7238, &DMEM_204
        mov      #0x2143, &DMEM_220
        mov    #DMEM_200, r7
        add        4(r7), xRn_EDE    ;# Write 0x7238+0x2143=0x937b to memory @0x220

        mov      #0x98b2, &DMEM_216
        mov      #0x1432, &DMEM_208
        mov    #DMEM_200, r7
        add       22(r4), &xRn_TONY  ;# Write 0x0x98b2+0x1432=0xace4 to memory @0x208

        mov      #0x6000, r15


        /* ---------------------- TEST WHEN SOURCE IS 'EDE' ---------------- */
.set   EDE_EDE,  DMEM_216
.set   EDE_TONY, DMEM_212

.set   EDE_200,  DMEM_200
.set   EDE_202,  DMEM_202
.set   EDE_204,  DMEM_204
.set   EDE_206,  DMEM_206
.set   EDE_208,  DMEM_208

        mov      #0xc3d6, &DMEM_200
        mov      #0x1234, &DMEM_204
        mov      #0x4321, r4
        add      EDE_200, r4          ;# Write 0xc3d6+0x4321=0x06f7 to R4

        mov      #0x000a, &DMEM_202
        mov      #0x1234, &DMEM_204
        mov      #0x3456, r6
        add      EDE_202, r0
        nop
        nop
        nop
        nop
        mov      #0x0000, r6          ;# Make sure the jump is taken
test_EDE_PC:

        mov    #DMEM_202, r8
        mov      #0xf712, &DMEM_204
        mov      #0x1234, &DMEM_214
        mov      #0x0000, &DMEM_208
        add      EDE_204, 18(r8)      ;# Write 0xf712+0x1234=0x0946 to memory @0x214

        mov      #0xb3a9, &DMEM_206
        mov      #0x058a, &DMEM_216
        mov      #0x1234, &DMEM_208
        add      EDE_206, EDE_EDE     ;# Write 0xb3a9+0x058a=0xb933 to memory @0x216

        mov      #0x837A, &DMEM_208
        mov      #0xA738, &DMEM_212
        mov      #0x1234, &DMEM_20A
        add      EDE_208, &EDE_TONY   ;# Write 0x837A+0xA738=0x2ab2 to memory @0x212

        mov      #0x7000, r15



        /* ---------------------- TEST WHEN SOURCE IS '&EDE' --------------- */
.set   aEDE_EDE,  DMEM_218
.set   aEDE_TONY, DMEM_202

        mov      #0x23d4, &DMEM_200
        mov      #0x1234, &DMEM_202
        mov      #0x4321, r4
        add    &DMEM_200, r4          ;# Write 0x23d4+0x4321=0x66f5 to R4

        mov      #0x000a, &DMEM_202
        mov      #0x1234, &DMEM_204
        mov      #0x3456, r6
        add    &DMEM_202, r0
        nop
        nop
        nop
        nop
        mov      #0x0000, r6          ;# Make sure the jump is taken
test_aEDE_PC:

        mov    #DMEM_202, r7
        mov      #0x481c, &DMEM_204
        mov      #0x3ab5, &DMEM_214
        mov      #0x1234, &DMEM_206
        add    &DMEM_204, 18(r7)      ;# Write 0x481c+0x3ab5=0x82d1 to memory @0x214

        mov      #0x5c1f, &DMEM_206
        mov      #0x6e2f, &DMEM_218
        mov      #0x1234, &DMEM_208
        add    &DMEM_206, aEDE_EDE    ;# Write 0x5c1f+0x6e2f=0xca4e to memory @0x218

        mov      #0xc16e, &DMEM_208
        mov      #0x51ca, &DMEM_202
        mov      #0x1234, &DMEM_20A
        add    &DMEM_208, &aEDE_TONY  ;# Write 0xc16e+0x51ca=0x1338 to memory @0x202

        mov      #0x8000, r15


        /* ---------------------- TEST WHEN SOURCE IS CONSTANT ------------- */
.set   CONST_EDE0,   DMEM_220
.set   CONST_EDE1,   DMEM_222
.set   CONST_EDE2,   DMEM_224
.set   CONST_EDE4,   DMEM_226
.set   CONST_EDE8,   DMEM_228
.set   CONST_EDEm1,  DMEM_22A

.set   CONST_TONY0,  DMEM_230
.set   CONST_TONY1,  DMEM_232
.set   CONST_TONY2,  DMEM_234
.set   CONST_TONY4,  DMEM_236
.set   CONST_TONY8,  DMEM_238
.set   CONST_TONYm1, DMEM_23A


        mov      #0x4444, r4              ;# Initialize registers
        mov      #0x5555, r5
        mov      #0x6666, r6
        mov      #0x7777, r7
        mov      #0x8888, r8
        mov      #0x9999, r9
        add      #0x0000, r4              ;# Write 0x4444+0 to R4
        add      #0x0001, r5              ;# Write 0x5555+1 to R5
        add      #0x0002, r6              ;# Write 0x6666+2 to R6
        add      #0x0004, r7              ;# Write 0x7777+4 to R7
        add      #0x0008, r8              ;# Write 0x8888+8 to R8
        add      #0xffff, r9              ;# Write 0x9999-1 to R9

        mov      #0x1234, r11
        add      #0x0004, r0
        clr      r11
        clr      r11
        jmp      end_const_r0
        clr      r11
        clr      r11
end_const_r0:

        mov    #DMEM_202, r10
        mov      #0x4444, &DMEM_210       ;# Initialize Memory
        mov      #0x5555, &DMEM_212
        mov      #0x6666, &DMEM_214
        mov      #0x7777, &DMEM_216
        mov      #0x8888, &DMEM_218
        mov      #0x9999, &DMEM_21A
        add      #0x0000, 14(r10)         ;# Move 0x4444+0 to memory @0x210
        add      #0x0001, 16(r10)         ;# Move 0x5555+1 to memory @0x212
        add      #0x0002, 18(r10)         ;# Move 0x6666+2 to memory @0x214
        add      #0x0004, 20(r10)         ;# Move 0x7777+4 to memory @0x216
        add      #0x0008, 22(r10)         ;# Move 0x8888+8 to memory @0x218
        add      #0xffff, 24(r10)         ;# Move 0x9999-1 to memory @0x21A


        mov      #0x4444, &DMEM_220       ;# Initialize Memory
        mov      #0x5555, &DMEM_222
        mov      #0x6666, &DMEM_224
        mov      #0x7777, &DMEM_226
        mov      #0x8888, &DMEM_228
        mov      #0x9999, &DMEM_22A
        add      #0x0000, CONST_EDE0      ;# Move 0x4444+0 to memory @0x220
        add      #0x0001, CONST_EDE1      ;# Move 0x5555+1 to memory @0x222
        add      #0x0002, CONST_EDE2      ;# Move 0x6666+2 to memory @0x224
        add      #0x0004, CONST_EDE4      ;# Move 0x7777+4 to memory @0x226
        add      #0x0008, CONST_EDE8      ;# Move 0x8888+8 to memory @0x228
        add      #0xffff, CONST_EDEm1     ;# Move 0x9999-1 to memory @0x22A

        mov      #0x4444, &DMEM_230       ;# Initialize Memory
        mov      #0x5555, &DMEM_232
        mov      #0x6666, &DMEM_234
        mov      #0x7777, &DMEM_236
        mov      #0x8888, &DMEM_238
        mov      #0x9999, &DMEM_23A
        add      #0x0000, &CONST_TONY0    ;# Move 0x4444+0 to memory @0x230
        add      #0x0001, &CONST_TONY1    ;# Move 0x5555+1 to memory @0x232
        add      #0x0002, &CONST_TONY2    ;# Move 0x6666+2 to memory @0x234
        add      #0x0004, &CONST_TONY4    ;# Move 0x7777+4 to memory @0x236
        add      #0x0008, &CONST_TONY8    ;# Move 0x8888+8 to memory @0x238
        add      #0xffff, &CONST_TONYm1   ;# Move 0x9999-1 to memory @0x23A

        mov      #0x9000, r15


        /* ------------------------------ TEST FLAGS ---------------------- */

        mov     #0x0000, r2        ;# V=0, N=0, Z=0, C=0
        mov     #0x0444, r4        ;#
        mov     #0x0555, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0x0444+0x0555=0x0999)
        mov     #0xA000, r15

        mov     #0x0000, r2        ;# V=0, N=0, Z=0, C=1
        mov     #0x0011, r4        ;#
        mov     #0xfff0, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0xfff0+0x0011=0x0001)
        mov     #0xA001, r15

        mov     #0x0000, r2        ;# V=0, N=0, Z=1, C=0
        mov     #0x0000, r4        ;#
        mov     #0x0000, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0x0000+0x0000=0x0000)
        mov     #0xA002, r15

        mov     #0x0000, r2        ;# V=0, N=1, Z=0, C=0
        mov     #0xff00, r4        ;#
        mov     #0x0010, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0xff00+0x0010=0xff10)
        mov     #0xA003, r15

        mov     #0x0000, r2        ;# V=1, N=1, Z=0, C=0
        mov     #0x7fff, r4        ;#
        mov     #0x0010, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0x7fff+0x0010=0x800f)
        mov     #0xA004, r15

        mov     #0x0000, r2        ;# V=1, N=0, Z=0, C=1
        mov     #0xff00, r4        ;#
        mov     #0x8000, r5        ;#
        add          r4, r5        ;# Add r4+r5 (0xff00+0x8000=0x7f00)
        mov     #0xA005, r15

        /* ---------------- TEST WHEN SOURCE IS CONSTANT IN BYTE MODE ------ */
        #
        # NOTE: The following section would not fit in the smallest ROM
        #       configuration for the "two-op_add-b.s43" pattern.
        #       It is therefore executed here.
        #
.set   CONSTL_TONY0,  DMEM_250
.set   CONSTL_TONY1,  DMEM_252
.set   CONSTL_TONY2,  DMEM_254
.set   CONSTL_TONY4,  DMEM_256
.set   CONSTL_TONY8,  DMEM_258
.set   CONSTL_TONYm1, DMEM_25A
.set   CONSTH_TONY0,  DMEM_25D
.set   CONSTH_TONY1,  DMEM_25F
.set   CONSTH_TONY2,  DMEM_261
.set   CONSTH_TONY4,  DMEM_263
.set   CONSTH_TONY8,  DMEM_265
.set   CONSTH_TONYm1, DMEM_267

        mov      #0xaa44, &DMEM_250        ;# Initialize Memory
        mov      #0xaa55, &DMEM_252
        mov      #0xaa66, &DMEM_254
        mov      #0xaa77, &DMEM_256
        mov      #0xaa35, &DMEM_258
        mov      #0xaa99, &DMEM_25A
        mov      #0xaa55, &DMEM_25C
        mov      #0xbb55, &DMEM_25E
        mov      #0xcc55, &DMEM_260
        mov      #0xdd55, &DMEM_262
        mov      #0xee55, &DMEM_264
        mov      #0x3355, &DMEM_266

        add.b    #0x0000, &CONSTL_TONY0    ;# Move +0 to memory @0x250
        add.b    #0x0001, &CONSTL_TONY1    ;# Move +1 to memory @0x252
        add.b    #0x0002, &CONSTL_TONY2    ;# Move +2 to memory @0x254
        add.b    #0x0004, &CONSTL_TONY4    ;# Move +4 to memory @0x256
        add.b    #0x0008, &CONSTL_TONY8    ;# Move +8 to memory @0x258
        add.b    #0xffff, &CONSTL_TONYm1   ;# Move -1 to memory @0x25A
        add.b    #0x0000, &CONSTH_TONY0    ;# Move +0 to memory @0x25D
        add.b    #0x0001, &CONSTH_TONY1    ;# Move +1 to memory @0x25F
        add.b    #0x0002, &CONSTH_TONY2    ;# Move +2 to memory @0x261
        add.b    #0x0004, &CONSTH_TONY4    ;# Move +4 to memory @0x263
        add.b    #0x0008, &CONSTH_TONY8    ;# Move +8 to memory @0x265
        add.b    #0xffff, &CONSTH_TONYm1   ;# Move -1 to memory @0x267

        mov      #0xB000, r15


        /* ------------------ TEST FLAGS IN BYTE MODE --------------------- */

        mov     #0x0000, r2        ;# V=0, N=0, Z=0, C=0
        mov     #0xaa04, r4        ;#
        mov     #0x6605, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0xaa04+0x6605=0x0009)
        mov     #0xC000, r15

        mov     #0x0000, r2        ;# V=0, N=0, Z=0, C=1
        mov     #0xaa11, r4        ;#
        mov     #0x66f0, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0x0011+0x00f0=0x0001)
        mov     #0xC001, r15

        mov     #0x0000, r2        ;# V=0, N=0, Z=1, C=0
        mov     #0xaa00, r4        ;#
        mov     #0x6600, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0x0000+0x0000=0x0000)
        mov     #0xC002, r15

        mov     #0x0000, r2        ;# V=0, N=1, Z=0, C=0
        mov     #0xaaf0, r4        ;#
        mov     #0x6603, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0x00f0+0x0003=0x00f3)
        mov     #0xC003, r15

        mov     #0x0000, r2        ;# V=1, N=1, Z=0, C=0
        mov     #0x007f, r4        ;#
        mov     #0x0010, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0x007f+0x0010=0x008f)
        mov     #0xC004, r15

        mov     #0x0000, r2        ;# V=1, N=0, Z=0, C=1
        mov     #0x00ff, r4        ;#
        mov     #0x0080, r5        ;#
        add.b        r4, r5        ;# Add r4+r5 (0x00ff+0x0080=0x007f)
        mov     #0xC005, r15



        /* ----------------------         END OF TEST        --------------- */
        mov      #0xD000, r15
end_of_test:
        nop
        br #0xffff


        /* ----------------------         INTERRUPT VECTORS  --------------- */

.section .vectors, "a"
.word end_of_test  ; Interrupt  0 (lowest priority)    <unused>
.word end_of_test  ; Interrupt  1                      <unused>
.word end_of_test  ; Interrupt  2                      <unused>
.word end_of_test  ; Interrupt  3                      <unused>
.word end_of_test  ; Interrupt  4                      <unused>
.word end_of_test  ; Interrupt  5                      <unused>
.word end_of_test  ; Interrupt  6                      <unused>
.word end_of_test  ; Interrupt  7                      <unused>
.word end_of_test  ; Interrupt  8                      <unused>
.word end_of_test  ; Interrupt  9                      <unused>
.word end_of_test  ; Interrupt 10                      Watchdog timer
.word end_of_test  ; Interrupt 11                      <unused>
.word end_of_test  ; Interrupt 12                      <unused>
.word end_of_test  ; Interrupt 13                      <unused>
.word end_of_test  ; Interrupt 14                      NMI
.word main         ; Interrupt 15 (highest priority)   RESET