Emulator Cheats

Memory altering cheats for emulators
http://www.mamecheat.co.uk/forums/

[galaga] Galaga

http://www.mamecheat.co.uk/forums/viewtopic.php?t=12885

Page 1 of 1

[galaga] Galaga

Posted: Wed Dec 30, 2020 2:39 pm
by jman

Code: Select all

<cheat desc="auto fire">
    <script state="on">
        <action>maincpu.mb@1f17 = 6e</action>
    </script>
    <script state="off">
        <action>maincpu.mb@1f17 = 66</action>
    </script>
</cheat>

<cheat desc="player speed">
    <parameter min="0x01" max="0x05" step="0x01" />
    <script state="change">
        <action>maincpu.mb@1fb0 = param</action>
    </script>
    <script state="off">
        <action>maincpu.mb@1fb0 = 01</action>
    </script>
</cheat>

<cheat desc="bullet speed">
    <parameter>
        <item value="0x01">01 (slow)</item>
        <item value="0x06">02       </item>
        <item value="0x0c">03       </item>
        <item value="0x12">04       </item>
        <item value="0x18">05 (fast)</item>
    </parameter>
    <script state="change">
        <action>sub.mb@70d =      param</action> <!-- speed -->
        <action>sub.mb@78b = 06 + param</action> <!-- collision range -->
    </script>
    <script state="off">
        <action>sub.mb@70d = 06</action>
        <action>sub.mb@78b = 06</action>
    </script>
</cheat>

<cheat desc="skip ram/rom check">
    <script state="on">
        <!-- ram -->
        <action>maincpu.md@337f = 063435c3</action>
        <action>maincpu.mb@3489 =       c9</action>
        <!-- roms -->
        <action>maincpu.mb@352b =       c9</action>
        <action>    sub.md@0583 = 0e183daf</action>
        <!--
        0583 | af    : xor a
        0584 | 3d    : dec a
        0585 | 18 0e : jr  $0595
        -->
        <action>   sub2.md@0091 = 0e183daf</action>
        <!--
        0096 | af    : xor a
        0097 | 3d    : dec a
        0098 | 18 0e : jr  $00a3
        -->
    </script>
    <script state="off">
        <action>maincpu.md@337f = 06683032</action>
        <action>maincpu.mb@3489 =       06</action>
        <action>maincpu.mb@352b =       e5</action>
        <action>    sub.md@0583 = 10016f67</action>
        <action>   sub2.md@0091 = 10016f67</action>
    </script>
</cheat>

[galaga]+ Galaga

Posted: Sun Sep 29, 2024 1:54 am
by jman
galaga.xml

Code: Select all

<!-- Galaga (Namco rev. B) -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F17 = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F17 = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FB0 = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FB0 = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3723 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A46CDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 46 3A : call $3A46
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3723 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@337F = 063435C3</action>
            <action>maincpu.mb@348E = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@352B = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@0091 = 0E183DAF</action> <!-- xor a / dec a / jr $00A3 -->
        </script>
        <script state="off">
            <action>maincpu.md@337F = 06683032</action>
            <action>maincpu.mb@348E = C5      </action>
            <action>maincpu.mb@352B = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@0091 = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
galagao.xml

Code: Select all

<!-- Galaga (Namco) -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F0D = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F0D = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FA6 = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FA6 = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 06342BC3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@007F = 0E183DAF</action> <!-- xor a / dec a / jr $0091 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@007F = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
galagamw.xml

Code: Select all

<!-- Galaga (Midway set 1) -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F13 = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F13 = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FAC = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FAC = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 063435C3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@0087 = 0E183DAF</action> <!-- xor a / dec a / jr $0099 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@0087 = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
galagamk.xml

Code: Select all

<!-- Galaga (Midway set 2) -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F17 = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F17 = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FB0 = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FB0 = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 063435C3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@0091 = 0E183DAF</action> <!-- xor a / dec a / jr $00A3 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@0091 = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
galagamf.xml

Code: Select all

<!-- Galaga (Midway set 1) -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F13 = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F13 = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FAC = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FAC = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 0D</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 063435C3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@0087 = 0E183DAF</action> <!-- xor a / dec a / jr $0099 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@0087 = 10016F67</action>
        </script>
    </cheat>

</mamecheat>

[galaga]+ Galaga

Posted: Sun Sep 29, 2024 1:55 am
by jman
gallag.xml

Code: Select all

<!-- Gallag -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F0D = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F0D = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FA6 = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FA6 = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x16 -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 063435C3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@007F = 0E183DAF</action> <!-- xor a / dec a / jr $0091 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@007F = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
gatsbee.xml

Code: Select all

<!-- Gatsbee -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1933 = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1933 = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@19CC = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@19CC = 02</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x19 -->
        <!-- explosion sound is played at boot -->
        <!-- you can't stop explosion sound (0x19) by sound stop button -->
        <comment>reset the game (F3) to enter sound test mode</comment>
        <script state="on">
            <action>maincpu.mw@2B98 = 3418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363040CD        </action>
            <action>maincpu.mq@3040 = E62F99B53A910021</action>
            <action>maincpu.mq@3048 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3050 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3058 = FE34012002FE3501</action>
            <action>maincpu.mq@3060 = FE0618F03E042080</action>
            <action>maincpu.mq@3068 = 787786103E052020</action>
            <action>maincpu.mq@3070 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3078 = 2004FE7801366F85</action>
            <action>maincpu.mq@3080 = B818C12D66CDC505</action>
            <!--
            3040 | 21 00 91 : ld   hl,$9100  // sound code address
            3043 | 3A B5 99 : ld   a,($99B5) // read buttons
            3046 | 2F       : cpl
            3047 | E6 05    : and  $05
            3049 | 4F       : ld   c,a
            304A | 3A B6 99 : ld   a,($99B6) // read joysticks
            304D | 2F       : cpl
            304E | E6 AA    : and  $AA
            3050 | B1       : or   c
            3051 | B8       : cp   b
            3052 | 47       : ld   b,a
            3053 | 28 EE    : jr   z,$3043
            3055 | FE 08    : cp   $08
            3057 | 20 01    : jr   nz,$305A
            3059 | 35       : dec  (hl)      // decrease code -01
            305A | FE 02    : cp   $02
            305C | 20 01    : jr   nz,$305F
            305E | 34       : inc  (hl)      // increase code +01
            305F | FE 80    : cp   $80
            3061 | 20 04    : jr   nz,$3067
            3063 | 3E F0    : ld   a,$F0     // decrease code -10
            3065 | 18 06    : jr   $306D
            3067 | FE 20    : cp   $20
            3069 | 20 05    : jr   nz,$3070
            306B | 3E 10    : ld   a,$10     // increase code +10
            306D | 86       : add  a,(hl)
            306E | 77       : ld   (hl),a
            306F | 78       : ld   a,b
            3070 | FE 01    : cp   $01
            3072 | 20 09    : jr   nz,$307D
            3074 | 7E       : ld   a,(hl)    // play sound
            3075 | 21 A0 9A : ld   hl,$9AA0
            3078 | 85       : add  a,l
            3079 | 6F       : ld   l,a
            307A | 36 01    : ld   (hl),$01
            307C | 78       : ld   a,b
            307D | FE 04    : cp   $04
            307F | 20 05    : jr   nz,$3086
            3081 | C5       : push bc        // stop sound
            3082 | CD 66 2D : call $2D66
            3085 | C1       : pop  bc
            3086 | 18 B8    : jr   $3040
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@2B98 = FA20            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3040 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3048 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3050 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3058 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3060 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3068 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3070 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3078 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3080 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

</mamecheat>
nebulbee.xml

Code: Select all

<!-- Nebulous Bee -->
<mamecheat version="1">

    <cheat desc="no hit">
        <script state="on">
            <action>sub.mb@06E4 = 18</action>
        </script>
        <script state="off">
            <action>sub.mb@06E4 = 30</action>
        </script>
    </cheat>

    <cheat desc="rapid fire">
        <script state="on">
            <action>maincpu.mb@1F0D = 6E</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1F0D = 66</action>
        </script>
    </cheat>

    <cheat desc="player speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x02">02       </item>
            <item value="0x04">03       </item>
            <item value="0x06">04       </item>
            <item value="0x08">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>maincpu.mb@1FA6 = param</action>
        </script>
        <script state="off">
            <action>maincpu.mb@1FA6 = 01</action>
        </script>
    </cheat>

    <cheat desc="bullet speed">
        <parameter>
            <item value="0x01">01 (slow)</item>
            <item value="0x06">02       </item>
            <item value="0x0c">03       </item>
            <item value="0x12">04       </item>
            <item value="0x18">05 (fast)</item>
        </parameter>
        <script state="change">
            <action>sub.mb@070D = param</action> <!-- speed -->
            <action>sub.mb@078B = param</action> <!-- collision range -->
        </script>
        <script state="off">
            <action>sub.mb@070D = 06</action>
            <action>sub.mb@078B = 06</action>
        </script>
    </cheat>

    <cheat desc="sound test mode">
        <!-- valid sound code seems to be from 0x01 to 0x16 -->
        <comment>set &quot;skip ram/rom check&quot; then reset the game (F3)</comment>
        <script state="on">
            <action>maincpu.mw@3719 = 4418            </action> <!-- disble device check -->
            <action>maincpu.md@0338 = 363BA0CD        </action>
            <action>maincpu.mq@3BA0 = E62F99B53A910021</action>
            <action>maincpu.mq@3BA8 = AAE62F99B63A4F05</action>
            <action>maincpu.mq@3BB0 = 2008FEEE2847B8B1</action>
            <action>maincpu.mq@3BB8 = FE34012002FE3501</action>
            <action>maincpu.mq@3BC0 = FE0618F03E042080</action>
            <action>maincpu.mq@3BC8 = 787786103E052020</action>
            <action>maincpu.mq@3BD0 = 9AA0217E092001FE</action>
            <action>maincpu.mq@3BD8 = 2004FE7801366F85</action>
            <action>maincpu.mq@3BE0 = B818C13A3CCDC505</action>
            <!--
            3BA0 | 21 00 91 : ld   hl,$9100  // sound code address
            3BA3 | 3A B5 99 : ld   a,($99B5) // read buttons
            3BA6 | 2F       : cpl
            3BA7 | E6 05    : and  $05
            3BA9 | 4F       : ld   c,a
            3BAA | 3A B6 99 : ld   a,($99B6) // read joysticks
            3BAD | 2F       : cpl
            3BAE | E6 AA    : and  $AA
            3BB0 | B1       : or   c
            3BB1 | B8       : cp   b
            3BB2 | 47       : ld   b,a
            3BB3 | 28 EE    : jr   z,$3BA3
            3BB5 | FE 08    : cp   $08
            3BB7 | 20 01    : jr   nz,$3BBA
            3BB9 | 35       : dec  (hl)      // decrease code -01
            3BBA | FE 02    : cp   $02
            3BBC | 20 01    : jr   nz,$3BBF
            3BBE | 34       : inc  (hl)      // increase code +01
            3BBF | FE 80    : cp   $80
            3BC1 | 20 04    : jr   nz,$3BC7
            3BC3 | 3E F0    : ld   a,$F0     // decrease code -10
            3BC5 | 18 06    : jr   $3BCD
            3BC7 | FE 20    : cp   $20
            3BC9 | 20 05    : jr   nz,$3BD0
            3BCB | 3E 10    : ld   a,$10     // increase code +10
            3BCD | 86       : add  a,(hl)
            3BCE | 77       : ld   (hl),a
            3BCF | 78       : ld   a,b
            3BD0 | FE 01    : cp   $01
            3BD2 | 20 09    : jr   nz,$3BDD
            3BD4 | 7E       : ld   a,(hl)    // play sound
            3BD5 | 21 A0 9A : ld   hl,$9AA0
            3BD8 | 85       : add  a,l
            3BD9 | 6F       : ld   l,a
            3BDA | 36 01    : ld   (hl),$01
            3BDC | 78       : ld   a,b
            3BDD | FE 04    : cp   $04
            3BDF | 20 05    : jr   nz,$3BE6
            3BE1 | C5       : push bc        // stop sound
            3BE2 | CD 3C 3A : call $3A3C
            3BE5 | C1       : pop  bc
            3BE6 | 18 B8    : jr   $3BA0
            -->
            <action>51xx:mcu.mb@00A3 = A4</action> <!-- enable input check -->
        </script>
        <script state="run">
            <output format="----- sound test mode -----"       line="10" align="center" />
            <output format="1P left : decrease code -01"       line="11" align="center" />
            <output format="1P right : increase code +01"      line="12" align="center" />
            <output format="2P left : decrease code -10"       line="13" align="center" />
            <output format="2P right : increase code +10"      line="14" align="center" />
            <output format="button 1 : play sound"             line="15" align="center" />
            <output format="start : stop sound"                line="16" align="center" />
            <output format="----------------------------"      line="17" align="center" />
            <output format="&lt;&lt; sound code %02X &gt;&gt;" line="19" align="center">
                <argument>maincpu.pb@9100</argument>
            </output>
        </script>
        <script state="off">
            <action> maincpu.mw@3719 = FA30            </action>
            <action> maincpu.md@0338 = 36A00521        </action>
            <action> maincpu.mq@3BA0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BA8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BB8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BC8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD0 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BD8 = FFFFFFFFFFFFFFFF</action>
            <action> maincpu.mq@3BE0 = FFFFFFFFFFFFFFFF</action>
            <action>51xx:mcu.mb@00A3 = BE              </action>
        </script>
    </cheat>

    <cheat desc="skip ram/rom check">
        <script state="on">
            <!-- ram -->
            <action>maincpu.md@3375 = 063435C3</action>
            <action>maincpu.mb@3484 = C9      </action>
            <!-- roms -->
            <action>maincpu.mb@3521 = C9      </action>
            <action>    sub.md@0583 = 0E183DAF</action> <!-- xor a / dec a / jr $0595 -->
            <action>   sub2.md@007F = 0E183DAF</action> <!-- xor a / dec a / jr $0091 -->
        </script>
        <script state="off">
            <action>maincpu.md@3375 = 06683032</action>
            <action>maincpu.mb@3484 = C5      </action>
            <action>maincpu.mb@3521 = E5      </action>
            <action>    sub.md@0583 = 10016F67</action>
            <action>   sub2.md@007F = 10016F67</action>
        </script>
    </cheat>

</mamecheat>
  • "player speed" : Converted parameter from value to item.
  • "sound test mode" : Added new. gallag and nebulbee doesn't emulate explosion sound (sound code 0x19).
  • "skip ram/rom check" : Removed from gatsbee. This set doesn't seem to check ram/rom.
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