[ddcrewj2] D. D. Crew

jman · Post by **jman** » Sat Apr 22, 2023 10:06 am

<cheat desc="no hit">
    <script state="run">
        <action>maincpu.ob@0bdce = 60</action> <!-- player vs player -->
        <action>maincpu.ob@157c8 = 60</action> <!-- machine gun (time over) -->
        <action>maincpu.ob@16490 = 60</action> <!-- normal attack -->
        <action>maincpu.ob@21b9a = 60</action> <!-- machine gun (boss 6) -->
        <action>maincpu.ob@2791c = 60</action> <!-- bazooka (boss 6) -->
        <action>maincpu.ob@27d2c = 60</action> <!-- drum (boss 5) -->
        <action>maincpu.ob@285d6 = 60</action> <!-- knife -->
        <action>maincpu.ob@28796 = 60</action> <!-- grenade -->
    </script>
    <script state="off">
        <action>maincpu.ob@0bdce = 6e</action>
        <action>maincpu.ob@157c8 = 66</action>
        <action>maincpu.ob@16490 = 6e</action>
        <action>maincpu.ob@21b9a = 66</action>
        <action>maincpu.ob@2791c = 6e</action>
        <action>maincpu.ob@27d2c = 6c</action>
        <action>maincpu.ob@285d6 = 6e</action>
        <action>maincpu.ob@28796 = 66</action>
    </script>
</cheat>

<cheat desc="auto fire">
    <script state="run">
        <action>maincpu.ob@864c = 60</action>
    </script>
    <script state="off">
        <action>maincpu.ob@864c = 67</action>
    </script>
</cheat>

<cheat desc="walk speed">
    <parameter>
        <item value="0x0080">01 (slow)</item>
        <item value="0x0180">02       </item>
        <item value="0x0300">03       </item>
        <item value="0x0480">04       </item>
        <item value="0x0600">05 (fast)</item>
    </parameter>
    <script state="run">
        <action>maincpu.ob@3e4e =     6e</action> <!-- patch at start point in stage 5 -->
        <action>maincpu.ow@86de =  param</action> <!-- right -->
        <action>maincpu.ow@8748 = -param</action> <!-- left -->
        <action>maincpu.ow@87c0 =  param</action> <!-- down -->
        <action>maincpu.ow@8816 = -param</action> <!-- up -->
    </script>
    <script state="off">
        <action>maincpu.ob@3e4e =   67</action>
        <action>maincpu.ow@86de = 0180</action>
        <action>maincpu.ow@8748 = fe80</action>
        <action>maincpu.ow@87c0 = 0100</action>
        <action>maincpu.ow@8816 = ff00</action>
    </script>
</cheat>

<cheat desc="action speed up">
    <script state="run">
        <action>maincpu.ob@aeef = 02</action>
    </script>
    <script state="off">
        <action>maincpu.ob@aeef = 1e</action>
    </script>
</cheat>

<cheat desc="1 hit kill">
    <script state="run">
        <action>maincpu.ob@16a1d = 02</action> <!-- normal scene -->
        <action>maincpu.ob@25387 = 02</action> <!-- bonus scene -->
    </script>
    <script state="off">
        <action>maincpu.ob@16a1d = 2c</action>
        <action>maincpu.ob@25387 = 0c</action>
    </script>
</cheat>

<cheat desc="selectable same character">
    <script state="run">
        <!-- character selection screen -->
        <action>maincpu.ob@53bf = 08</action>
        <action>maincpu.ob@5403 = 08</action>
        <!-- join -->
        <action>maincpu.ob@78ff = 08</action>
        <action>maincpu.ob@7943 = 08</action>
    </script>
    <script state="off">
        <action>maincpu.ob@53bf = e0</action>
        <action>maincpu.ob@5403 = e0</action>
        <action>maincpu.ob@78ff = e0</action>
        <action>maincpu.ob@7943 = e0</action>
    </script>
</cheat>

<cheat desc="sound test mode">
    <comment>reset the game (F3) to enter sound test mode</comment>
    <script state="run">
        <!-- routine -->
        <action>maincpu.oq@0070a = 4ef9000330704e71</action>
        <action>maincpu.oq@33070 = 41f8900043f900fe</action>
        <action>maincpu.oq@33078 = 00071200103900e4</action>
        <action>maincpu.oq@33080 = 0001b20067f40c00</action>
        <action>maincpu.oq@33088 = 007f660253100c00</action>
        <action>maincpu.oq@33090 = 00bf660252100c00</action>
        <action>maincpu.oq@33098 = 00ef660404100010</action>
        <action>maincpu.oq@330a0 = 0c0000df66040610</action>
        <action>maincpu.oq@330a8 = 00100c0000fe6608</action>
        <action>maincpu.oq@330b0 = 1410000200801282</action>
        <action>maincpu.oq@330b8 = 0c0000fd66024211</action>
        <action>maincpu.oq@330c0 = 60b8ffffffffffff</action>
        <!--
        33070 | 41f8 9000      : lea    $9000.w,A0   // sound code address ($ff9000)
        33074 | 43f9 00fe 0007 : lea    $fe0007.l,A1 // sound latch address
        3307a | 1200           : move.b D0,D1
        3307c | 1039 00e4 0001 : move.b $e40001.l,D0 // read input
        33082 | b200           : cmp.b  D0,D1
        33084 | 67f4           : beq    $3307a
        33086 | 0c00 007f      : cmpi.b #$7f,D0
        3308a | 6602           : bne    $3308e
        3308c | 5310           : subq.b #1,(A0)      // decrease code -01
        3308e | 0c00 00bf      : cmpi.b #-$41,D0
        33092 | 6602           : bne    $33096
        33094 | 5210           : addq.b #1,(A0)      // increase code +01
        33096 | 0c00 00ef      : cmpi.b #-$11,D0
        3309a | 6604           : bne    $330a0
        3309c | 0410 0010      : subi.b #$10,(A0)    // decrease code -10
        330a0 | 0c00 00df      : cmpi.b #-$21,D0
        330a4 | 6604           : bne    $330aa
        330a6 | 0610 0010      : addi.b #$10,(A0)    // increase code +10
        330aa | 0c00 00fe      : cmpi.b #-$2,D0
        330ae | 6608           : bne    $330b8
        330b0 | 1410           : move.b (A0),D2      // play sound
        330b2 | 0002 0080      : ori.b  #$80,D2
        330b6 | 1282           : move.b D2,(A1)
        330b8 | 0c00 00fd      : cmpi.b #-$3,D0
        330bc | 6602           : bne    $330c0
        330be | 4211           : clr.b  (A1)         // stop sound
        330c0 | 60b8           : bra    $3307a
        -->
        <!-- display -->
        <output format="----- d.d. crew sound test mode -----" line="10" align="center" />
        <output format="left : decrease code -01"              line="11" align="center" />
        <output format="right : increase code +01"             line="12" align="center" />
        <output format="up : increase code +10"                line="13" align="center" />
        <output format="down : decrease code -10"              line="14" align="center" />
        <output format="button 1 : play sound"                 line="15" align="center" />
        <output format="button 2 : stop sound"                 line="16" align="center" />
        <output format="----------------------------"          line="17" align="center" />
        <output format="&lt;&lt; sound code %2.2X &gt;&gt;"    line="19" align="center"  >
            <argument>maincpu.pb@ff9000</argument>
        </output>
    </script>
    <script state="off">
        <action>maincpu.oq@0070a = 610001a0610005c6</action>
        <action>maincpu.oq@33070 = ad20a482ad80a422</action>
        <action>maincpu.oq@33078 = ad20a590a482ad20</action>
        <action>maincpu.oq@33080 = a482a590a482a590</action>
        <action>maincpu.oq@33088 = a422ad20a422a482</action>
        <action>maincpu.oq@33090 = ad20a422ad20a482</action>
        <action>maincpu.oq@33098 = a422a422a482a482</action>
        <action>maincpu.oq@330a0 = a5a0a422ad20a5a0</action>
        <action>maincpu.oq@330a8 = ad20a482ad20ad20</action>
        <action>maincpu.oq@330b0 = ad80a5a0a422a5a0</action>
        <action>maincpu.oq@330b8 = a482a5a0a422a422</action>
        <action>maincpu.oq@330c0 = a422ad20a422a482</action>
    </script>
</cheat>

"selectable same character" is unique. Normally, this game doesn't allow you to select the same character. This code breaks that rule.

Code: Select all

<cheat desc="infinite time">
    <script state="run">
        <action>maincpu.pw@ffcc18 = 0000</action>
    </script>
</cheat>

<cheat desc="time over now">
    <script state="on">
        <action>maincpu.pw@ffcc18 = 0708</action>
    </script>
</cheat>

This game has the timer (2 bytes. not decrease but increase). Boss character who has the machine gun appears soon (and kills you) when you set "time over now" code.