Emulator Cheats

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<cheat desc="no hit">
    <script state="on">
        <action>maincpu.mb@9623 =   00</action> <!-- bullet -->
        <action>maincpu.mw@b7ab = 0590</action> <!-- enemy -->
    </script>
    <script state="off">
        <action>maincpu.mb@9623 =   2e</action>
        <action>maincpu.mw@b7ab = 86e6</action>
    </script>
</cheat>

<cheat desc="auto fire">
    <script state="on">
        <action>maincpu.md@921d =         08688020</action>
        <action>maincpu.mq@6880 = 1d8500a904f00429</action>
        <action>maincpu.mq@6888 = 000000604a4a4a8a</action>
        <!--
        6880 | 29 04 : and #$04
        6882 | f0 04 : beq $6888
        6884 | a9 00 : lda #$00
        6886 | 85 1d : sta $1d
        6888 | 8a    : txa
        6889 | 4a    : lsr a
        688a | 4a    : lsr a
        688b | 4a    : lsr a
        688c | 60    : rts
        -->
    </script>
    <script state="off">
        <action>maincpu.md@921d =         084a4a4a</action>
        <action>maincpu.mq@6880 = 0000000000000000</action>
        <action>maincpu.mq@6888 = 0000000000000000</action>
    </script>
</cheat>

<cheat desc="player speed">
    <parameter min="0x01" max="0x05" step="0x01" />
    <script state="on">
        <action>maincpu.mw@944a =             688f</action>
        <action>maincpu.mw@944c =             689c</action>
        <action>maincpu.mq@6890 = aa68bd02204800a9</action>
        <action>maincpu.mq@6898 = 4800a960f6d08aca</action>
        <action>maincpu.mq@68a0 = d08acaaa68982120</action>
        <action>maincpu.mq@68a8 = 00000000000060f6</action>
        <!--
        6890 | a9 xx    : lda #$xx
        6892 | 48       : pha
        6893 | 20 02 bd : jsr $bd02
        6896 | 68       : pla
        6897 | aa       : tax
        6898 | ca       : dex
        6899 | 8a       : txa
        689a | d0 f6    : bne $6892
        689c | 60       : rts
        689d | a9 xx    : lda #$xx
        689f | 48       : pha
        68a0 | 20 21 98 : jsr $9821
        68a3 | 68       : pla
        68a4 | aa       : tax
        68a5 | ca       : dex
        68a6 | 8a       : txa
        68a7 | d0 f6    : bne $689f
        68a9 | 60       : rts
        -->
    </script>
    <script state="change">
        <action>maincpu.mb@6891 = param</action>
        <action>maincpu.mb@689e = param</action>
    </script>
    <script state="off">
        <action>maincpu.mw@944a =             bd01</action>
        <action>maincpu.mw@944c =             9820</action>
        <action>maincpu.mq@6890 = 0000000000000000</action>
        <action>maincpu.mq@6898 = 0000000000000000</action>
        <action>maincpu.mq@68a0 = 0000000000000000</action>
        <action>maincpu.mq@68a8 = 0000000000000000</action>
    </script>
</cheat>

<cheat desc="bullet speed">
    <parameter min="0x01" max="0x05" step="0x01" />
    <script state="on">
        <action>maincpu.mw@9458 =             68af</action>
        <action>maincpu.mq@68b0 = b002c987a54800a9</action>
        <action>maincpu.mq@68b8 = 8acaaa6897b62003</action>
        <action>maincpu.mq@68c0 = 000000000060f0d0</action>
        <!--
        68b0 | a9 xx    : lda #$xx
        68b2 | 48       : pha
        68b3 | a5 87    : lda $87
        68b5 | c9 02    : cmp #$02
        68b7 | b0 03    : bcs $68bc
        68b9 | 20 b6 97 : jsr $97b6
        68bc | 68       : pla
        68bd | aa       : tax
        68be | ca       : dex
        68bf | 8a       : txa
        68c0 | d0 f0    : bne $68b2
        68c2 | 60       : rts
        -->
    </script>
    <script state="change">
        <action>maincpu.mb@68b1 = param</action>
    </script>
    <script state="off">
        <action>maincpu.mw@9458 =             97b5</action>
        <action>maincpu.mq@68b0 = 0000000000000000</action>
        <action>maincpu.mq@68b8 = 0000000000000000</action>
        <action>maincpu.mq@68c0 = 0000000000000000</action>
    </script>
</cheat>