(snake.rom) Minor optimizations
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@ -7,12 +7,12 @@
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%2/ { #01 SFT } %2* { #10 SFT }
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%8// { #03 SFT2 } %8** { #30 SFT2 }
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%MOD { DIVk MUL SUB }
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%MAX { LTHk JMP SWP POP }
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%RTN { JMP2r }
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%TOS { #00 SWP }
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%SWP? { #01 JCN SWP }
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%RTN? { #01 JCN RTN }
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%BRK? { #01 JCN BRK }
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%DIFFICULTY { #06 }
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( devices )
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@ -117,12 +117,12 @@ RTN
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POP2
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POP2r
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.snake/dead LDZ #00 = RTN?
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.snake/dead LDZ #00 = JMP RTN
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.snake/direction LDZ
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DUP #01 ! ,&no-up JCN
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.snake/y LDZ #01 -
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.arena/h LDZ LTHk SWP? POP
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.arena/h LDZ MAX
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.snake/y STZ
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&no-up
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DUP #02 ! ,&no-down JCN
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@ -132,7 +132,7 @@ RTN
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&no-down
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DUP #04 ! ,&no-left JCN
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.snake/x LDZ #01 -
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.arena/w LDZ LTHk SWP? POP
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.arena/w LDZ MAX
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.snake/x STZ
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&no-left
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DUP #08 ! ,&no-right JCN
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@ -160,7 +160,6 @@ RTN
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INC GTHk ,&loop-body JCN
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POP2
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RTN
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@add-apple ( -- )
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