small 65C02 optimizations in many places
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@@ -6,15 +6,8 @@ default_nmi_handler:
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// Save registers, sequence according to Compute's Mapping the Commodore 64, page 73
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pha
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#if CONFIG_CPU_MOS_6502
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txa
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pha
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tya
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pha
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#else
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phx
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phy
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#endif
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_phx
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_phy
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// XXX: RS-232 support is not implemented
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