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18 lines
293 B
ArmAsm
18 lines
293 B
ArmAsm
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.export ascii_to_native
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.export native_to_ascii
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;given an A2 Screen Code char in A, return equivalent ASCII
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native_to_ascii:
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;just strip high bit
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and #$7f
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rts
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;given an ASCII char in A, return equivalent A2 Screen Code
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ascii_to_native:
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;set high bit
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ora #$80
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rts
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