29 lines
568 B
ArmAsm
29 lines
568 B
ArmAsm
;
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; Oliver Schmidt, 2024-08-06
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;
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; unsigned char __fastcall__ allow_lowercase (unsigned char onoff);
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;
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.ifndef __APPLE2ENH__
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.export _allow_lowercase
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.import return0
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.import uppercasemask, return1
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_allow_lowercase:
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tax
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lda values,x
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ldx uppercasemask
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sta uppercasemask
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cpx #$FF
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beq :+
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jmp return0
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: jmp return1
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.rodata
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values: .byte $DF ; Force uppercase
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.byte $FF ; Keep lowercase
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.endif
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