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25 lines
526 B
ArmAsm
25 lines
526 B
ArmAsm
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; Colin Leroy-Mira, 2024
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; Helper to check for file opened, not eof, not ferror
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; Expects file pointer in ptr1,
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; Returns with Z flag set if everything is OK,
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; Destroys A, X, Y,
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; Sets file flags in A
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;
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.export checkferror
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.importzp ptr1
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.include "_file.inc"
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checkferror:
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ldy #_FILE::f_flags
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lda (ptr1),y
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tax
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and #(_FOPEN|_FERROR|_FEOF); Check for file open, error/eof
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tay
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txa
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cpy #_FOPEN
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rts
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